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<a class="variable" href="#FINAL">FINAL</a>
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</li>
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<li>
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<a class="function" href="#simplify_not">simplify_not</a>
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</li>
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<li>
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<a class="function" href="#flatten">flatten</a>
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</li>
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<li>
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<a class="function" href="#simplify_connectors">simplify_connectors</a>
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</li>
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<a class="variable" href="#LT_LTE">LT_LTE</a>
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<a class="variable" href="#GT_GTE">GT_GTE</a>
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<a class="variable" href="#COMPARISONS">COMPARISONS</a>
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<a class="variable" href="#INVERSE_COMPARISONS">INVERSE_COMPARISONS</a>
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<li>
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<a class="function" href="#remove_compliments">remove_compliments</a>
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<li>
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<a class="function" href="#uniq_sort">uniq_sort</a>
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<li>
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<a class="function" href="#absorb_and_eliminate">absorb_and_eliminate</a>
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</li>
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<li>
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<a class="variable" href="#INVERSE_DATE_OPS">INVERSE_DATE_OPS</a>
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</li>
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<li>
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<a class="variable" href="#INVERSE_OPS">INVERSE_OPS</a>
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</li>
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<li>
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<a class="function" href="#simplify_equality">simplify_equality</a>
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</li>
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<li>
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<a class="function" href="#simplify_literals">simplify_literals</a>
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</li>
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<li>
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<a class="function" href="#simplify_parens">simplify_parens</a>
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</li>
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<li>
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<a class="variable" href="#CONSTANTS">CONSTANTS</a>
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</li>
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<li>
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<a class="function" href="#simplify_coalesce">simplify_coalesce</a>
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</li>
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<li>
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<a class="variable" href="#CONCATS">CONCATS</a>
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</li>
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<li>
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<a class="variable" href="#SAFE_CONCATS">SAFE_CONCATS</a>
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</li>
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<li>
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<a class="function" href="#simplify_concat">simplify_concat</a>
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</li>
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<li>
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<a class="variable" href="#DateRange">DateRange</a>
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</li>
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<li>
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<a class="variable" href="#DateTruncBinaryTransform">DateTruncBinaryTransform</a>
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</li>
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<li>
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<a class="variable" href="#DATETRUNC_BINARY_COMPARISONS">DATETRUNC_BINARY_COMPARISONS</a>
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</li>
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<li>
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<a class="variable" href="#DATETRUNC_COMPARISONS">DATETRUNC_COMPARISONS</a>
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</li>
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<li>
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<a class="function" href="#simplify_datetrunc_predicate">simplify_datetrunc_predicate</a>
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</li>
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<li>
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<a class="variable" href="#JOINS">JOINS</a>
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</li>
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<li>
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<a class="function" href="#remove_where_true">remove_where_true</a>
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</li>
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<li>
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<a class="function" href="#always_true">always_true</a>
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</li>
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<li>
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<a class="function" href="#is_complement">is_complement</a>
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</li>
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<li>
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<a class="function" href="#is_false">is_false</a>
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</li>
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<li>
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<a class="function" href="#is_null">is_null</a>
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</li>
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<li>
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<a class="function" href="#eval_boolean">eval_boolean</a>
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</li>
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<li>
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<a class="function" href="#cast_as_date">cast_as_date</a>
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</li>
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<li>
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<a class="function" href="#cast_as_datetime">cast_as_datetime</a>
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</li>
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<li>
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<a class="function" href="#cast_value">cast_value</a>
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</li>
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<li>
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<a class="function" href="#extract_date">extract_date</a>
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</li>
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<li>
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<a class="function" href="#extract_interval">extract_interval</a>
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</li>
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<li>
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<a class="function" href="#date_literal">date_literal</a>
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</li>
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<li>
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<a class="function" href="#interval">interval</a>
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</li>
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<li>
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<a class="function" href="#date_floor">date_floor</a>
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</li>
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<li>
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<a class="function" href="#date_ceil">date_ceil</a>
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</li>
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<li>
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<a class="function" href="#boolean_literal">boolean_literal</a>
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</li>
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</ul>
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<section class="module-info">
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<a class="pdoc-button git-button" href="https://github.com/tobymao/sqlglot/tree/main/sqlglot/optimizer/simplify.py">Edit on GitHub</a>
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<h1 class="modulename">
|
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<a href="./../../sqlglot.html">sqlglot</a><wbr>.<a href="./../optimizer.html">optimizer</a><wbr>.simplify </h1>
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<input id="mod-simplify-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1">
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<div class="pdoc-code codehilite"><pre><span></span><span id="L-1"><a href="#L-1"><span class="linenos"> 1</span></a><span class="kn">import</span> <span class="nn">datetime</span>
|
|
</span><span id="L-2"><a href="#L-2"><span class="linenos"> 2</span></a><span class="kn">import</span> <span class="nn">functools</span>
|
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</span><span id="L-3"><a href="#L-3"><span class="linenos"> 3</span></a><span class="kn">import</span> <span class="nn">itertools</span>
|
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</span><span id="L-4"><a href="#L-4"><span class="linenos"> 4</span></a><span class="kn">import</span> <span class="nn">typing</span> <span class="k">as</span> <span class="nn">t</span>
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</span><span id="L-5"><a href="#L-5"><span class="linenos"> 5</span></a><span class="kn">from</span> <span class="nn">collections</span> <span class="kn">import</span> <span class="n">deque</span>
|
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</span><span id="L-6"><a href="#L-6"><span class="linenos"> 6</span></a><span class="kn">from</span> <span class="nn">decimal</span> <span class="kn">import</span> <span class="n">Decimal</span>
|
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</span><span id="L-7"><a href="#L-7"><span class="linenos"> 7</span></a>
|
|
</span><span id="L-8"><a href="#L-8"><span class="linenos"> 8</span></a><span class="kn">from</span> <span class="nn">sqlglot</span> <span class="kn">import</span> <span class="n">exp</span>
|
|
</span><span id="L-9"><a href="#L-9"><span class="linenos"> 9</span></a><span class="kn">from</span> <span class="nn">sqlglot.generator</span> <span class="kn">import</span> <span class="n">cached_generator</span>
|
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</span><span id="L-10"><a href="#L-10"><span class="linenos"> 10</span></a><span class="kn">from</span> <span class="nn">sqlglot.helper</span> <span class="kn">import</span> <span class="n">first</span><span class="p">,</span> <span class="n">merge_ranges</span><span class="p">,</span> <span class="n">while_changing</span>
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</span><span id="L-11"><a href="#L-11"><span class="linenos"> 11</span></a>
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</span><span id="L-12"><a href="#L-12"><span class="linenos"> 12</span></a><span class="c1"># Final means that an expression should not be simplified</span>
|
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</span><span id="L-13"><a href="#L-13"><span class="linenos"> 13</span></a><span class="n">FINAL</span> <span class="o">=</span> <span class="s2">"final"</span>
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</span><span id="L-14"><a href="#L-14"><span class="linenos"> 14</span></a>
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</span><span id="L-15"><a href="#L-15"><span class="linenos"> 15</span></a>
|
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</span><span id="L-16"><a href="#L-16"><span class="linenos"> 16</span></a><span class="k">class</span> <span class="nc">UnsupportedUnit</span><span class="p">(</span><span class="ne">Exception</span><span class="p">):</span>
|
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</span><span id="L-17"><a href="#L-17"><span class="linenos"> 17</span></a> <span class="k">pass</span>
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</span><span id="L-18"><a href="#L-18"><span class="linenos"> 18</span></a>
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</span><span id="L-19"><a href="#L-19"><span class="linenos"> 19</span></a>
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</span><span id="L-20"><a href="#L-20"><span class="linenos"> 20</span></a><span class="k">def</span> <span class="nf">simplify</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span>
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</span><span id="L-21"><a href="#L-21"><span class="linenos"> 21</span></a><span class="w"> </span><span class="sd">"""</span>
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</span><span id="L-22"><a href="#L-22"><span class="linenos"> 22</span></a><span class="sd"> Rewrite sqlglot AST to simplify expressions.</span>
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</span><span id="L-23"><a href="#L-23"><span class="linenos"> 23</span></a>
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</span><span id="L-24"><a href="#L-24"><span class="linenos"> 24</span></a><span class="sd"> Example:</span>
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</span><span id="L-25"><a href="#L-25"><span class="linenos"> 25</span></a><span class="sd"> >>> import sqlglot</span>
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</span><span id="L-26"><a href="#L-26"><span class="linenos"> 26</span></a><span class="sd"> >>> expression = sqlglot.parse_one("TRUE AND TRUE")</span>
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</span><span id="L-27"><a href="#L-27"><span class="linenos"> 27</span></a><span class="sd"> >>> simplify(expression).sql()</span>
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</span><span id="L-28"><a href="#L-28"><span class="linenos"> 28</span></a><span class="sd"> 'TRUE'</span>
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</span><span id="L-29"><a href="#L-29"><span class="linenos"> 29</span></a>
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</span><span id="L-30"><a href="#L-30"><span class="linenos"> 30</span></a><span class="sd"> Args:</span>
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</span><span id="L-31"><a href="#L-31"><span class="linenos"> 31</span></a><span class="sd"> expression (sqlglot.Expression): expression to simplify</span>
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</span><span id="L-32"><a href="#L-32"><span class="linenos"> 32</span></a><span class="sd"> Returns:</span>
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</span><span id="L-33"><a href="#L-33"><span class="linenos"> 33</span></a><span class="sd"> sqlglot.Expression: simplified expression</span>
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</span><span id="L-34"><a href="#L-34"><span class="linenos"> 34</span></a><span class="sd"> """</span>
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</span><span id="L-35"><a href="#L-35"><span class="linenos"> 35</span></a>
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</span><span id="L-36"><a href="#L-36"><span class="linenos"> 36</span></a> <span class="n">generate</span> <span class="o">=</span> <span class="n">cached_generator</span><span class="p">()</span>
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</span><span id="L-37"><a href="#L-37"><span class="linenos"> 37</span></a>
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</span><span id="L-38"><a href="#L-38"><span class="linenos"> 38</span></a> <span class="c1"># group by expressions cannot be simplified, for example</span>
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</span><span id="L-39"><a href="#L-39"><span class="linenos"> 39</span></a> <span class="c1"># select x + 1 + 1 FROM y GROUP BY x + 1 + 1</span>
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</span><span id="L-40"><a href="#L-40"><span class="linenos"> 40</span></a> <span class="c1"># the projection must exactly match the group by key</span>
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</span><span id="L-41"><a href="#L-41"><span class="linenos"> 41</span></a> <span class="k">for</span> <span class="n">group</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Group</span><span class="p">):</span>
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</span><span id="L-42"><a href="#L-42"><span class="linenos"> 42</span></a> <span class="n">select</span> <span class="o">=</span> <span class="n">group</span><span class="o">.</span><span class="n">parent</span>
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</span><span id="L-43"><a href="#L-43"><span class="linenos"> 43</span></a> <span class="n">groups</span> <span class="o">=</span> <span class="nb">set</span><span class="p">(</span><span class="n">group</span><span class="o">.</span><span class="n">expressions</span><span class="p">)</span>
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</span><span id="L-44"><a href="#L-44"><span class="linenos"> 44</span></a> <span class="n">group</span><span class="o">.</span><span class="n">meta</span><span class="p">[</span><span class="n">FINAL</span><span class="p">]</span> <span class="o">=</span> <span class="kc">True</span>
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</span><span id="L-45"><a href="#L-45"><span class="linenos"> 45</span></a>
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</span><span id="L-46"><a href="#L-46"><span class="linenos"> 46</span></a> <span class="k">for</span> <span class="n">e</span> <span class="ow">in</span> <span class="n">select</span><span class="o">.</span><span class="n">selects</span><span class="p">:</span>
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</span><span id="L-47"><a href="#L-47"><span class="linenos"> 47</span></a> <span class="k">for</span> <span class="n">node</span><span class="p">,</span> <span class="o">*</span><span class="n">_</span> <span class="ow">in</span> <span class="n">e</span><span class="o">.</span><span class="n">walk</span><span class="p">():</span>
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</span><span id="L-48"><a href="#L-48"><span class="linenos"> 48</span></a> <span class="k">if</span> <span class="n">node</span> <span class="ow">in</span> <span class="n">groups</span><span class="p">:</span>
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</span><span id="L-49"><a href="#L-49"><span class="linenos"> 49</span></a> <span class="n">e</span><span class="o">.</span><span class="n">meta</span><span class="p">[</span><span class="n">FINAL</span><span class="p">]</span> <span class="o">=</span> <span class="kc">True</span>
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</span><span id="L-50"><a href="#L-50"><span class="linenos"> 50</span></a> <span class="k">break</span>
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</span><span id="L-51"><a href="#L-51"><span class="linenos"> 51</span></a>
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</span><span id="L-52"><a href="#L-52"><span class="linenos"> 52</span></a> <span class="n">having</span> <span class="o">=</span> <span class="n">select</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"having"</span><span class="p">)</span>
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</span><span id="L-53"><a href="#L-53"><span class="linenos"> 53</span></a> <span class="k">if</span> <span class="n">having</span><span class="p">:</span>
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</span><span id="L-54"><a href="#L-54"><span class="linenos"> 54</span></a> <span class="k">for</span> <span class="n">node</span><span class="p">,</span> <span class="o">*</span><span class="n">_</span> <span class="ow">in</span> <span class="n">having</span><span class="o">.</span><span class="n">walk</span><span class="p">():</span>
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</span><span id="L-55"><a href="#L-55"><span class="linenos"> 55</span></a> <span class="k">if</span> <span class="n">node</span> <span class="ow">in</span> <span class="n">groups</span><span class="p">:</span>
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</span><span id="L-56"><a href="#L-56"><span class="linenos"> 56</span></a> <span class="n">having</span><span class="o">.</span><span class="n">meta</span><span class="p">[</span><span class="n">FINAL</span><span class="p">]</span> <span class="o">=</span> <span class="kc">True</span>
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</span><span id="L-57"><a href="#L-57"><span class="linenos"> 57</span></a> <span class="k">break</span>
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</span><span id="L-58"><a href="#L-58"><span class="linenos"> 58</span></a>
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</span><span id="L-59"><a href="#L-59"><span class="linenos"> 59</span></a> <span class="k">def</span> <span class="nf">_simplify</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">root</span><span class="o">=</span><span class="kc">True</span><span class="p">):</span>
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</span><span id="L-60"><a href="#L-60"><span class="linenos"> 60</span></a> <span class="k">if</span> <span class="n">expression</span><span class="o">.</span><span class="n">meta</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">FINAL</span><span class="p">):</span>
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</span><span id="L-61"><a href="#L-61"><span class="linenos"> 61</span></a> <span class="k">return</span> <span class="n">expression</span>
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</span><span id="L-62"><a href="#L-62"><span class="linenos"> 62</span></a>
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</span><span id="L-63"><a href="#L-63"><span class="linenos"> 63</span></a> <span class="c1"># Pre-order transformations</span>
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</span><span id="L-64"><a href="#L-64"><span class="linenos"> 64</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">expression</span>
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</span><span id="L-65"><a href="#L-65"><span class="linenos"> 65</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">rewrite_between</span><span class="p">(</span><span class="n">node</span><span class="p">)</span>
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</span><span id="L-66"><a href="#L-66"><span class="linenos"> 66</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">uniq_sort</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">generate</span><span class="p">,</span> <span class="n">root</span><span class="p">)</span>
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</span><span id="L-67"><a href="#L-67"><span class="linenos"> 67</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">absorb_and_eliminate</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">root</span><span class="p">)</span>
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</span><span id="L-68"><a href="#L-68"><span class="linenos"> 68</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">simplify_concat</span><span class="p">(</span><span class="n">node</span><span class="p">)</span>
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</span><span id="L-69"><a href="#L-69"><span class="linenos"> 69</span></a>
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</span><span id="L-70"><a href="#L-70"><span class="linenos"> 70</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">replace_children</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="k">lambda</span> <span class="n">e</span><span class="p">:</span> <span class="n">_simplify</span><span class="p">(</span><span class="n">e</span><span class="p">,</span> <span class="kc">False</span><span class="p">))</span>
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</span><span id="L-71"><a href="#L-71"><span class="linenos"> 71</span></a>
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</span><span id="L-72"><a href="#L-72"><span class="linenos"> 72</span></a> <span class="c1"># Post-order transformations</span>
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</span><span id="L-73"><a href="#L-73"><span class="linenos"> 73</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">simplify_not</span><span class="p">(</span><span class="n">node</span><span class="p">)</span>
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</span><span id="L-74"><a href="#L-74"><span class="linenos"> 74</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">flatten</span><span class="p">(</span><span class="n">node</span><span class="p">)</span>
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</span><span id="L-75"><a href="#L-75"><span class="linenos"> 75</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">simplify_connectors</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">root</span><span class="p">)</span>
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</span><span id="L-76"><a href="#L-76"><span class="linenos"> 76</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">remove_compliments</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">root</span><span class="p">)</span>
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</span><span id="L-77"><a href="#L-77"><span class="linenos"> 77</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">simplify_coalesce</span><span class="p">(</span><span class="n">node</span><span class="p">)</span>
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</span><span id="L-78"><a href="#L-78"><span class="linenos"> 78</span></a> <span class="n">node</span><span class="o">.</span><span class="n">parent</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">parent</span>
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</span><span id="L-79"><a href="#L-79"><span class="linenos"> 79</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">simplify_literals</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">root</span><span class="p">)</span>
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</span><span id="L-80"><a href="#L-80"><span class="linenos"> 80</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">simplify_equality</span><span class="p">(</span><span class="n">node</span><span class="p">)</span>
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</span><span id="L-81"><a href="#L-81"><span class="linenos"> 81</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">simplify_parens</span><span class="p">(</span><span class="n">node</span><span class="p">)</span>
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</span><span id="L-82"><a href="#L-82"><span class="linenos"> 82</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">simplify_datetrunc_predicate</span><span class="p">(</span><span class="n">node</span><span class="p">)</span>
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</span><span id="L-83"><a href="#L-83"><span class="linenos"> 83</span></a>
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</span><span id="L-84"><a href="#L-84"><span class="linenos"> 84</span></a> <span class="k">if</span> <span class="n">root</span><span class="p">:</span>
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</span><span id="L-85"><a href="#L-85"><span class="linenos"> 85</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">node</span><span class="p">)</span>
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</span><span id="L-86"><a href="#L-86"><span class="linenos"> 86</span></a>
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</span><span id="L-87"><a href="#L-87"><span class="linenos"> 87</span></a> <span class="k">return</span> <span class="n">node</span>
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</span><span id="L-88"><a href="#L-88"><span class="linenos"> 88</span></a>
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</span><span id="L-89"><a href="#L-89"><span class="linenos"> 89</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">while_changing</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">_simplify</span><span class="p">)</span>
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</span><span id="L-90"><a href="#L-90"><span class="linenos"> 90</span></a> <span class="n">remove_where_true</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span>
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</span><span id="L-91"><a href="#L-91"><span class="linenos"> 91</span></a> <span class="k">return</span> <span class="n">expression</span>
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</span><span id="L-92"><a href="#L-92"><span class="linenos"> 92</span></a>
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</span><span id="L-93"><a href="#L-93"><span class="linenos"> 93</span></a>
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</span><span id="L-94"><a href="#L-94"><span class="linenos"> 94</span></a><span class="k">def</span> <span class="nf">catch</span><span class="p">(</span><span class="o">*</span><span class="n">exceptions</span><span class="p">):</span>
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</span><span id="L-95"><a href="#L-95"><span class="linenos"> 95</span></a><span class="w"> </span><span class="sd">"""Decorator that ignores a simplification function if any of `exceptions` are raised"""</span>
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</span><span id="L-96"><a href="#L-96"><span class="linenos"> 96</span></a>
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</span><span id="L-97"><a href="#L-97"><span class="linenos"> 97</span></a> <span class="k">def</span> <span class="nf">decorator</span><span class="p">(</span><span class="n">func</span><span class="p">):</span>
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</span><span id="L-98"><a href="#L-98"><span class="linenos"> 98</span></a> <span class="k">def</span> <span class="nf">wrapped</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
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</span><span id="L-99"><a href="#L-99"><span class="linenos"> 99</span></a> <span class="k">try</span><span class="p">:</span>
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</span><span id="L-100"><a href="#L-100"><span class="linenos">100</span></a> <span class="k">return</span> <span class="n">func</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span>
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</span><span id="L-101"><a href="#L-101"><span class="linenos">101</span></a> <span class="k">except</span> <span class="n">exceptions</span><span class="p">:</span>
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</span><span id="L-102"><a href="#L-102"><span class="linenos">102</span></a> <span class="k">return</span> <span class="n">expression</span>
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</span><span id="L-103"><a href="#L-103"><span class="linenos">103</span></a>
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</span><span id="L-104"><a href="#L-104"><span class="linenos">104</span></a> <span class="k">return</span> <span class="n">wrapped</span>
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</span><span id="L-105"><a href="#L-105"><span class="linenos">105</span></a>
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</span><span id="L-106"><a href="#L-106"><span class="linenos">106</span></a> <span class="k">return</span> <span class="n">decorator</span>
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</span><span id="L-107"><a href="#L-107"><span class="linenos">107</span></a>
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</span><span id="L-108"><a href="#L-108"><span class="linenos">108</span></a>
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</span><span id="L-109"><a href="#L-109"><span class="linenos">109</span></a><span class="k">def</span> <span class="nf">rewrite_between</span><span class="p">(</span><span class="n">expression</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">)</span> <span class="o">-></span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">:</span>
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</span><span id="L-110"><a href="#L-110"><span class="linenos">110</span></a><span class="w"> </span><span class="sd">"""Rewrite x between y and z to x >= y AND x <= z.</span>
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</span><span id="L-111"><a href="#L-111"><span class="linenos">111</span></a>
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</span><span id="L-112"><a href="#L-112"><span class="linenos">112</span></a><span class="sd"> This is done because comparison simplification is only done on lt/lte/gt/gte.</span>
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</span><span id="L-113"><a href="#L-113"><span class="linenos">113</span></a><span class="sd"> """</span>
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</span><span id="L-114"><a href="#L-114"><span class="linenos">114</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Between</span><span class="p">):</span>
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</span><span id="L-115"><a href="#L-115"><span class="linenos">115</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">and_</span><span class="p">(</span>
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</span><span id="L-116"><a href="#L-116"><span class="linenos">116</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">GTE</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">copy</span><span class="p">(),</span> <span class="n">expression</span><span class="o">=</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="p">[</span><span class="s2">"low"</span><span class="p">]),</span>
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</span><span id="L-117"><a href="#L-117"><span class="linenos">117</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">LTE</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">copy</span><span class="p">(),</span> <span class="n">expression</span><span class="o">=</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="p">[</span><span class="s2">"high"</span><span class="p">]),</span>
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</span><span id="L-118"><a href="#L-118"><span class="linenos">118</span></a> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span>
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</span><span id="L-119"><a href="#L-119"><span class="linenos">119</span></a> <span class="p">)</span>
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</span><span id="L-120"><a href="#L-120"><span class="linenos">120</span></a> <span class="k">return</span> <span class="n">expression</span>
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</span><span id="L-121"><a href="#L-121"><span class="linenos">121</span></a>
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</span><span id="L-122"><a href="#L-122"><span class="linenos">122</span></a>
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</span><span id="L-123"><a href="#L-123"><span class="linenos">123</span></a><span class="k">def</span> <span class="nf">simplify_not</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span>
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</span><span id="L-124"><a href="#L-124"><span class="linenos">124</span></a><span class="w"> </span><span class="sd">"""</span>
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</span><span id="L-125"><a href="#L-125"><span class="linenos">125</span></a><span class="sd"> Demorgan's Law</span>
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</span><span id="L-126"><a href="#L-126"><span class="linenos">126</span></a><span class="sd"> NOT (x OR y) -> NOT x AND NOT y</span>
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</span><span id="L-127"><a href="#L-127"><span class="linenos">127</span></a><span class="sd"> NOT (x AND y) -> NOT x OR NOT y</span>
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</span><span id="L-128"><a href="#L-128"><span class="linenos">128</span></a><span class="sd"> """</span>
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</span><span id="L-129"><a href="#L-129"><span class="linenos">129</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Not</span><span class="p">):</span>
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</span><span id="L-130"><a href="#L-130"><span class="linenos">130</span></a> <span class="k">if</span> <span class="n">is_null</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">):</span>
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</span><span id="L-131"><a href="#L-131"><span class="linenos">131</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">null</span><span class="p">()</span>
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</span><span id="L-132"><a href="#L-132"><span class="linenos">132</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Paren</span><span class="p">):</span>
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</span><span id="L-133"><a href="#L-133"><span class="linenos">133</span></a> <span class="n">condition</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">unnest</span><span class="p">()</span>
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</span><span id="L-134"><a href="#L-134"><span class="linenos">134</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">condition</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">):</span>
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</span><span id="L-135"><a href="#L-135"><span class="linenos">135</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">or_</span><span class="p">(</span>
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</span><span id="L-136"><a href="#L-136"><span class="linenos">136</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">not_</span><span class="p">(</span><span class="n">condition</span><span class="o">.</span><span class="n">left</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">),</span>
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</span><span id="L-137"><a href="#L-137"><span class="linenos">137</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">not_</span><span class="p">(</span><span class="n">condition</span><span class="o">.</span><span class="n">right</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">),</span>
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</span><span id="L-138"><a href="#L-138"><span class="linenos">138</span></a> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span>
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</span><span id="L-139"><a href="#L-139"><span class="linenos">139</span></a> <span class="p">)</span>
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</span><span id="L-140"><a href="#L-140"><span class="linenos">140</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">condition</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Or</span><span class="p">):</span>
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</span><span id="L-141"><a href="#L-141"><span class="linenos">141</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">and_</span><span class="p">(</span>
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</span><span id="L-142"><a href="#L-142"><span class="linenos">142</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">not_</span><span class="p">(</span><span class="n">condition</span><span class="o">.</span><span class="n">left</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">),</span>
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</span><span id="L-143"><a href="#L-143"><span class="linenos">143</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">not_</span><span class="p">(</span><span class="n">condition</span><span class="o">.</span><span class="n">right</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">),</span>
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</span><span id="L-144"><a href="#L-144"><span class="linenos">144</span></a> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span>
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</span><span id="L-145"><a href="#L-145"><span class="linenos">145</span></a> <span class="p">)</span>
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</span><span id="L-146"><a href="#L-146"><span class="linenos">146</span></a> <span class="k">if</span> <span class="n">is_null</span><span class="p">(</span><span class="n">condition</span><span class="p">):</span>
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</span><span id="L-147"><a href="#L-147"><span class="linenos">147</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">null</span><span class="p">()</span>
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</span><span id="L-148"><a href="#L-148"><span class="linenos">148</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">):</span>
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</span><span id="L-149"><a href="#L-149"><span class="linenos">149</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span>
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</span><span id="L-150"><a href="#L-150"><span class="linenos">150</span></a> <span class="k">if</span> <span class="n">is_false</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">):</span>
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</span><span id="L-151"><a href="#L-151"><span class="linenos">151</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span>
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</span><span id="L-152"><a href="#L-152"><span class="linenos">152</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Not</span><span class="p">):</span>
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</span><span id="L-153"><a href="#L-153"><span class="linenos">153</span></a> <span class="c1"># double negation</span>
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</span><span id="L-154"><a href="#L-154"><span class="linenos">154</span></a> <span class="c1"># NOT NOT x -> x</span>
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</span><span id="L-155"><a href="#L-155"><span class="linenos">155</span></a> <span class="k">return</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">this</span>
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</span><span id="L-156"><a href="#L-156"><span class="linenos">156</span></a> <span class="k">return</span> <span class="n">expression</span>
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</span><span id="L-157"><a href="#L-157"><span class="linenos">157</span></a>
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</span><span id="L-158"><a href="#L-158"><span class="linenos">158</span></a>
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</span><span id="L-159"><a href="#L-159"><span class="linenos">159</span></a><span class="k">def</span> <span class="nf">flatten</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span>
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</span><span id="L-160"><a href="#L-160"><span class="linenos">160</span></a><span class="w"> </span><span class="sd">"""</span>
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</span><span id="L-161"><a href="#L-161"><span class="linenos">161</span></a><span class="sd"> A AND (B AND C) -> A AND B AND C</span>
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</span><span id="L-162"><a href="#L-162"><span class="linenos">162</span></a><span class="sd"> A OR (B OR C) -> A OR B OR C</span>
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</span><span id="L-163"><a href="#L-163"><span class="linenos">163</span></a><span class="sd"> """</span>
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</span><span id="L-164"><a href="#L-164"><span class="linenos">164</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">):</span>
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</span><span id="L-165"><a href="#L-165"><span class="linenos">165</span></a> <span class="k">for</span> <span class="n">node</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">values</span><span class="p">():</span>
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</span><span id="L-166"><a href="#L-166"><span class="linenos">166</span></a> <span class="n">child</span> <span class="o">=</span> <span class="n">node</span><span class="o">.</span><span class="n">unnest</span><span class="p">()</span>
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</span><span id="L-167"><a href="#L-167"><span class="linenos">167</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">child</span><span class="p">,</span> <span class="n">expression</span><span class="o">.</span><span class="vm">__class__</span><span class="p">):</span>
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</span><span id="L-168"><a href="#L-168"><span class="linenos">168</span></a> <span class="n">node</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">child</span><span class="p">)</span>
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</span><span id="L-169"><a href="#L-169"><span class="linenos">169</span></a> <span class="k">return</span> <span class="n">expression</span>
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</span><span id="L-170"><a href="#L-170"><span class="linenos">170</span></a>
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</span><span id="L-171"><a href="#L-171"><span class="linenos">171</span></a>
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</span><span id="L-172"><a href="#L-172"><span class="linenos">172</span></a><span class="k">def</span> <span class="nf">simplify_connectors</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">root</span><span class="o">=</span><span class="kc">True</span><span class="p">):</span>
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</span><span id="L-173"><a href="#L-173"><span class="linenos">173</span></a> <span class="k">def</span> <span class="nf">_simplify_connectors</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">left</span><span class="p">,</span> <span class="n">right</span><span class="p">):</span>
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</span><span id="L-174"><a href="#L-174"><span class="linenos">174</span></a> <span class="k">if</span> <span class="n">left</span> <span class="o">==</span> <span class="n">right</span><span class="p">:</span>
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</span><span id="L-175"><a href="#L-175"><span class="linenos">175</span></a> <span class="k">return</span> <span class="n">left</span>
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</span><span id="L-176"><a href="#L-176"><span class="linenos">176</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">):</span>
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</span><span id="L-177"><a href="#L-177"><span class="linenos">177</span></a> <span class="k">if</span> <span class="n">is_false</span><span class="p">(</span><span class="n">left</span><span class="p">)</span> <span class="ow">or</span> <span class="n">is_false</span><span class="p">(</span><span class="n">right</span><span class="p">):</span>
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|
</span><span id="L-178"><a href="#L-178"><span class="linenos">178</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span>
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</span><span id="L-179"><a href="#L-179"><span class="linenos">179</span></a> <span class="k">if</span> <span class="n">is_null</span><span class="p">(</span><span class="n">left</span><span class="p">)</span> <span class="ow">or</span> <span class="n">is_null</span><span class="p">(</span><span class="n">right</span><span class="p">):</span>
|
|
</span><span id="L-180"><a href="#L-180"><span class="linenos">180</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">null</span><span class="p">()</span>
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|
</span><span id="L-181"><a href="#L-181"><span class="linenos">181</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">left</span><span class="p">)</span> <span class="ow">and</span> <span class="n">always_true</span><span class="p">(</span><span class="n">right</span><span class="p">):</span>
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|
</span><span id="L-182"><a href="#L-182"><span class="linenos">182</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span>
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|
</span><span id="L-183"><a href="#L-183"><span class="linenos">183</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">left</span><span class="p">):</span>
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|
</span><span id="L-184"><a href="#L-184"><span class="linenos">184</span></a> <span class="k">return</span> <span class="n">right</span>
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</span><span id="L-185"><a href="#L-185"><span class="linenos">185</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">right</span><span class="p">):</span>
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</span><span id="L-186"><a href="#L-186"><span class="linenos">186</span></a> <span class="k">return</span> <span class="n">left</span>
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|
</span><span id="L-187"><a href="#L-187"><span class="linenos">187</span></a> <span class="k">return</span> <span class="n">_simplify_comparison</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">left</span><span class="p">,</span> <span class="n">right</span><span class="p">)</span>
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</span><span id="L-188"><a href="#L-188"><span class="linenos">188</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Or</span><span class="p">):</span>
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|
</span><span id="L-189"><a href="#L-189"><span class="linenos">189</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">left</span><span class="p">)</span> <span class="ow">or</span> <span class="n">always_true</span><span class="p">(</span><span class="n">right</span><span class="p">):</span>
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</span><span id="L-190"><a href="#L-190"><span class="linenos">190</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span>
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</span><span id="L-191"><a href="#L-191"><span class="linenos">191</span></a> <span class="k">if</span> <span class="n">is_false</span><span class="p">(</span><span class="n">left</span><span class="p">)</span> <span class="ow">and</span> <span class="n">is_false</span><span class="p">(</span><span class="n">right</span><span class="p">):</span>
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</span><span id="L-192"><a href="#L-192"><span class="linenos">192</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span>
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</span><span id="L-193"><a href="#L-193"><span class="linenos">193</span></a> <span class="k">if</span> <span class="p">(</span>
|
|
</span><span id="L-194"><a href="#L-194"><span class="linenos">194</span></a> <span class="p">(</span><span class="n">is_null</span><span class="p">(</span><span class="n">left</span><span class="p">)</span> <span class="ow">and</span> <span class="n">is_null</span><span class="p">(</span><span class="n">right</span><span class="p">))</span>
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|
</span><span id="L-195"><a href="#L-195"><span class="linenos">195</span></a> <span class="ow">or</span> <span class="p">(</span><span class="n">is_null</span><span class="p">(</span><span class="n">left</span><span class="p">)</span> <span class="ow">and</span> <span class="n">is_false</span><span class="p">(</span><span class="n">right</span><span class="p">))</span>
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|
</span><span id="L-196"><a href="#L-196"><span class="linenos">196</span></a> <span class="ow">or</span> <span class="p">(</span><span class="n">is_false</span><span class="p">(</span><span class="n">left</span><span class="p">)</span> <span class="ow">and</span> <span class="n">is_null</span><span class="p">(</span><span class="n">right</span><span class="p">))</span>
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|
</span><span id="L-197"><a href="#L-197"><span class="linenos">197</span></a> <span class="p">):</span>
|
|
</span><span id="L-198"><a href="#L-198"><span class="linenos">198</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">null</span><span class="p">()</span>
|
|
</span><span id="L-199"><a href="#L-199"><span class="linenos">199</span></a> <span class="k">if</span> <span class="n">is_false</span><span class="p">(</span><span class="n">left</span><span class="p">):</span>
|
|
</span><span id="L-200"><a href="#L-200"><span class="linenos">200</span></a> <span class="k">return</span> <span class="n">right</span>
|
|
</span><span id="L-201"><a href="#L-201"><span class="linenos">201</span></a> <span class="k">if</span> <span class="n">is_false</span><span class="p">(</span><span class="n">right</span><span class="p">):</span>
|
|
</span><span id="L-202"><a href="#L-202"><span class="linenos">202</span></a> <span class="k">return</span> <span class="n">left</span>
|
|
</span><span id="L-203"><a href="#L-203"><span class="linenos">203</span></a> <span class="k">return</span> <span class="n">_simplify_comparison</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">left</span><span class="p">,</span> <span class="n">right</span><span class="p">,</span> <span class="n">or_</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span>
|
|
</span><span id="L-204"><a href="#L-204"><span class="linenos">204</span></a>
|
|
</span><span id="L-205"><a href="#L-205"><span class="linenos">205</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">):</span>
|
|
</span><span id="L-206"><a href="#L-206"><span class="linenos">206</span></a> <span class="k">return</span> <span class="n">_flat_simplify</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">_simplify_connectors</span><span class="p">,</span> <span class="n">root</span><span class="p">)</span>
|
|
</span><span id="L-207"><a href="#L-207"><span class="linenos">207</span></a> <span class="k">return</span> <span class="n">expression</span>
|
|
</span><span id="L-208"><a href="#L-208"><span class="linenos">208</span></a>
|
|
</span><span id="L-209"><a href="#L-209"><span class="linenos">209</span></a>
|
|
</span><span id="L-210"><a href="#L-210"><span class="linenos">210</span></a><span class="n">LT_LTE</span> <span class="o">=</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">LT</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">LTE</span><span class="p">)</span>
|
|
</span><span id="L-211"><a href="#L-211"><span class="linenos">211</span></a><span class="n">GT_GTE</span> <span class="o">=</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">GT</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">GTE</span><span class="p">)</span>
|
|
</span><span id="L-212"><a href="#L-212"><span class="linenos">212</span></a>
|
|
</span><span id="L-213"><a href="#L-213"><span class="linenos">213</span></a><span class="n">COMPARISONS</span> <span class="o">=</span> <span class="p">(</span>
|
|
</span><span id="L-214"><a href="#L-214"><span class="linenos">214</span></a> <span class="o">*</span><span class="n">LT_LTE</span><span class="p">,</span>
|
|
</span><span id="L-215"><a href="#L-215"><span class="linenos">215</span></a> <span class="o">*</span><span class="n">GT_GTE</span><span class="p">,</span>
|
|
</span><span id="L-216"><a href="#L-216"><span class="linenos">216</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">EQ</span><span class="p">,</span>
|
|
</span><span id="L-217"><a href="#L-217"><span class="linenos">217</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">NEQ</span><span class="p">,</span>
|
|
</span><span id="L-218"><a href="#L-218"><span class="linenos">218</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Is</span><span class="p">,</span>
|
|
</span><span id="L-219"><a href="#L-219"><span class="linenos">219</span></a><span class="p">)</span>
|
|
</span><span id="L-220"><a href="#L-220"><span class="linenos">220</span></a>
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|
</span><span id="L-221"><a href="#L-221"><span class="linenos">221</span></a><span class="n">INVERSE_COMPARISONS</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="n">t</span><span class="o">.</span><span class="n">Type</span><span class="p">[</span><span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">],</span> <span class="n">t</span><span class="o">.</span><span class="n">Type</span><span class="p">[</span><span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">]]</span> <span class="o">=</span> <span class="p">{</span>
|
|
</span><span id="L-222"><a href="#L-222"><span class="linenos">222</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">LT</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">GT</span><span class="p">,</span>
|
|
</span><span id="L-223"><a href="#L-223"><span class="linenos">223</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">GT</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">LT</span><span class="p">,</span>
|
|
</span><span id="L-224"><a href="#L-224"><span class="linenos">224</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">LTE</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">GTE</span><span class="p">,</span>
|
|
</span><span id="L-225"><a href="#L-225"><span class="linenos">225</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">GTE</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">LTE</span><span class="p">,</span>
|
|
</span><span id="L-226"><a href="#L-226"><span class="linenos">226</span></a><span class="p">}</span>
|
|
</span><span id="L-227"><a href="#L-227"><span class="linenos">227</span></a>
|
|
</span><span id="L-228"><a href="#L-228"><span class="linenos">228</span></a>
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|
</span><span id="L-229"><a href="#L-229"><span class="linenos">229</span></a><span class="k">def</span> <span class="nf">_simplify_comparison</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">left</span><span class="p">,</span> <span class="n">right</span><span class="p">,</span> <span class="n">or_</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span>
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|
</span><span id="L-230"><a href="#L-230"><span class="linenos">230</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">left</span><span class="p">,</span> <span class="n">COMPARISONS</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">right</span><span class="p">,</span> <span class="n">COMPARISONS</span><span class="p">):</span>
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|
</span><span id="L-231"><a href="#L-231"><span class="linenos">231</span></a> <span class="n">ll</span><span class="p">,</span> <span class="n">lr</span> <span class="o">=</span> <span class="n">left</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">values</span><span class="p">()</span>
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|
</span><span id="L-232"><a href="#L-232"><span class="linenos">232</span></a> <span class="n">rl</span><span class="p">,</span> <span class="n">rr</span> <span class="o">=</span> <span class="n">right</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">values</span><span class="p">()</span>
|
|
</span><span id="L-233"><a href="#L-233"><span class="linenos">233</span></a>
|
|
</span><span id="L-234"><a href="#L-234"><span class="linenos">234</span></a> <span class="n">largs</span> <span class="o">=</span> <span class="p">{</span><span class="n">ll</span><span class="p">,</span> <span class="n">lr</span><span class="p">}</span>
|
|
</span><span id="L-235"><a href="#L-235"><span class="linenos">235</span></a> <span class="n">rargs</span> <span class="o">=</span> <span class="p">{</span><span class="n">rl</span><span class="p">,</span> <span class="n">rr</span><span class="p">}</span>
|
|
</span><span id="L-236"><a href="#L-236"><span class="linenos">236</span></a>
|
|
</span><span id="L-237"><a href="#L-237"><span class="linenos">237</span></a> <span class="n">matching</span> <span class="o">=</span> <span class="n">largs</span> <span class="o">&</span> <span class="n">rargs</span>
|
|
</span><span id="L-238"><a href="#L-238"><span class="linenos">238</span></a> <span class="n">columns</span> <span class="o">=</span> <span class="p">{</span><span class="n">m</span> <span class="k">for</span> <span class="n">m</span> <span class="ow">in</span> <span class="n">matching</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">m</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Column</span><span class="p">)}</span>
|
|
</span><span id="L-239"><a href="#L-239"><span class="linenos">239</span></a>
|
|
</span><span id="L-240"><a href="#L-240"><span class="linenos">240</span></a> <span class="k">if</span> <span class="n">matching</span> <span class="ow">and</span> <span class="n">columns</span><span class="p">:</span>
|
|
</span><span id="L-241"><a href="#L-241"><span class="linenos">241</span></a> <span class="k">try</span><span class="p">:</span>
|
|
</span><span id="L-242"><a href="#L-242"><span class="linenos">242</span></a> <span class="n">l</span> <span class="o">=</span> <span class="n">first</span><span class="p">(</span><span class="n">largs</span> <span class="o">-</span> <span class="n">columns</span><span class="p">)</span>
|
|
</span><span id="L-243"><a href="#L-243"><span class="linenos">243</span></a> <span class="n">r</span> <span class="o">=</span> <span class="n">first</span><span class="p">(</span><span class="n">rargs</span> <span class="o">-</span> <span class="n">columns</span><span class="p">)</span>
|
|
</span><span id="L-244"><a href="#L-244"><span class="linenos">244</span></a> <span class="k">except</span> <span class="ne">StopIteration</span><span class="p">:</span>
|
|
</span><span id="L-245"><a href="#L-245"><span class="linenos">245</span></a> <span class="k">return</span> <span class="n">expression</span>
|
|
</span><span id="L-246"><a href="#L-246"><span class="linenos">246</span></a>
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|
</span><span id="L-247"><a href="#L-247"><span class="linenos">247</span></a> <span class="c1"># make sure the comparison is always of the form x > 1 instead of 1 < x</span>
|
|
</span><span id="L-248"><a href="#L-248"><span class="linenos">248</span></a> <span class="k">if</span> <span class="n">left</span><span class="o">.</span><span class="vm">__class__</span> <span class="ow">in</span> <span class="n">INVERSE_COMPARISONS</span> <span class="ow">and</span> <span class="n">l</span> <span class="o">==</span> <span class="n">ll</span><span class="p">:</span>
|
|
</span><span id="L-249"><a href="#L-249"><span class="linenos">249</span></a> <span class="n">left</span> <span class="o">=</span> <span class="n">INVERSE_COMPARISONS</span><span class="p">[</span><span class="n">left</span><span class="o">.</span><span class="vm">__class__</span><span class="p">](</span><span class="n">this</span><span class="o">=</span><span class="n">lr</span><span class="p">,</span> <span class="n">expression</span><span class="o">=</span><span class="n">ll</span><span class="p">)</span>
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|
</span><span id="L-250"><a href="#L-250"><span class="linenos">250</span></a> <span class="k">if</span> <span class="n">right</span><span class="o">.</span><span class="vm">__class__</span> <span class="ow">in</span> <span class="n">INVERSE_COMPARISONS</span> <span class="ow">and</span> <span class="n">r</span> <span class="o">==</span> <span class="n">rl</span><span class="p">:</span>
|
|
</span><span id="L-251"><a href="#L-251"><span class="linenos">251</span></a> <span class="n">right</span> <span class="o">=</span> <span class="n">INVERSE_COMPARISONS</span><span class="p">[</span><span class="n">right</span><span class="o">.</span><span class="vm">__class__</span><span class="p">](</span><span class="n">this</span><span class="o">=</span><span class="n">rr</span><span class="p">,</span> <span class="n">expression</span><span class="o">=</span><span class="n">rl</span><span class="p">)</span>
|
|
</span><span id="L-252"><a href="#L-252"><span class="linenos">252</span></a>
|
|
</span><span id="L-253"><a href="#L-253"><span class="linenos">253</span></a> <span class="k">if</span> <span class="n">l</span><span class="o">.</span><span class="n">is_number</span> <span class="ow">and</span> <span class="n">r</span><span class="o">.</span><span class="n">is_number</span><span class="p">:</span>
|
|
</span><span id="L-254"><a href="#L-254"><span class="linenos">254</span></a> <span class="n">l</span> <span class="o">=</span> <span class="nb">float</span><span class="p">(</span><span class="n">l</span><span class="o">.</span><span class="n">name</span><span class="p">)</span>
|
|
</span><span id="L-255"><a href="#L-255"><span class="linenos">255</span></a> <span class="n">r</span> <span class="o">=</span> <span class="nb">float</span><span class="p">(</span><span class="n">r</span><span class="o">.</span><span class="n">name</span><span class="p">)</span>
|
|
</span><span id="L-256"><a href="#L-256"><span class="linenos">256</span></a> <span class="k">elif</span> <span class="n">l</span><span class="o">.</span><span class="n">is_string</span> <span class="ow">and</span> <span class="n">r</span><span class="o">.</span><span class="n">is_string</span><span class="p">:</span>
|
|
</span><span id="L-257"><a href="#L-257"><span class="linenos">257</span></a> <span class="n">l</span> <span class="o">=</span> <span class="n">l</span><span class="o">.</span><span class="n">name</span>
|
|
</span><span id="L-258"><a href="#L-258"><span class="linenos">258</span></a> <span class="n">r</span> <span class="o">=</span> <span class="n">r</span><span class="o">.</span><span class="n">name</span>
|
|
</span><span id="L-259"><a href="#L-259"><span class="linenos">259</span></a> <span class="k">else</span><span class="p">:</span>
|
|
</span><span id="L-260"><a href="#L-260"><span class="linenos">260</span></a> <span class="k">return</span> <span class="kc">None</span>
|
|
</span><span id="L-261"><a href="#L-261"><span class="linenos">261</span></a>
|
|
</span><span id="L-262"><a href="#L-262"><span class="linenos">262</span></a> <span class="k">for</span> <span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">av</span><span class="p">),</span> <span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">bv</span><span class="p">)</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">permutations</span><span class="p">(((</span><span class="n">left</span><span class="p">,</span> <span class="n">l</span><span class="p">),</span> <span class="p">(</span><span class="n">right</span><span class="p">,</span> <span class="n">r</span><span class="p">))):</span>
|
|
</span><span id="L-263"><a href="#L-263"><span class="linenos">263</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">LT_LTE</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">LT_LTE</span><span class="p">):</span>
|
|
</span><span id="L-264"><a href="#L-264"><span class="linenos">264</span></a> <span class="k">return</span> <span class="n">left</span> <span class="k">if</span> <span class="p">(</span><span class="n">av</span> <span class="o">></span> <span class="n">bv</span> <span class="k">if</span> <span class="n">or_</span> <span class="k">else</span> <span class="n">av</span> <span class="o"><=</span> <span class="n">bv</span><span class="p">)</span> <span class="k">else</span> <span class="n">right</span>
|
|
</span><span id="L-265"><a href="#L-265"><span class="linenos">265</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">GT_GTE</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">GT_GTE</span><span class="p">):</span>
|
|
</span><span id="L-266"><a href="#L-266"><span class="linenos">266</span></a> <span class="k">return</span> <span class="n">left</span> <span class="k">if</span> <span class="p">(</span><span class="n">av</span> <span class="o"><</span> <span class="n">bv</span> <span class="k">if</span> <span class="n">or_</span> <span class="k">else</span> <span class="n">av</span> <span class="o">>=</span> <span class="n">bv</span><span class="p">)</span> <span class="k">else</span> <span class="n">right</span>
|
|
</span><span id="L-267"><a href="#L-267"><span class="linenos">267</span></a>
|
|
</span><span id="L-268"><a href="#L-268"><span class="linenos">268</span></a> <span class="c1"># we can't ever shortcut to true because the column could be null</span>
|
|
</span><span id="L-269"><a href="#L-269"><span class="linenos">269</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">or_</span><span class="p">:</span>
|
|
</span><span id="L-270"><a href="#L-270"><span class="linenos">270</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">LT</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">GT_GTE</span><span class="p">):</span>
|
|
</span><span id="L-271"><a href="#L-271"><span class="linenos">271</span></a> <span class="k">if</span> <span class="n">av</span> <span class="o"><=</span> <span class="n">bv</span><span class="p">:</span>
|
|
</span><span id="L-272"><a href="#L-272"><span class="linenos">272</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span>
|
|
</span><span id="L-273"><a href="#L-273"><span class="linenos">273</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">GT</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">LT_LTE</span><span class="p">):</span>
|
|
</span><span id="L-274"><a href="#L-274"><span class="linenos">274</span></a> <span class="k">if</span> <span class="n">av</span> <span class="o">>=</span> <span class="n">bv</span><span class="p">:</span>
|
|
</span><span id="L-275"><a href="#L-275"><span class="linenos">275</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span>
|
|
</span><span id="L-276"><a href="#L-276"><span class="linenos">276</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">EQ</span><span class="p">):</span>
|
|
</span><span id="L-277"><a href="#L-277"><span class="linenos">277</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">LT</span><span class="p">):</span>
|
|
</span><span id="L-278"><a href="#L-278"><span class="linenos">278</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> <span class="k">if</span> <span class="n">av</span> <span class="o">>=</span> <span class="n">bv</span> <span class="k">else</span> <span class="n">a</span>
|
|
</span><span id="L-279"><a href="#L-279"><span class="linenos">279</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">LTE</span><span class="p">):</span>
|
|
</span><span id="L-280"><a href="#L-280"><span class="linenos">280</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> <span class="k">if</span> <span class="n">av</span> <span class="o">></span> <span class="n">bv</span> <span class="k">else</span> <span class="n">a</span>
|
|
</span><span id="L-281"><a href="#L-281"><span class="linenos">281</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">GT</span><span class="p">):</span>
|
|
</span><span id="L-282"><a href="#L-282"><span class="linenos">282</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> <span class="k">if</span> <span class="n">av</span> <span class="o"><=</span> <span class="n">bv</span> <span class="k">else</span> <span class="n">a</span>
|
|
</span><span id="L-283"><a href="#L-283"><span class="linenos">283</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">GTE</span><span class="p">):</span>
|
|
</span><span id="L-284"><a href="#L-284"><span class="linenos">284</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> <span class="k">if</span> <span class="n">av</span> <span class="o"><</span> <span class="n">bv</span> <span class="k">else</span> <span class="n">a</span>
|
|
</span><span id="L-285"><a href="#L-285"><span class="linenos">285</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">NEQ</span><span class="p">):</span>
|
|
</span><span id="L-286"><a href="#L-286"><span class="linenos">286</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> <span class="k">if</span> <span class="n">av</span> <span class="o">==</span> <span class="n">bv</span> <span class="k">else</span> <span class="n">a</span>
|
|
</span><span id="L-287"><a href="#L-287"><span class="linenos">287</span></a> <span class="k">return</span> <span class="kc">None</span>
|
|
</span><span id="L-288"><a href="#L-288"><span class="linenos">288</span></a>
|
|
</span><span id="L-289"><a href="#L-289"><span class="linenos">289</span></a>
|
|
</span><span id="L-290"><a href="#L-290"><span class="linenos">290</span></a><span class="k">def</span> <span class="nf">remove_compliments</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">root</span><span class="o">=</span><span class="kc">True</span><span class="p">):</span>
|
|
</span><span id="L-291"><a href="#L-291"><span class="linenos">291</span></a><span class="w"> </span><span class="sd">"""</span>
|
|
</span><span id="L-292"><a href="#L-292"><span class="linenos">292</span></a><span class="sd"> Removing compliments.</span>
|
|
</span><span id="L-293"><a href="#L-293"><span class="linenos">293</span></a>
|
|
</span><span id="L-294"><a href="#L-294"><span class="linenos">294</span></a><span class="sd"> A AND NOT A -> FALSE</span>
|
|
</span><span id="L-295"><a href="#L-295"><span class="linenos">295</span></a><span class="sd"> A OR NOT A -> TRUE</span>
|
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</span><span id="L-296"><a href="#L-296"><span class="linenos">296</span></a><span class="sd"> """</span>
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</span><span id="L-297"><a href="#L-297"><span class="linenos">297</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">)</span> <span class="ow">and</span> <span class="p">(</span><span class="n">root</span> <span class="ow">or</span> <span class="ow">not</span> <span class="n">expression</span><span class="o">.</span><span class="n">same_parent</span><span class="p">):</span>
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</span><span id="L-298"><a href="#L-298"><span class="linenos">298</span></a> <span class="n">compliment</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">)</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span>
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</span><span id="L-299"><a href="#L-299"><span class="linenos">299</span></a>
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</span><span id="L-300"><a href="#L-300"><span class="linenos">300</span></a> <span class="k">for</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">permutations</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">flatten</span><span class="p">(),</span> <span class="mi">2</span><span class="p">):</span>
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</span><span id="L-301"><a href="#L-301"><span class="linenos">301</span></a> <span class="k">if</span> <span class="n">is_complement</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">):</span>
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</span><span id="L-302"><a href="#L-302"><span class="linenos">302</span></a> <span class="k">return</span> <span class="n">compliment</span>
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</span><span id="L-303"><a href="#L-303"><span class="linenos">303</span></a> <span class="k">return</span> <span class="n">expression</span>
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</span><span id="L-304"><a href="#L-304"><span class="linenos">304</span></a>
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</span><span id="L-305"><a href="#L-305"><span class="linenos">305</span></a>
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</span><span id="L-306"><a href="#L-306"><span class="linenos">306</span></a><span class="k">def</span> <span class="nf">uniq_sort</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">generate</span><span class="p">,</span> <span class="n">root</span><span class="o">=</span><span class="kc">True</span><span class="p">):</span>
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</span><span id="L-307"><a href="#L-307"><span class="linenos">307</span></a><span class="w"> </span><span class="sd">"""</span>
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</span><span id="L-308"><a href="#L-308"><span class="linenos">308</span></a><span class="sd"> Uniq and sort a connector.</span>
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</span><span id="L-309"><a href="#L-309"><span class="linenos">309</span></a>
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</span><span id="L-310"><a href="#L-310"><span class="linenos">310</span></a><span class="sd"> C AND A AND B AND B -> A AND B AND C</span>
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</span><span id="L-311"><a href="#L-311"><span class="linenos">311</span></a><span class="sd"> """</span>
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</span><span id="L-312"><a href="#L-312"><span class="linenos">312</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">)</span> <span class="ow">and</span> <span class="p">(</span><span class="n">root</span> <span class="ow">or</span> <span class="ow">not</span> <span class="n">expression</span><span class="o">.</span><span class="n">same_parent</span><span class="p">):</span>
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</span><span id="L-313"><a href="#L-313"><span class="linenos">313</span></a> <span class="n">result_func</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">and_</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">)</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">or_</span>
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</span><span id="L-314"><a href="#L-314"><span class="linenos">314</span></a> <span class="n">flattened</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">flatten</span><span class="p">())</span>
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</span><span id="L-315"><a href="#L-315"><span class="linenos">315</span></a> <span class="n">deduped</span> <span class="o">=</span> <span class="p">{</span><span class="n">generate</span><span class="p">(</span><span class="n">e</span><span class="p">):</span> <span class="n">e</span> <span class="k">for</span> <span class="n">e</span> <span class="ow">in</span> <span class="n">flattened</span><span class="p">}</span>
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</span><span id="L-316"><a href="#L-316"><span class="linenos">316</span></a> <span class="n">arr</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">(</span><span class="n">deduped</span><span class="o">.</span><span class="n">items</span><span class="p">())</span>
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|
</span><span id="L-317"><a href="#L-317"><span class="linenos">317</span></a>
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|
</span><span id="L-318"><a href="#L-318"><span class="linenos">318</span></a> <span class="c1"># check if the operands are already sorted, if not sort them</span>
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</span><span id="L-319"><a href="#L-319"><span class="linenos">319</span></a> <span class="c1"># A AND C AND B -> A AND B AND C</span>
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|
</span><span id="L-320"><a href="#L-320"><span class="linenos">320</span></a> <span class="k">for</span> <span class="n">i</span><span class="p">,</span> <span class="p">(</span><span class="n">sql</span><span class="p">,</span> <span class="n">e</span><span class="p">)</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="n">arr</span><span class="p">[</span><span class="mi">1</span><span class="p">:]):</span>
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</span><span id="L-321"><a href="#L-321"><span class="linenos">321</span></a> <span class="k">if</span> <span class="n">sql</span> <span class="o"><</span> <span class="n">arr</span><span class="p">[</span><span class="n">i</span><span class="p">][</span><span class="mi">0</span><span class="p">]:</span>
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</span><span id="L-322"><a href="#L-322"><span class="linenos">322</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">result_func</span><span class="p">(</span><span class="o">*</span><span class="p">(</span><span class="n">e</span> <span class="k">for</span> <span class="n">_</span><span class="p">,</span> <span class="n">e</span> <span class="ow">in</span> <span class="nb">sorted</span><span class="p">(</span><span class="n">arr</span><span class="p">)),</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span>
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|
</span><span id="L-323"><a href="#L-323"><span class="linenos">323</span></a> <span class="k">break</span>
|
|
</span><span id="L-324"><a href="#L-324"><span class="linenos">324</span></a> <span class="k">else</span><span class="p">:</span>
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|
</span><span id="L-325"><a href="#L-325"><span class="linenos">325</span></a> <span class="c1"># we didn't have to sort but maybe we need to dedup</span>
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|
</span><span id="L-326"><a href="#L-326"><span class="linenos">326</span></a> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">deduped</span><span class="p">)</span> <span class="o"><</span> <span class="nb">len</span><span class="p">(</span><span class="n">flattened</span><span class="p">):</span>
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|
</span><span id="L-327"><a href="#L-327"><span class="linenos">327</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">result_func</span><span class="p">(</span><span class="o">*</span><span class="n">deduped</span><span class="o">.</span><span class="n">values</span><span class="p">(),</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span>
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|
</span><span id="L-328"><a href="#L-328"><span class="linenos">328</span></a>
|
|
</span><span id="L-329"><a href="#L-329"><span class="linenos">329</span></a> <span class="k">return</span> <span class="n">expression</span>
|
|
</span><span id="L-330"><a href="#L-330"><span class="linenos">330</span></a>
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|
</span><span id="L-331"><a href="#L-331"><span class="linenos">331</span></a>
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|
</span><span id="L-332"><a href="#L-332"><span class="linenos">332</span></a><span class="k">def</span> <span class="nf">absorb_and_eliminate</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">root</span><span class="o">=</span><span class="kc">True</span><span class="p">):</span>
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|
</span><span id="L-333"><a href="#L-333"><span class="linenos">333</span></a><span class="w"> </span><span class="sd">"""</span>
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|
</span><span id="L-334"><a href="#L-334"><span class="linenos">334</span></a><span class="sd"> absorption:</span>
|
|
</span><span id="L-335"><a href="#L-335"><span class="linenos">335</span></a><span class="sd"> A AND (A OR B) -> A</span>
|
|
</span><span id="L-336"><a href="#L-336"><span class="linenos">336</span></a><span class="sd"> A OR (A AND B) -> A</span>
|
|
</span><span id="L-337"><a href="#L-337"><span class="linenos">337</span></a><span class="sd"> A AND (NOT A OR B) -> A AND B</span>
|
|
</span><span id="L-338"><a href="#L-338"><span class="linenos">338</span></a><span class="sd"> A OR (NOT A AND B) -> A OR B</span>
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|
</span><span id="L-339"><a href="#L-339"><span class="linenos">339</span></a><span class="sd"> elimination:</span>
|
|
</span><span id="L-340"><a href="#L-340"><span class="linenos">340</span></a><span class="sd"> (A AND B) OR (A AND NOT B) -> A</span>
|
|
</span><span id="L-341"><a href="#L-341"><span class="linenos">341</span></a><span class="sd"> (A OR B) AND (A OR NOT B) -> A</span>
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|
</span><span id="L-342"><a href="#L-342"><span class="linenos">342</span></a><span class="sd"> """</span>
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</span><span id="L-343"><a href="#L-343"><span class="linenos">343</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">)</span> <span class="ow">and</span> <span class="p">(</span><span class="n">root</span> <span class="ow">or</span> <span class="ow">not</span> <span class="n">expression</span><span class="o">.</span><span class="n">same_parent</span><span class="p">):</span>
|
|
</span><span id="L-344"><a href="#L-344"><span class="linenos">344</span></a> <span class="n">kind</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">Or</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">)</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span>
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|
</span><span id="L-345"><a href="#L-345"><span class="linenos">345</span></a>
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|
</span><span id="L-346"><a href="#L-346"><span class="linenos">346</span></a> <span class="k">for</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">permutations</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">flatten</span><span class="p">(),</span> <span class="mi">2</span><span class="p">):</span>
|
|
</span><span id="L-347"><a href="#L-347"><span class="linenos">347</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">kind</span><span class="p">):</span>
|
|
</span><span id="L-348"><a href="#L-348"><span class="linenos">348</span></a> <span class="n">aa</span><span class="p">,</span> <span class="n">ab</span> <span class="o">=</span> <span class="n">a</span><span class="o">.</span><span class="n">unnest_operands</span><span class="p">()</span>
|
|
</span><span id="L-349"><a href="#L-349"><span class="linenos">349</span></a>
|
|
</span><span id="L-350"><a href="#L-350"><span class="linenos">350</span></a> <span class="c1"># absorb</span>
|
|
</span><span id="L-351"><a href="#L-351"><span class="linenos">351</span></a> <span class="k">if</span> <span class="n">is_complement</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">aa</span><span class="p">):</span>
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|
</span><span id="L-352"><a href="#L-352"><span class="linenos">352</span></a> <span class="n">aa</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> <span class="k">if</span> <span class="n">kind</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">())</span>
|
|
</span><span id="L-353"><a href="#L-353"><span class="linenos">353</span></a> <span class="k">elif</span> <span class="n">is_complement</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">ab</span><span class="p">):</span>
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|
</span><span id="L-354"><a href="#L-354"><span class="linenos">354</span></a> <span class="n">ab</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> <span class="k">if</span> <span class="n">kind</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">())</span>
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</span><span id="L-355"><a href="#L-355"><span class="linenos">355</span></a> <span class="k">elif</span> <span class="p">(</span><span class="nb">set</span><span class="p">(</span><span class="n">b</span><span class="o">.</span><span class="n">flatten</span><span class="p">())</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">kind</span><span class="p">)</span> <span class="k">else</span> <span class="p">{</span><span class="n">b</span><span class="p">})</span> <span class="o"><</span> <span class="nb">set</span><span class="p">(</span><span class="n">a</span><span class="o">.</span><span class="n">flatten</span><span class="p">()):</span>
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</span><span id="L-356"><a href="#L-356"><span class="linenos">356</span></a> <span class="n">a</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> <span class="k">if</span> <span class="n">kind</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">())</span>
|
|
</span><span id="L-357"><a href="#L-357"><span class="linenos">357</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">kind</span><span class="p">):</span>
|
|
</span><span id="L-358"><a href="#L-358"><span class="linenos">358</span></a> <span class="c1"># eliminate</span>
|
|
</span><span id="L-359"><a href="#L-359"><span class="linenos">359</span></a> <span class="n">rhs</span> <span class="o">=</span> <span class="n">b</span><span class="o">.</span><span class="n">unnest_operands</span><span class="p">()</span>
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|
</span><span id="L-360"><a href="#L-360"><span class="linenos">360</span></a> <span class="n">ba</span><span class="p">,</span> <span class="n">bb</span> <span class="o">=</span> <span class="n">rhs</span>
|
|
</span><span id="L-361"><a href="#L-361"><span class="linenos">361</span></a>
|
|
</span><span id="L-362"><a href="#L-362"><span class="linenos">362</span></a> <span class="k">if</span> <span class="n">aa</span> <span class="ow">in</span> <span class="n">rhs</span> <span class="ow">and</span> <span class="p">(</span><span class="n">is_complement</span><span class="p">(</span><span class="n">ab</span><span class="p">,</span> <span class="n">ba</span><span class="p">)</span> <span class="ow">or</span> <span class="n">is_complement</span><span class="p">(</span><span class="n">ab</span><span class="p">,</span> <span class="n">bb</span><span class="p">)):</span>
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|
</span><span id="L-363"><a href="#L-363"><span class="linenos">363</span></a> <span class="n">a</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">aa</span><span class="p">)</span>
|
|
</span><span id="L-364"><a href="#L-364"><span class="linenos">364</span></a> <span class="n">b</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">aa</span><span class="p">)</span>
|
|
</span><span id="L-365"><a href="#L-365"><span class="linenos">365</span></a> <span class="k">elif</span> <span class="n">ab</span> <span class="ow">in</span> <span class="n">rhs</span> <span class="ow">and</span> <span class="p">(</span><span class="n">is_complement</span><span class="p">(</span><span class="n">aa</span><span class="p">,</span> <span class="n">ba</span><span class="p">)</span> <span class="ow">or</span> <span class="n">is_complement</span><span class="p">(</span><span class="n">aa</span><span class="p">,</span> <span class="n">bb</span><span class="p">)):</span>
|
|
</span><span id="L-366"><a href="#L-366"><span class="linenos">366</span></a> <span class="n">a</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">ab</span><span class="p">)</span>
|
|
</span><span id="L-367"><a href="#L-367"><span class="linenos">367</span></a> <span class="n">b</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">ab</span><span class="p">)</span>
|
|
</span><span id="L-368"><a href="#L-368"><span class="linenos">368</span></a>
|
|
</span><span id="L-369"><a href="#L-369"><span class="linenos">369</span></a> <span class="k">return</span> <span class="n">expression</span>
|
|
</span><span id="L-370"><a href="#L-370"><span class="linenos">370</span></a>
|
|
</span><span id="L-371"><a href="#L-371"><span class="linenos">371</span></a>
|
|
</span><span id="L-372"><a href="#L-372"><span class="linenos">372</span></a><span class="n">INVERSE_DATE_OPS</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="n">t</span><span class="o">.</span><span class="n">Type</span><span class="p">[</span><span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">],</span> <span class="n">t</span><span class="o">.</span><span class="n">Type</span><span class="p">[</span><span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">]]</span> <span class="o">=</span> <span class="p">{</span>
|
|
</span><span id="L-373"><a href="#L-373"><span class="linenos">373</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DateAdd</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Sub</span><span class="p">,</span>
|
|
</span><span id="L-374"><a href="#L-374"><span class="linenos">374</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DateSub</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Add</span><span class="p">,</span>
|
|
</span><span id="L-375"><a href="#L-375"><span class="linenos">375</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DatetimeAdd</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Sub</span><span class="p">,</span>
|
|
</span><span id="L-376"><a href="#L-376"><span class="linenos">376</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DatetimeSub</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Add</span><span class="p">,</span>
|
|
</span><span id="L-377"><a href="#L-377"><span class="linenos">377</span></a><span class="p">}</span>
|
|
</span><span id="L-378"><a href="#L-378"><span class="linenos">378</span></a>
|
|
</span><span id="L-379"><a href="#L-379"><span class="linenos">379</span></a><span class="n">INVERSE_OPS</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="n">t</span><span class="o">.</span><span class="n">Type</span><span class="p">[</span><span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">],</span> <span class="n">t</span><span class="o">.</span><span class="n">Type</span><span class="p">[</span><span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">]]</span> <span class="o">=</span> <span class="p">{</span>
|
|
</span><span id="L-380"><a href="#L-380"><span class="linenos">380</span></a> <span class="o">**</span><span class="n">INVERSE_DATE_OPS</span><span class="p">,</span>
|
|
</span><span id="L-381"><a href="#L-381"><span class="linenos">381</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Add</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Sub</span><span class="p">,</span>
|
|
</span><span id="L-382"><a href="#L-382"><span class="linenos">382</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Sub</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Add</span><span class="p">,</span>
|
|
</span><span id="L-383"><a href="#L-383"><span class="linenos">383</span></a><span class="p">}</span>
|
|
</span><span id="L-384"><a href="#L-384"><span class="linenos">384</span></a>
|
|
</span><span id="L-385"><a href="#L-385"><span class="linenos">385</span></a>
|
|
</span><span id="L-386"><a href="#L-386"><span class="linenos">386</span></a><span class="k">def</span> <span class="nf">_is_number</span><span class="p">(</span><span class="n">expression</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">)</span> <span class="o">-></span> <span class="nb">bool</span><span class="p">:</span>
|
|
</span><span id="L-387"><a href="#L-387"><span class="linenos">387</span></a> <span class="k">return</span> <span class="n">expression</span><span class="o">.</span><span class="n">is_number</span>
|
|
</span><span id="L-388"><a href="#L-388"><span class="linenos">388</span></a>
|
|
</span><span id="L-389"><a href="#L-389"><span class="linenos">389</span></a>
|
|
</span><span id="L-390"><a href="#L-390"><span class="linenos">390</span></a><span class="k">def</span> <span class="nf">_is_interval</span><span class="p">(</span><span class="n">expression</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">)</span> <span class="o">-></span> <span class="nb">bool</span><span class="p">:</span>
|
|
</span><span id="L-391"><a href="#L-391"><span class="linenos">391</span></a> <span class="k">return</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Interval</span><span class="p">)</span> <span class="ow">and</span> <span class="n">extract_interval</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span>
|
|
</span><span id="L-392"><a href="#L-392"><span class="linenos">392</span></a>
|
|
</span><span id="L-393"><a href="#L-393"><span class="linenos">393</span></a>
|
|
</span><span id="L-394"><a href="#L-394"><span class="linenos">394</span></a><span class="nd">@catch</span><span class="p">(</span><span class="ne">ModuleNotFoundError</span><span class="p">,</span> <span class="n">UnsupportedUnit</span><span class="p">)</span>
|
|
</span><span id="L-395"><a href="#L-395"><span class="linenos">395</span></a><span class="k">def</span> <span class="nf">simplify_equality</span><span class="p">(</span><span class="n">expression</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">)</span> <span class="o">-></span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">:</span>
|
|
</span><span id="L-396"><a href="#L-396"><span class="linenos">396</span></a><span class="w"> </span><span class="sd">"""</span>
|
|
</span><span id="L-397"><a href="#L-397"><span class="linenos">397</span></a><span class="sd"> Use the subtraction and addition properties of equality to simplify expressions:</span>
|
|
</span><span id="L-398"><a href="#L-398"><span class="linenos">398</span></a>
|
|
</span><span id="L-399"><a href="#L-399"><span class="linenos">399</span></a><span class="sd"> x + 1 = 3 becomes x = 2</span>
|
|
</span><span id="L-400"><a href="#L-400"><span class="linenos">400</span></a>
|
|
</span><span id="L-401"><a href="#L-401"><span class="linenos">401</span></a><span class="sd"> There are two binary operations in the above expression: + and =</span>
|
|
</span><span id="L-402"><a href="#L-402"><span class="linenos">402</span></a><span class="sd"> Here's how we reference all the operands in the code below:</span>
|
|
</span><span id="L-403"><a href="#L-403"><span class="linenos">403</span></a>
|
|
</span><span id="L-404"><a href="#L-404"><span class="linenos">404</span></a><span class="sd"> l r</span>
|
|
</span><span id="L-405"><a href="#L-405"><span class="linenos">405</span></a><span class="sd"> x + 1 = 3</span>
|
|
</span><span id="L-406"><a href="#L-406"><span class="linenos">406</span></a><span class="sd"> a b</span>
|
|
</span><span id="L-407"><a href="#L-407"><span class="linenos">407</span></a><span class="sd"> """</span>
|
|
</span><span id="L-408"><a href="#L-408"><span class="linenos">408</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">COMPARISONS</span><span class="p">):</span>
|
|
</span><span id="L-409"><a href="#L-409"><span class="linenos">409</span></a> <span class="n">l</span><span class="p">,</span> <span class="n">r</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">left</span><span class="p">,</span> <span class="n">expression</span><span class="o">.</span><span class="n">right</span>
|
|
</span><span id="L-410"><a href="#L-410"><span class="linenos">410</span></a>
|
|
</span><span id="L-411"><a href="#L-411"><span class="linenos">411</span></a> <span class="k">if</span> <span class="n">l</span><span class="o">.</span><span class="vm">__class__</span> <span class="ow">in</span> <span class="n">INVERSE_OPS</span><span class="p">:</span>
|
|
</span><span id="L-412"><a href="#L-412"><span class="linenos">412</span></a> <span class="k">pass</span>
|
|
</span><span id="L-413"><a href="#L-413"><span class="linenos">413</span></a> <span class="k">elif</span> <span class="n">r</span><span class="o">.</span><span class="vm">__class__</span> <span class="ow">in</span> <span class="n">INVERSE_OPS</span><span class="p">:</span>
|
|
</span><span id="L-414"><a href="#L-414"><span class="linenos">414</span></a> <span class="n">l</span><span class="p">,</span> <span class="n">r</span> <span class="o">=</span> <span class="n">r</span><span class="p">,</span> <span class="n">l</span>
|
|
</span><span id="L-415"><a href="#L-415"><span class="linenos">415</span></a> <span class="k">else</span><span class="p">:</span>
|
|
</span><span id="L-416"><a href="#L-416"><span class="linenos">416</span></a> <span class="k">return</span> <span class="n">expression</span>
|
|
</span><span id="L-417"><a href="#L-417"><span class="linenos">417</span></a>
|
|
</span><span id="L-418"><a href="#L-418"><span class="linenos">418</span></a> <span class="k">if</span> <span class="n">r</span><span class="o">.</span><span class="n">is_number</span><span class="p">:</span>
|
|
</span><span id="L-419"><a href="#L-419"><span class="linenos">419</span></a> <span class="n">a_predicate</span> <span class="o">=</span> <span class="n">_is_number</span>
|
|
</span><span id="L-420"><a href="#L-420"><span class="linenos">420</span></a> <span class="n">b_predicate</span> <span class="o">=</span> <span class="n">_is_number</span>
|
|
</span><span id="L-421"><a href="#L-421"><span class="linenos">421</span></a> <span class="k">elif</span> <span class="n">_is_date_literal</span><span class="p">(</span><span class="n">r</span><span class="p">):</span>
|
|
</span><span id="L-422"><a href="#L-422"><span class="linenos">422</span></a> <span class="n">a_predicate</span> <span class="o">=</span> <span class="n">_is_date_literal</span>
|
|
</span><span id="L-423"><a href="#L-423"><span class="linenos">423</span></a> <span class="n">b_predicate</span> <span class="o">=</span> <span class="n">_is_interval</span>
|
|
</span><span id="L-424"><a href="#L-424"><span class="linenos">424</span></a> <span class="k">else</span><span class="p">:</span>
|
|
</span><span id="L-425"><a href="#L-425"><span class="linenos">425</span></a> <span class="k">return</span> <span class="n">expression</span>
|
|
</span><span id="L-426"><a href="#L-426"><span class="linenos">426</span></a>
|
|
</span><span id="L-427"><a href="#L-427"><span class="linenos">427</span></a> <span class="k">if</span> <span class="n">l</span><span class="o">.</span><span class="vm">__class__</span> <span class="ow">in</span> <span class="n">INVERSE_DATE_OPS</span><span class="p">:</span>
|
|
</span><span id="L-428"><a href="#L-428"><span class="linenos">428</span></a> <span class="n">a</span> <span class="o">=</span> <span class="n">l</span><span class="o">.</span><span class="n">this</span>
|
|
</span><span id="L-429"><a href="#L-429"><span class="linenos">429</span></a> <span class="n">b</span> <span class="o">=</span> <span class="n">l</span><span class="o">.</span><span class="n">interval</span><span class="p">()</span>
|
|
</span><span id="L-430"><a href="#L-430"><span class="linenos">430</span></a> <span class="k">else</span><span class="p">:</span>
|
|
</span><span id="L-431"><a href="#L-431"><span class="linenos">431</span></a> <span class="n">a</span><span class="p">,</span> <span class="n">b</span> <span class="o">=</span> <span class="n">l</span><span class="o">.</span><span class="n">left</span><span class="p">,</span> <span class="n">l</span><span class="o">.</span><span class="n">right</span>
|
|
</span><span id="L-432"><a href="#L-432"><span class="linenos">432</span></a>
|
|
</span><span id="L-433"><a href="#L-433"><span class="linenos">433</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">a_predicate</span><span class="p">(</span><span class="n">a</span><span class="p">)</span> <span class="ow">and</span> <span class="n">b_predicate</span><span class="p">(</span><span class="n">b</span><span class="p">):</span>
|
|
</span><span id="L-434"><a href="#L-434"><span class="linenos">434</span></a> <span class="k">pass</span>
|
|
</span><span id="L-435"><a href="#L-435"><span class="linenos">435</span></a> <span class="k">elif</span> <span class="ow">not</span> <span class="n">a_predicate</span><span class="p">(</span><span class="n">b</span><span class="p">)</span> <span class="ow">and</span> <span class="n">b_predicate</span><span class="p">(</span><span class="n">a</span><span class="p">):</span>
|
|
</span><span id="L-436"><a href="#L-436"><span class="linenos">436</span></a> <span class="n">a</span><span class="p">,</span> <span class="n">b</span> <span class="o">=</span> <span class="n">b</span><span class="p">,</span> <span class="n">a</span>
|
|
</span><span id="L-437"><a href="#L-437"><span class="linenos">437</span></a> <span class="k">else</span><span class="p">:</span>
|
|
</span><span id="L-438"><a href="#L-438"><span class="linenos">438</span></a> <span class="k">return</span> <span class="n">expression</span>
|
|
</span><span id="L-439"><a href="#L-439"><span class="linenos">439</span></a>
|
|
</span><span id="L-440"><a href="#L-440"><span class="linenos">440</span></a> <span class="k">return</span> <span class="n">expression</span><span class="o">.</span><span class="vm">__class__</span><span class="p">(</span>
|
|
</span><span id="L-441"><a href="#L-441"><span class="linenos">441</span></a> <span class="n">this</span><span class="o">=</span><span class="n">a</span><span class="p">,</span> <span class="n">expression</span><span class="o">=</span><span class="n">INVERSE_OPS</span><span class="p">[</span><span class="n">l</span><span class="o">.</span><span class="vm">__class__</span><span class="p">](</span><span class="n">this</span><span class="o">=</span><span class="n">r</span><span class="p">,</span> <span class="n">expression</span><span class="o">=</span><span class="n">b</span><span class="p">)</span>
|
|
</span><span id="L-442"><a href="#L-442"><span class="linenos">442</span></a> <span class="p">)</span>
|
|
</span><span id="L-443"><a href="#L-443"><span class="linenos">443</span></a> <span class="k">return</span> <span class="n">expression</span>
|
|
</span><span id="L-444"><a href="#L-444"><span class="linenos">444</span></a>
|
|
</span><span id="L-445"><a href="#L-445"><span class="linenos">445</span></a>
|
|
</span><span id="L-446"><a href="#L-446"><span class="linenos">446</span></a><span class="k">def</span> <span class="nf">simplify_literals</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">root</span><span class="o">=</span><span class="kc">True</span><span class="p">):</span>
|
|
</span><span id="L-447"><a href="#L-447"><span class="linenos">447</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Binary</span><span class="p">)</span> <span class="ow">and</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">):</span>
|
|
</span><span id="L-448"><a href="#L-448"><span class="linenos">448</span></a> <span class="k">return</span> <span class="n">_flat_simplify</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">_simplify_binary</span><span class="p">,</span> <span class="n">root</span><span class="p">)</span>
|
|
</span><span id="L-449"><a href="#L-449"><span class="linenos">449</span></a>
|
|
</span><span id="L-450"><a href="#L-450"><span class="linenos">450</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Neg</span><span class="p">):</span>
|
|
</span><span id="L-451"><a href="#L-451"><span class="linenos">451</span></a> <span class="n">this</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span>
|
|
</span><span id="L-452"><a href="#L-452"><span class="linenos">452</span></a> <span class="k">if</span> <span class="n">this</span><span class="o">.</span><span class="n">is_number</span><span class="p">:</span>
|
|
</span><span id="L-453"><a href="#L-453"><span class="linenos">453</span></a> <span class="n">value</span> <span class="o">=</span> <span class="n">this</span><span class="o">.</span><span class="n">name</span>
|
|
</span><span id="L-454"><a href="#L-454"><span class="linenos">454</span></a> <span class="k">if</span> <span class="n">value</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">==</span> <span class="s2">"-"</span><span class="p">:</span>
|
|
</span><span id="L-455"><a href="#L-455"><span class="linenos">455</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="o">.</span><span class="n">number</span><span class="p">(</span><span class="n">value</span><span class="p">[</span><span class="mi">1</span><span class="p">:])</span>
|
|
</span><span id="L-456"><a href="#L-456"><span class="linenos">456</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="o">.</span><span class="n">number</span><span class="p">(</span><span class="sa">f</span><span class="s2">"-</span><span class="si">{</span><span class="n">value</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span>
|
|
</span><span id="L-457"><a href="#L-457"><span class="linenos">457</span></a>
|
|
</span><span id="L-458"><a href="#L-458"><span class="linenos">458</span></a> <span class="k">return</span> <span class="n">expression</span>
|
|
</span><span id="L-459"><a href="#L-459"><span class="linenos">459</span></a>
|
|
</span><span id="L-460"><a href="#L-460"><span class="linenos">460</span></a>
|
|
</span><span id="L-461"><a href="#L-461"><span class="linenos">461</span></a><span class="k">def</span> <span class="nf">_simplify_binary</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">):</span>
|
|
</span><span id="L-462"><a href="#L-462"><span class="linenos">462</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Is</span><span class="p">):</span>
|
|
</span><span id="L-463"><a href="#L-463"><span class="linenos">463</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Not</span><span class="p">):</span>
|
|
</span><span id="L-464"><a href="#L-464"><span class="linenos">464</span></a> <span class="n">c</span> <span class="o">=</span> <span class="n">b</span><span class="o">.</span><span class="n">this</span>
|
|
</span><span id="L-465"><a href="#L-465"><span class="linenos">465</span></a> <span class="n">not_</span> <span class="o">=</span> <span class="kc">True</span>
|
|
</span><span id="L-466"><a href="#L-466"><span class="linenos">466</span></a> <span class="k">else</span><span class="p">:</span>
|
|
</span><span id="L-467"><a href="#L-467"><span class="linenos">467</span></a> <span class="n">c</span> <span class="o">=</span> <span class="n">b</span>
|
|
</span><span id="L-468"><a href="#L-468"><span class="linenos">468</span></a> <span class="n">not_</span> <span class="o">=</span> <span class="kc">False</span>
|
|
</span><span id="L-469"><a href="#L-469"><span class="linenos">469</span></a>
|
|
</span><span id="L-470"><a href="#L-470"><span class="linenos">470</span></a> <span class="k">if</span> <span class="n">is_null</span><span class="p">(</span><span class="n">c</span><span class="p">):</span>
|
|
</span><span id="L-471"><a href="#L-471"><span class="linenos">471</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="p">):</span>
|
|
</span><span id="L-472"><a href="#L-472"><span class="linenos">472</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> <span class="k">if</span> <span class="n">not_</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span>
|
|
</span><span id="L-473"><a href="#L-473"><span class="linenos">473</span></a> <span class="k">if</span> <span class="n">is_null</span><span class="p">(</span><span class="n">a</span><span class="p">):</span>
|
|
</span><span id="L-474"><a href="#L-474"><span class="linenos">474</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> <span class="k">if</span> <span class="n">not_</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span>
|
|
</span><span id="L-475"><a href="#L-475"><span class="linenos">475</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">NullSafeEQ</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">NullSafeNEQ</span><span class="p">)):</span>
|
|
</span><span id="L-476"><a href="#L-476"><span class="linenos">476</span></a> <span class="k">return</span> <span class="kc">None</span>
|
|
</span><span id="L-477"><a href="#L-477"><span class="linenos">477</span></a> <span class="k">elif</span> <span class="n">is_null</span><span class="p">(</span><span class="n">a</span><span class="p">)</span> <span class="ow">or</span> <span class="n">is_null</span><span class="p">(</span><span class="n">b</span><span class="p">):</span>
|
|
</span><span id="L-478"><a href="#L-478"><span class="linenos">478</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">null</span><span class="p">()</span>
|
|
</span><span id="L-479"><a href="#L-479"><span class="linenos">479</span></a>
|
|
</span><span id="L-480"><a href="#L-480"><span class="linenos">480</span></a> <span class="k">if</span> <span class="n">a</span><span class="o">.</span><span class="n">is_number</span> <span class="ow">and</span> <span class="n">b</span><span class="o">.</span><span class="n">is_number</span><span class="p">:</span>
|
|
</span><span id="L-481"><a href="#L-481"><span class="linenos">481</span></a> <span class="n">a</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">a</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> <span class="k">if</span> <span class="n">a</span><span class="o">.</span><span class="n">is_int</span> <span class="k">else</span> <span class="n">Decimal</span><span class="p">(</span><span class="n">a</span><span class="o">.</span><span class="n">name</span><span class="p">)</span>
|
|
</span><span id="L-482"><a href="#L-482"><span class="linenos">482</span></a> <span class="n">b</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">b</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> <span class="k">if</span> <span class="n">b</span><span class="o">.</span><span class="n">is_int</span> <span class="k">else</span> <span class="n">Decimal</span><span class="p">(</span><span class="n">b</span><span class="o">.</span><span class="n">name</span><span class="p">)</span>
|
|
</span><span id="L-483"><a href="#L-483"><span class="linenos">483</span></a>
|
|
</span><span id="L-484"><a href="#L-484"><span class="linenos">484</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Add</span><span class="p">):</span>
|
|
</span><span id="L-485"><a href="#L-485"><span class="linenos">485</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="o">.</span><span class="n">number</span><span class="p">(</span><span class="n">a</span> <span class="o">+</span> <span class="n">b</span><span class="p">)</span>
|
|
</span><span id="L-486"><a href="#L-486"><span class="linenos">486</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Sub</span><span class="p">):</span>
|
|
</span><span id="L-487"><a href="#L-487"><span class="linenos">487</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="o">.</span><span class="n">number</span><span class="p">(</span><span class="n">a</span> <span class="o">-</span> <span class="n">b</span><span class="p">)</span>
|
|
</span><span id="L-488"><a href="#L-488"><span class="linenos">488</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Mul</span><span class="p">):</span>
|
|
</span><span id="L-489"><a href="#L-489"><span class="linenos">489</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="o">.</span><span class="n">number</span><span class="p">(</span><span class="n">a</span> <span class="o">*</span> <span class="n">b</span><span class="p">)</span>
|
|
</span><span id="L-490"><a href="#L-490"><span class="linenos">490</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Div</span><span class="p">):</span>
|
|
</span><span id="L-491"><a href="#L-491"><span class="linenos">491</span></a> <span class="c1"># engines have differing int div behavior so intdiv is not safe</span>
|
|
</span><span id="L-492"><a href="#L-492"><span class="linenos">492</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="nb">int</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="nb">int</span><span class="p">):</span>
|
|
</span><span id="L-493"><a href="#L-493"><span class="linenos">493</span></a> <span class="k">return</span> <span class="kc">None</span>
|
|
</span><span id="L-494"><a href="#L-494"><span class="linenos">494</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="o">.</span><span class="n">number</span><span class="p">(</span><span class="n">a</span> <span class="o">/</span> <span class="n">b</span><span class="p">)</span>
|
|
</span><span id="L-495"><a href="#L-495"><span class="linenos">495</span></a>
|
|
</span><span id="L-496"><a href="#L-496"><span class="linenos">496</span></a> <span class="n">boolean</span> <span class="o">=</span> <span class="n">eval_boolean</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">)</span>
|
|
</span><span id="L-497"><a href="#L-497"><span class="linenos">497</span></a>
|
|
</span><span id="L-498"><a href="#L-498"><span class="linenos">498</span></a> <span class="k">if</span> <span class="n">boolean</span><span class="p">:</span>
|
|
</span><span id="L-499"><a href="#L-499"><span class="linenos">499</span></a> <span class="k">return</span> <span class="n">boolean</span>
|
|
</span><span id="L-500"><a href="#L-500"><span class="linenos">500</span></a> <span class="k">elif</span> <span class="n">a</span><span class="o">.</span><span class="n">is_string</span> <span class="ow">and</span> <span class="n">b</span><span class="o">.</span><span class="n">is_string</span><span class="p">:</span>
|
|
</span><span id="L-501"><a href="#L-501"><span class="linenos">501</span></a> <span class="n">boolean</span> <span class="o">=</span> <span class="n">eval_boolean</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">a</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">b</span><span class="o">.</span><span class="n">this</span><span class="p">)</span>
|
|
</span><span id="L-502"><a href="#L-502"><span class="linenos">502</span></a>
|
|
</span><span id="L-503"><a href="#L-503"><span class="linenos">503</span></a> <span class="k">if</span> <span class="n">boolean</span><span class="p">:</span>
|
|
</span><span id="L-504"><a href="#L-504"><span class="linenos">504</span></a> <span class="k">return</span> <span class="n">boolean</span>
|
|
</span><span id="L-505"><a href="#L-505"><span class="linenos">505</span></a> <span class="k">elif</span> <span class="n">_is_date_literal</span><span class="p">(</span><span class="n">a</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Interval</span><span class="p">):</span>
|
|
</span><span id="L-506"><a href="#L-506"><span class="linenos">506</span></a> <span class="n">a</span><span class="p">,</span> <span class="n">b</span> <span class="o">=</span> <span class="n">extract_date</span><span class="p">(</span><span class="n">a</span><span class="p">),</span> <span class="n">extract_interval</span><span class="p">(</span><span class="n">b</span><span class="p">)</span>
|
|
</span><span id="L-507"><a href="#L-507"><span class="linenos">507</span></a> <span class="k">if</span> <span class="n">a</span> <span class="ow">and</span> <span class="n">b</span><span class="p">:</span>
|
|
</span><span id="L-508"><a href="#L-508"><span class="linenos">508</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Add</span><span class="p">):</span>
|
|
</span><span id="L-509"><a href="#L-509"><span class="linenos">509</span></a> <span class="k">return</span> <span class="n">date_literal</span><span class="p">(</span><span class="n">a</span> <span class="o">+</span> <span class="n">b</span><span class="p">)</span>
|
|
</span><span id="L-510"><a href="#L-510"><span class="linenos">510</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Sub</span><span class="p">):</span>
|
|
</span><span id="L-511"><a href="#L-511"><span class="linenos">511</span></a> <span class="k">return</span> <span class="n">date_literal</span><span class="p">(</span><span class="n">a</span> <span class="o">-</span> <span class="n">b</span><span class="p">)</span>
|
|
</span><span id="L-512"><a href="#L-512"><span class="linenos">512</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Interval</span><span class="p">)</span> <span class="ow">and</span> <span class="n">_is_date_literal</span><span class="p">(</span><span class="n">b</span><span class="p">):</span>
|
|
</span><span id="L-513"><a href="#L-513"><span class="linenos">513</span></a> <span class="n">a</span><span class="p">,</span> <span class="n">b</span> <span class="o">=</span> <span class="n">extract_interval</span><span class="p">(</span><span class="n">a</span><span class="p">),</span> <span class="n">extract_date</span><span class="p">(</span><span class="n">b</span><span class="p">)</span>
|
|
</span><span id="L-514"><a href="#L-514"><span class="linenos">514</span></a> <span class="c1"># you cannot subtract a date from an interval</span>
|
|
</span><span id="L-515"><a href="#L-515"><span class="linenos">515</span></a> <span class="k">if</span> <span class="n">a</span> <span class="ow">and</span> <span class="n">b</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Add</span><span class="p">):</span>
|
|
</span><span id="L-516"><a href="#L-516"><span class="linenos">516</span></a> <span class="k">return</span> <span class="n">date_literal</span><span class="p">(</span><span class="n">a</span> <span class="o">+</span> <span class="n">b</span><span class="p">)</span>
|
|
</span><span id="L-517"><a href="#L-517"><span class="linenos">517</span></a>
|
|
</span><span id="L-518"><a href="#L-518"><span class="linenos">518</span></a> <span class="k">return</span> <span class="kc">None</span>
|
|
</span><span id="L-519"><a href="#L-519"><span class="linenos">519</span></a>
|
|
</span><span id="L-520"><a href="#L-520"><span class="linenos">520</span></a>
|
|
</span><span id="L-521"><a href="#L-521"><span class="linenos">521</span></a><span class="k">def</span> <span class="nf">simplify_parens</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span>
|
|
</span><span id="L-522"><a href="#L-522"><span class="linenos">522</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Paren</span><span class="p">):</span>
|
|
</span><span id="L-523"><a href="#L-523"><span class="linenos">523</span></a> <span class="k">return</span> <span class="n">expression</span>
|
|
</span><span id="L-524"><a href="#L-524"><span class="linenos">524</span></a>
|
|
</span><span id="L-525"><a href="#L-525"><span class="linenos">525</span></a> <span class="n">this</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span>
|
|
</span><span id="L-526"><a href="#L-526"><span class="linenos">526</span></a> <span class="n">parent</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">parent</span>
|
|
</span><span id="L-527"><a href="#L-527"><span class="linenos">527</span></a>
|
|
</span><span id="L-528"><a href="#L-528"><span class="linenos">528</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Select</span><span class="p">)</span> <span class="ow">and</span> <span class="p">(</span>
|
|
</span><span id="L-529"><a href="#L-529"><span class="linenos">529</span></a> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">parent</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Condition</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Binary</span><span class="p">))</span>
|
|
</span><span id="L-530"><a href="#L-530"><span class="linenos">530</span></a> <span class="ow">or</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">parent</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Paren</span><span class="p">)</span>
|
|
</span><span id="L-531"><a href="#L-531"><span class="linenos">531</span></a> <span class="ow">or</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Binary</span><span class="p">)</span>
|
|
</span><span id="L-532"><a href="#L-532"><span class="linenos">532</span></a> <span class="ow">or</span> <span class="p">(</span><span class="nb">isinstance</span><span class="p">(</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Predicate</span><span class="p">)</span> <span class="ow">and</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">parent</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Predicate</span><span class="p">))</span>
|
|
</span><span id="L-533"><a href="#L-533"><span class="linenos">533</span></a> <span class="ow">or</span> <span class="p">(</span><span class="nb">isinstance</span><span class="p">(</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Add</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">parent</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Add</span><span class="p">))</span>
|
|
</span><span id="L-534"><a href="#L-534"><span class="linenos">534</span></a> <span class="ow">or</span> <span class="p">(</span><span class="nb">isinstance</span><span class="p">(</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Mul</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">parent</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Mul</span><span class="p">))</span>
|
|
</span><span id="L-535"><a href="#L-535"><span class="linenos">535</span></a> <span class="ow">or</span> <span class="p">(</span><span class="nb">isinstance</span><span class="p">(</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Mul</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">parent</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Add</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Sub</span><span class="p">)))</span>
|
|
</span><span id="L-536"><a href="#L-536"><span class="linenos">536</span></a> <span class="p">):</span>
|
|
</span><span id="L-537"><a href="#L-537"><span class="linenos">537</span></a> <span class="k">return</span> <span class="n">this</span>
|
|
</span><span id="L-538"><a href="#L-538"><span class="linenos">538</span></a> <span class="k">return</span> <span class="n">expression</span>
|
|
</span><span id="L-539"><a href="#L-539"><span class="linenos">539</span></a>
|
|
</span><span id="L-540"><a href="#L-540"><span class="linenos">540</span></a>
|
|
</span><span id="L-541"><a href="#L-541"><span class="linenos">541</span></a><span class="n">CONSTANTS</span> <span class="o">=</span> <span class="p">(</span>
|
|
</span><span id="L-542"><a href="#L-542"><span class="linenos">542</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="p">,</span>
|
|
</span><span id="L-543"><a href="#L-543"><span class="linenos">543</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Boolean</span><span class="p">,</span>
|
|
</span><span id="L-544"><a href="#L-544"><span class="linenos">544</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Null</span><span class="p">,</span>
|
|
</span><span id="L-545"><a href="#L-545"><span class="linenos">545</span></a><span class="p">)</span>
|
|
</span><span id="L-546"><a href="#L-546"><span class="linenos">546</span></a>
|
|
</span><span id="L-547"><a href="#L-547"><span class="linenos">547</span></a>
|
|
</span><span id="L-548"><a href="#L-548"><span class="linenos">548</span></a><span class="k">def</span> <span class="nf">simplify_coalesce</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span>
|
|
</span><span id="L-549"><a href="#L-549"><span class="linenos">549</span></a> <span class="c1"># COALESCE(x) -> x</span>
|
|
</span><span id="L-550"><a href="#L-550"><span class="linenos">550</span></a> <span class="k">if</span> <span class="p">(</span>
|
|
</span><span id="L-551"><a href="#L-551"><span class="linenos">551</span></a> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Coalesce</span><span class="p">)</span>
|
|
</span><span id="L-552"><a href="#L-552"><span class="linenos">552</span></a> <span class="ow">and</span> <span class="ow">not</span> <span class="n">expression</span><span class="o">.</span><span class="n">expressions</span>
|
|
</span><span id="L-553"><a href="#L-553"><span class="linenos">553</span></a> <span class="c1"># COALESCE is also used as a Spark partitioning hint</span>
|
|
</span><span id="L-554"><a href="#L-554"><span class="linenos">554</span></a> <span class="ow">and</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">parent</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Hint</span><span class="p">)</span>
|
|
</span><span id="L-555"><a href="#L-555"><span class="linenos">555</span></a> <span class="p">):</span>
|
|
</span><span id="L-556"><a href="#L-556"><span class="linenos">556</span></a> <span class="k">return</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span>
|
|
</span><span id="L-557"><a href="#L-557"><span class="linenos">557</span></a>
|
|
</span><span id="L-558"><a href="#L-558"><span class="linenos">558</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">COMPARISONS</span><span class="p">):</span>
|
|
</span><span id="L-559"><a href="#L-559"><span class="linenos">559</span></a> <span class="k">return</span> <span class="n">expression</span>
|
|
</span><span id="L-560"><a href="#L-560"><span class="linenos">560</span></a>
|
|
</span><span id="L-561"><a href="#L-561"><span class="linenos">561</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">left</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Coalesce</span><span class="p">):</span>
|
|
</span><span id="L-562"><a href="#L-562"><span class="linenos">562</span></a> <span class="n">coalesce</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">left</span>
|
|
</span><span id="L-563"><a href="#L-563"><span class="linenos">563</span></a> <span class="n">other</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">right</span>
|
|
</span><span id="L-564"><a href="#L-564"><span class="linenos">564</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">right</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Coalesce</span><span class="p">):</span>
|
|
</span><span id="L-565"><a href="#L-565"><span class="linenos">565</span></a> <span class="n">coalesce</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">right</span>
|
|
</span><span id="L-566"><a href="#L-566"><span class="linenos">566</span></a> <span class="n">other</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">left</span>
|
|
</span><span id="L-567"><a href="#L-567"><span class="linenos">567</span></a> <span class="k">else</span><span class="p">:</span>
|
|
</span><span id="L-568"><a href="#L-568"><span class="linenos">568</span></a> <span class="k">return</span> <span class="n">expression</span>
|
|
</span><span id="L-569"><a href="#L-569"><span class="linenos">569</span></a>
|
|
</span><span id="L-570"><a href="#L-570"><span class="linenos">570</span></a> <span class="c1"># This transformation is valid for non-constants,</span>
|
|
</span><span id="L-571"><a href="#L-571"><span class="linenos">571</span></a> <span class="c1"># but it really only does anything if they are both constants.</span>
|
|
</span><span id="L-572"><a href="#L-572"><span class="linenos">572</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">other</span><span class="p">,</span> <span class="n">CONSTANTS</span><span class="p">):</span>
|
|
</span><span id="L-573"><a href="#L-573"><span class="linenos">573</span></a> <span class="k">return</span> <span class="n">expression</span>
|
|
</span><span id="L-574"><a href="#L-574"><span class="linenos">574</span></a>
|
|
</span><span id="L-575"><a href="#L-575"><span class="linenos">575</span></a> <span class="c1"># Find the first constant arg</span>
|
|
</span><span id="L-576"><a href="#L-576"><span class="linenos">576</span></a> <span class="k">for</span> <span class="n">arg_index</span><span class="p">,</span> <span class="n">arg</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="n">coalesce</span><span class="o">.</span><span class="n">expressions</span><span class="p">):</span>
|
|
</span><span id="L-577"><a href="#L-577"><span class="linenos">577</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">arg</span><span class="p">,</span> <span class="n">CONSTANTS</span><span class="p">):</span>
|
|
</span><span id="L-578"><a href="#L-578"><span class="linenos">578</span></a> <span class="k">break</span>
|
|
</span><span id="L-579"><a href="#L-579"><span class="linenos">579</span></a> <span class="k">else</span><span class="p">:</span>
|
|
</span><span id="L-580"><a href="#L-580"><span class="linenos">580</span></a> <span class="k">return</span> <span class="n">expression</span>
|
|
</span><span id="L-581"><a href="#L-581"><span class="linenos">581</span></a>
|
|
</span><span id="L-582"><a href="#L-582"><span class="linenos">582</span></a> <span class="n">coalesce</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"expressions"</span><span class="p">,</span> <span class="n">coalesce</span><span class="o">.</span><span class="n">expressions</span><span class="p">[:</span><span class="n">arg_index</span><span class="p">])</span>
|
|
</span><span id="L-583"><a href="#L-583"><span class="linenos">583</span></a>
|
|
</span><span id="L-584"><a href="#L-584"><span class="linenos">584</span></a> <span class="c1"># Remove the COALESCE function. This is an optimization, skipping a simplify iteration,</span>
|
|
</span><span id="L-585"><a href="#L-585"><span class="linenos">585</span></a> <span class="c1"># since we already remove COALESCE at the top of this function.</span>
|
|
</span><span id="L-586"><a href="#L-586"><span class="linenos">586</span></a> <span class="n">coalesce</span> <span class="o">=</span> <span class="n">coalesce</span> <span class="k">if</span> <span class="n">coalesce</span><span class="o">.</span><span class="n">expressions</span> <span class="k">else</span> <span class="n">coalesce</span><span class="o">.</span><span class="n">this</span>
|
|
</span><span id="L-587"><a href="#L-587"><span class="linenos">587</span></a>
|
|
</span><span id="L-588"><a href="#L-588"><span class="linenos">588</span></a> <span class="c1"># This expression is more complex than when we started, but it will get simplified further</span>
|
|
</span><span id="L-589"><a href="#L-589"><span class="linenos">589</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">paren</span><span class="p">(</span>
|
|
</span><span id="L-590"><a href="#L-590"><span class="linenos">590</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">or_</span><span class="p">(</span>
|
|
</span><span id="L-591"><a href="#L-591"><span class="linenos">591</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">and_</span><span class="p">(</span>
|
|
</span><span id="L-592"><a href="#L-592"><span class="linenos">592</span></a> <span class="n">coalesce</span><span class="o">.</span><span class="n">is_</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">null</span><span class="p">())</span><span class="o">.</span><span class="n">not_</span><span class="p">(</span><span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">),</span>
|
|
</span><span id="L-593"><a href="#L-593"><span class="linenos">593</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">copy</span><span class="p">(),</span>
|
|
</span><span id="L-594"><a href="#L-594"><span class="linenos">594</span></a> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span>
|
|
</span><span id="L-595"><a href="#L-595"><span class="linenos">595</span></a> <span class="p">),</span>
|
|
</span><span id="L-596"><a href="#L-596"><span class="linenos">596</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">and_</span><span class="p">(</span>
|
|
</span><span id="L-597"><a href="#L-597"><span class="linenos">597</span></a> <span class="n">coalesce</span><span class="o">.</span><span class="n">is_</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">null</span><span class="p">()),</span>
|
|
</span><span id="L-598"><a href="#L-598"><span class="linenos">598</span></a> <span class="nb">type</span><span class="p">(</span><span class="n">expression</span><span class="p">)(</span><span class="n">this</span><span class="o">=</span><span class="n">arg</span><span class="o">.</span><span class="n">copy</span><span class="p">(),</span> <span class="n">expression</span><span class="o">=</span><span class="n">other</span><span class="o">.</span><span class="n">copy</span><span class="p">()),</span>
|
|
</span><span id="L-599"><a href="#L-599"><span class="linenos">599</span></a> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span>
|
|
</span><span id="L-600"><a href="#L-600"><span class="linenos">600</span></a> <span class="p">),</span>
|
|
</span><span id="L-601"><a href="#L-601"><span class="linenos">601</span></a> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span>
|
|
</span><span id="L-602"><a href="#L-602"><span class="linenos">602</span></a> <span class="p">)</span>
|
|
</span><span id="L-603"><a href="#L-603"><span class="linenos">603</span></a> <span class="p">)</span>
|
|
</span><span id="L-604"><a href="#L-604"><span class="linenos">604</span></a>
|
|
</span><span id="L-605"><a href="#L-605"><span class="linenos">605</span></a>
|
|
</span><span id="L-606"><a href="#L-606"><span class="linenos">606</span></a><span class="n">CONCATS</span> <span class="o">=</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Concat</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DPipe</span><span class="p">)</span>
|
|
</span><span id="L-607"><a href="#L-607"><span class="linenos">607</span></a><span class="n">SAFE_CONCATS</span> <span class="o">=</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">SafeConcat</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">SafeDPipe</span><span class="p">)</span>
|
|
</span><span id="L-608"><a href="#L-608"><span class="linenos">608</span></a>
|
|
</span><span id="L-609"><a href="#L-609"><span class="linenos">609</span></a>
|
|
</span><span id="L-610"><a href="#L-610"><span class="linenos">610</span></a><span class="k">def</span> <span class="nf">simplify_concat</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span>
|
|
</span><span id="L-611"><a href="#L-611"><span class="linenos">611</span></a><span class="w"> </span><span class="sd">"""Reduces all groups that contain string literals by concatenating them."""</span>
|
|
</span><span id="L-612"><a href="#L-612"><span class="linenos">612</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">CONCATS</span><span class="p">)</span> <span class="ow">or</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">ConcatWs</span><span class="p">):</span>
|
|
</span><span id="L-613"><a href="#L-613"><span class="linenos">613</span></a> <span class="k">return</span> <span class="n">expression</span>
|
|
</span><span id="L-614"><a href="#L-614"><span class="linenos">614</span></a>
|
|
</span><span id="L-615"><a href="#L-615"><span class="linenos">615</span></a> <span class="n">new_args</span> <span class="o">=</span> <span class="p">[]</span>
|
|
</span><span id="L-616"><a href="#L-616"><span class="linenos">616</span></a> <span class="k">for</span> <span class="n">is_string_group</span><span class="p">,</span> <span class="n">group</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">groupby</span><span class="p">(</span>
|
|
</span><span id="L-617"><a href="#L-617"><span class="linenos">617</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">expressions</span> <span class="ow">or</span> <span class="n">expression</span><span class="o">.</span><span class="n">flatten</span><span class="p">(),</span> <span class="k">lambda</span> <span class="n">e</span><span class="p">:</span> <span class="n">e</span><span class="o">.</span><span class="n">is_string</span>
|
|
</span><span id="L-618"><a href="#L-618"><span class="linenos">618</span></a> <span class="p">):</span>
|
|
</span><span id="L-619"><a href="#L-619"><span class="linenos">619</span></a> <span class="k">if</span> <span class="n">is_string_group</span><span class="p">:</span>
|
|
</span><span id="L-620"><a href="#L-620"><span class="linenos">620</span></a> <span class="n">new_args</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="o">.</span><span class="n">string</span><span class="p">(</span><span class="s2">""</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">string</span><span class="o">.</span><span class="n">name</span> <span class="k">for</span> <span class="n">string</span> <span class="ow">in</span> <span class="n">group</span><span class="p">)))</span>
|
|
</span><span id="L-621"><a href="#L-621"><span class="linenos">621</span></a> <span class="k">else</span><span class="p">:</span>
|
|
</span><span id="L-622"><a href="#L-622"><span class="linenos">622</span></a> <span class="n">new_args</span><span class="o">.</span><span class="n">extend</span><span class="p">(</span><span class="n">group</span><span class="p">)</span>
|
|
</span><span id="L-623"><a href="#L-623"><span class="linenos">623</span></a>
|
|
</span><span id="L-624"><a href="#L-624"><span class="linenos">624</span></a> <span class="c1"># Ensures we preserve the right concat type, i.e. whether it's "safe" or not</span>
|
|
</span><span id="L-625"><a href="#L-625"><span class="linenos">625</span></a> <span class="n">concat_type</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">SafeConcat</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">SAFE_CONCATS</span><span class="p">)</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">Concat</span>
|
|
</span><span id="L-626"><a href="#L-626"><span class="linenos">626</span></a> <span class="k">return</span> <span class="n">new_args</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">new_args</span><span class="p">)</span> <span class="o">==</span> <span class="mi">1</span> <span class="k">else</span> <span class="n">concat_type</span><span class="p">(</span><span class="n">expressions</span><span class="o">=</span><span class="n">new_args</span><span class="p">)</span>
|
|
</span><span id="L-627"><a href="#L-627"><span class="linenos">627</span></a>
|
|
</span><span id="L-628"><a href="#L-628"><span class="linenos">628</span></a>
|
|
</span><span id="L-629"><a href="#L-629"><span class="linenos">629</span></a><span class="n">DateRange</span> <span class="o">=</span> <span class="n">t</span><span class="o">.</span><span class="n">Tuple</span><span class="p">[</span><span class="n">datetime</span><span class="o">.</span><span class="n">date</span><span class="p">,</span> <span class="n">datetime</span><span class="o">.</span><span class="n">date</span><span class="p">]</span>
|
|
</span><span id="L-630"><a href="#L-630"><span class="linenos">630</span></a>
|
|
</span><span id="L-631"><a href="#L-631"><span class="linenos">631</span></a>
|
|
</span><span id="L-632"><a href="#L-632"><span class="linenos">632</span></a><span class="k">def</span> <span class="nf">_datetrunc_range</span><span class="p">(</span><span class="n">date</span><span class="p">:</span> <span class="n">datetime</span><span class="o">.</span><span class="n">date</span><span class="p">,</span> <span class="n">unit</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="n">DateRange</span><span class="p">]:</span>
|
|
</span><span id="L-633"><a href="#L-633"><span class="linenos">633</span></a><span class="w"> </span><span class="sd">"""</span>
|
|
</span><span id="L-634"><a href="#L-634"><span class="linenos">634</span></a><span class="sd"> Get the date range for a DATE_TRUNC equality comparison:</span>
|
|
</span><span id="L-635"><a href="#L-635"><span class="linenos">635</span></a>
|
|
</span><span id="L-636"><a href="#L-636"><span class="linenos">636</span></a><span class="sd"> Example:</span>
|
|
</span><span id="L-637"><a href="#L-637"><span class="linenos">637</span></a><span class="sd"> _datetrunc_range(date(2021-01-01), 'year') == (date(2021-01-01), date(2022-01-01))</span>
|
|
</span><span id="L-638"><a href="#L-638"><span class="linenos">638</span></a><span class="sd"> Returns:</span>
|
|
</span><span id="L-639"><a href="#L-639"><span class="linenos">639</span></a><span class="sd"> tuple of [min, max) or None if a value can never be equal to `date` for `unit`</span>
|
|
</span><span id="L-640"><a href="#L-640"><span class="linenos">640</span></a><span class="sd"> """</span>
|
|
</span><span id="L-641"><a href="#L-641"><span class="linenos">641</span></a> <span class="n">floor</span> <span class="o">=</span> <span class="n">date_floor</span><span class="p">(</span><span class="n">date</span><span class="p">,</span> <span class="n">unit</span><span class="p">)</span>
|
|
</span><span id="L-642"><a href="#L-642"><span class="linenos">642</span></a>
|
|
</span><span id="L-643"><a href="#L-643"><span class="linenos">643</span></a> <span class="k">if</span> <span class="n">date</span> <span class="o">!=</span> <span class="n">floor</span><span class="p">:</span>
|
|
</span><span id="L-644"><a href="#L-644"><span class="linenos">644</span></a> <span class="c1"># This will always be False, except for NULL values.</span>
|
|
</span><span id="L-645"><a href="#L-645"><span class="linenos">645</span></a> <span class="k">return</span> <span class="kc">None</span>
|
|
</span><span id="L-646"><a href="#L-646"><span class="linenos">646</span></a>
|
|
</span><span id="L-647"><a href="#L-647"><span class="linenos">647</span></a> <span class="k">return</span> <span class="n">floor</span><span class="p">,</span> <span class="n">floor</span> <span class="o">+</span> <span class="n">interval</span><span class="p">(</span><span class="n">unit</span><span class="p">)</span>
|
|
</span><span id="L-648"><a href="#L-648"><span class="linenos">648</span></a>
|
|
</span><span id="L-649"><a href="#L-649"><span class="linenos">649</span></a>
|
|
</span><span id="L-650"><a href="#L-650"><span class="linenos">650</span></a><span class="k">def</span> <span class="nf">_datetrunc_eq_expression</span><span class="p">(</span><span class="n">left</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">,</span> <span class="n">drange</span><span class="p">:</span> <span class="n">DateRange</span><span class="p">)</span> <span class="o">-></span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">:</span>
|
|
</span><span id="L-651"><a href="#L-651"><span class="linenos">651</span></a><span class="w"> </span><span class="sd">"""Get the logical expression for a date range"""</span>
|
|
</span><span id="L-652"><a href="#L-652"><span class="linenos">652</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">and_</span><span class="p">(</span>
|
|
</span><span id="L-653"><a href="#L-653"><span class="linenos">653</span></a> <span class="n">left</span> <span class="o">>=</span> <span class="n">date_literal</span><span class="p">(</span><span class="n">drange</span><span class="p">[</span><span class="mi">0</span><span class="p">]),</span>
|
|
</span><span id="L-654"><a href="#L-654"><span class="linenos">654</span></a> <span class="n">left</span> <span class="o"><</span> <span class="n">date_literal</span><span class="p">(</span><span class="n">drange</span><span class="p">[</span><span class="mi">1</span><span class="p">]),</span>
|
|
</span><span id="L-655"><a href="#L-655"><span class="linenos">655</span></a> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span>
|
|
</span><span id="L-656"><a href="#L-656"><span class="linenos">656</span></a> <span class="p">)</span>
|
|
</span><span id="L-657"><a href="#L-657"><span class="linenos">657</span></a>
|
|
</span><span id="L-658"><a href="#L-658"><span class="linenos">658</span></a>
|
|
</span><span id="L-659"><a href="#L-659"><span class="linenos">659</span></a><span class="k">def</span> <span class="nf">_datetrunc_eq</span><span class="p">(</span>
|
|
</span><span id="L-660"><a href="#L-660"><span class="linenos">660</span></a> <span class="n">left</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">,</span> <span class="n">date</span><span class="p">:</span> <span class="n">datetime</span><span class="o">.</span><span class="n">date</span><span class="p">,</span> <span class="n">unit</span><span class="p">:</span> <span class="nb">str</span>
|
|
</span><span id="L-661"><a href="#L-661"><span class="linenos">661</span></a><span class="p">)</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">]:</span>
|
|
</span><span id="L-662"><a href="#L-662"><span class="linenos">662</span></a> <span class="n">drange</span> <span class="o">=</span> <span class="n">_datetrunc_range</span><span class="p">(</span><span class="n">date</span><span class="p">,</span> <span class="n">unit</span><span class="p">)</span>
|
|
</span><span id="L-663"><a href="#L-663"><span class="linenos">663</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">drange</span><span class="p">:</span>
|
|
</span><span id="L-664"><a href="#L-664"><span class="linenos">664</span></a> <span class="k">return</span> <span class="kc">None</span>
|
|
</span><span id="L-665"><a href="#L-665"><span class="linenos">665</span></a>
|
|
</span><span id="L-666"><a href="#L-666"><span class="linenos">666</span></a> <span class="k">return</span> <span class="n">_datetrunc_eq_expression</span><span class="p">(</span><span class="n">left</span><span class="p">,</span> <span class="n">drange</span><span class="p">)</span>
|
|
</span><span id="L-667"><a href="#L-667"><span class="linenos">667</span></a>
|
|
</span><span id="L-668"><a href="#L-668"><span class="linenos">668</span></a>
|
|
</span><span id="L-669"><a href="#L-669"><span class="linenos">669</span></a><span class="k">def</span> <span class="nf">_datetrunc_neq</span><span class="p">(</span>
|
|
</span><span id="L-670"><a href="#L-670"><span class="linenos">670</span></a> <span class="n">left</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">,</span> <span class="n">date</span><span class="p">:</span> <span class="n">datetime</span><span class="o">.</span><span class="n">date</span><span class="p">,</span> <span class="n">unit</span><span class="p">:</span> <span class="nb">str</span>
|
|
</span><span id="L-671"><a href="#L-671"><span class="linenos">671</span></a><span class="p">)</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">]:</span>
|
|
</span><span id="L-672"><a href="#L-672"><span class="linenos">672</span></a> <span class="n">drange</span> <span class="o">=</span> <span class="n">_datetrunc_range</span><span class="p">(</span><span class="n">date</span><span class="p">,</span> <span class="n">unit</span><span class="p">)</span>
|
|
</span><span id="L-673"><a href="#L-673"><span class="linenos">673</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">drange</span><span class="p">:</span>
|
|
</span><span id="L-674"><a href="#L-674"><span class="linenos">674</span></a> <span class="k">return</span> <span class="kc">None</span>
|
|
</span><span id="L-675"><a href="#L-675"><span class="linenos">675</span></a>
|
|
</span><span id="L-676"><a href="#L-676"><span class="linenos">676</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">and_</span><span class="p">(</span>
|
|
</span><span id="L-677"><a href="#L-677"><span class="linenos">677</span></a> <span class="n">left</span> <span class="o"><</span> <span class="n">date_literal</span><span class="p">(</span><span class="n">drange</span><span class="p">[</span><span class="mi">0</span><span class="p">]),</span>
|
|
</span><span id="L-678"><a href="#L-678"><span class="linenos">678</span></a> <span class="n">left</span> <span class="o">>=</span> <span class="n">date_literal</span><span class="p">(</span><span class="n">drange</span><span class="p">[</span><span class="mi">1</span><span class="p">]),</span>
|
|
</span><span id="L-679"><a href="#L-679"><span class="linenos">679</span></a> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span>
|
|
</span><span id="L-680"><a href="#L-680"><span class="linenos">680</span></a> <span class="p">)</span>
|
|
</span><span id="L-681"><a href="#L-681"><span class="linenos">681</span></a>
|
|
</span><span id="L-682"><a href="#L-682"><span class="linenos">682</span></a>
|
|
</span><span id="L-683"><a href="#L-683"><span class="linenos">683</span></a><span class="n">DateTruncBinaryTransform</span> <span class="o">=</span> <span class="n">t</span><span class="o">.</span><span class="n">Callable</span><span class="p">[</span>
|
|
</span><span id="L-684"><a href="#L-684"><span class="linenos">684</span></a> <span class="p">[</span><span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">,</span> <span class="n">datetime</span><span class="o">.</span><span class="n">date</span><span class="p">,</span> <span class="nb">str</span><span class="p">],</span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">]</span>
|
|
</span><span id="L-685"><a href="#L-685"><span class="linenos">685</span></a><span class="p">]</span>
|
|
</span><span id="L-686"><a href="#L-686"><span class="linenos">686</span></a><span class="n">DATETRUNC_BINARY_COMPARISONS</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="n">t</span><span class="o">.</span><span class="n">Type</span><span class="p">[</span><span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">],</span> <span class="n">DateTruncBinaryTransform</span><span class="p">]</span> <span class="o">=</span> <span class="p">{</span>
|
|
</span><span id="L-687"><a href="#L-687"><span class="linenos">687</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">LT</span><span class="p">:</span> <span class="k">lambda</span> <span class="n">l</span><span class="p">,</span> <span class="n">d</span><span class="p">,</span> <span class="n">u</span><span class="p">:</span> <span class="n">l</span> <span class="o"><</span> <span class="n">date_literal</span><span class="p">(</span><span class="n">date_floor</span><span class="p">(</span><span class="n">d</span><span class="p">,</span> <span class="n">u</span><span class="p">)),</span>
|
|
</span><span id="L-688"><a href="#L-688"><span class="linenos">688</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">GT</span><span class="p">:</span> <span class="k">lambda</span> <span class="n">l</span><span class="p">,</span> <span class="n">d</span><span class="p">,</span> <span class="n">u</span><span class="p">:</span> <span class="n">l</span> <span class="o">>=</span> <span class="n">date_literal</span><span class="p">(</span><span class="n">date_floor</span><span class="p">(</span><span class="n">d</span><span class="p">,</span> <span class="n">u</span><span class="p">)</span> <span class="o">+</span> <span class="n">interval</span><span class="p">(</span><span class="n">u</span><span class="p">)),</span>
|
|
</span><span id="L-689"><a href="#L-689"><span class="linenos">689</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">LTE</span><span class="p">:</span> <span class="k">lambda</span> <span class="n">l</span><span class="p">,</span> <span class="n">d</span><span class="p">,</span> <span class="n">u</span><span class="p">:</span> <span class="n">l</span> <span class="o"><</span> <span class="n">date_literal</span><span class="p">(</span><span class="n">date_floor</span><span class="p">(</span><span class="n">d</span><span class="p">,</span> <span class="n">u</span><span class="p">)</span> <span class="o">+</span> <span class="n">interval</span><span class="p">(</span><span class="n">u</span><span class="p">)),</span>
|
|
</span><span id="L-690"><a href="#L-690"><span class="linenos">690</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">GTE</span><span class="p">:</span> <span class="k">lambda</span> <span class="n">l</span><span class="p">,</span> <span class="n">d</span><span class="p">,</span> <span class="n">u</span><span class="p">:</span> <span class="n">l</span> <span class="o">>=</span> <span class="n">date_literal</span><span class="p">(</span><span class="n">date_ceil</span><span class="p">(</span><span class="n">d</span><span class="p">,</span> <span class="n">u</span><span class="p">)),</span>
|
|
</span><span id="L-691"><a href="#L-691"><span class="linenos">691</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">EQ</span><span class="p">:</span> <span class="n">_datetrunc_eq</span><span class="p">,</span>
|
|
</span><span id="L-692"><a href="#L-692"><span class="linenos">692</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">NEQ</span><span class="p">:</span> <span class="n">_datetrunc_neq</span><span class="p">,</span>
|
|
</span><span id="L-693"><a href="#L-693"><span class="linenos">693</span></a><span class="p">}</span>
|
|
</span><span id="L-694"><a href="#L-694"><span class="linenos">694</span></a><span class="n">DATETRUNC_COMPARISONS</span> <span class="o">=</span> <span class="p">{</span><span class="n">exp</span><span class="o">.</span><span class="n">In</span><span class="p">,</span> <span class="o">*</span><span class="n">DATETRUNC_BINARY_COMPARISONS</span><span class="p">}</span>
|
|
</span><span id="L-695"><a href="#L-695"><span class="linenos">695</span></a>
|
|
</span><span id="L-696"><a href="#L-696"><span class="linenos">696</span></a>
|
|
</span><span id="L-697"><a href="#L-697"><span class="linenos">697</span></a><span class="k">def</span> <span class="nf">_is_datetrunc_predicate</span><span class="p">(</span><span class="n">left</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">,</span> <span class="n">right</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">)</span> <span class="o">-></span> <span class="nb">bool</span><span class="p">:</span>
|
|
</span><span id="L-698"><a href="#L-698"><span class="linenos">698</span></a> <span class="k">return</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">left</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">DateTrunc</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">TimestampTrunc</span><span class="p">))</span> <span class="ow">and</span> <span class="n">_is_date_literal</span><span class="p">(</span><span class="n">right</span><span class="p">)</span>
|
|
</span><span id="L-699"><a href="#L-699"><span class="linenos">699</span></a>
|
|
</span><span id="L-700"><a href="#L-700"><span class="linenos">700</span></a>
|
|
</span><span id="L-701"><a href="#L-701"><span class="linenos">701</span></a><span class="nd">@catch</span><span class="p">(</span><span class="ne">ModuleNotFoundError</span><span class="p">,</span> <span class="n">UnsupportedUnit</span><span class="p">)</span>
|
|
</span><span id="L-702"><a href="#L-702"><span class="linenos">702</span></a><span class="k">def</span> <span class="nf">simplify_datetrunc_predicate</span><span class="p">(</span><span class="n">expression</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">)</span> <span class="o">-></span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">:</span>
|
|
</span><span id="L-703"><a href="#L-703"><span class="linenos">703</span></a><span class="w"> </span><span class="sd">"""Simplify expressions like `DATE_TRUNC('year', x) >= CAST('2021-01-01' AS DATE)`"""</span>
|
|
</span><span id="L-704"><a href="#L-704"><span class="linenos">704</span></a> <span class="n">comparison</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="vm">__class__</span>
|
|
</span><span id="L-705"><a href="#L-705"><span class="linenos">705</span></a>
|
|
</span><span id="L-706"><a href="#L-706"><span class="linenos">706</span></a> <span class="k">if</span> <span class="n">comparison</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">DATETRUNC_COMPARISONS</span><span class="p">:</span>
|
|
</span><span id="L-707"><a href="#L-707"><span class="linenos">707</span></a> <span class="k">return</span> <span class="n">expression</span>
|
|
</span><span id="L-708"><a href="#L-708"><span class="linenos">708</span></a>
|
|
</span><span id="L-709"><a href="#L-709"><span class="linenos">709</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Binary</span><span class="p">):</span>
|
|
</span><span id="L-710"><a href="#L-710"><span class="linenos">710</span></a> <span class="n">l</span><span class="p">,</span> <span class="n">r</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">left</span><span class="p">,</span> <span class="n">expression</span><span class="o">.</span><span class="n">right</span>
|
|
</span><span id="L-711"><a href="#L-711"><span class="linenos">711</span></a>
|
|
</span><span id="L-712"><a href="#L-712"><span class="linenos">712</span></a> <span class="k">if</span> <span class="n">_is_datetrunc_predicate</span><span class="p">(</span><span class="n">l</span><span class="p">,</span> <span class="n">r</span><span class="p">):</span>
|
|
</span><span id="L-713"><a href="#L-713"><span class="linenos">713</span></a> <span class="k">pass</span>
|
|
</span><span id="L-714"><a href="#L-714"><span class="linenos">714</span></a> <span class="k">elif</span> <span class="n">_is_datetrunc_predicate</span><span class="p">(</span><span class="n">r</span><span class="p">,</span> <span class="n">l</span><span class="p">):</span>
|
|
</span><span id="L-715"><a href="#L-715"><span class="linenos">715</span></a> <span class="n">comparison</span> <span class="o">=</span> <span class="n">INVERSE_COMPARISONS</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">comparison</span><span class="p">,</span> <span class="n">comparison</span><span class="p">)</span>
|
|
</span><span id="L-716"><a href="#L-716"><span class="linenos">716</span></a> <span class="n">l</span><span class="p">,</span> <span class="n">r</span> <span class="o">=</span> <span class="n">r</span><span class="p">,</span> <span class="n">l</span>
|
|
</span><span id="L-717"><a href="#L-717"><span class="linenos">717</span></a> <span class="k">else</span><span class="p">:</span>
|
|
</span><span id="L-718"><a href="#L-718"><span class="linenos">718</span></a> <span class="k">return</span> <span class="n">expression</span>
|
|
</span><span id="L-719"><a href="#L-719"><span class="linenos">719</span></a>
|
|
</span><span id="L-720"><a href="#L-720"><span class="linenos">720</span></a> <span class="n">unit</span> <span class="o">=</span> <span class="n">l</span><span class="o">.</span><span class="n">unit</span><span class="o">.</span><span class="n">name</span><span class="o">.</span><span class="n">lower</span><span class="p">()</span>
|
|
</span><span id="L-721"><a href="#L-721"><span class="linenos">721</span></a> <span class="n">date</span> <span class="o">=</span> <span class="n">extract_date</span><span class="p">(</span><span class="n">r</span><span class="p">)</span>
|
|
</span><span id="L-722"><a href="#L-722"><span class="linenos">722</span></a>
|
|
</span><span id="L-723"><a href="#L-723"><span class="linenos">723</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">date</span><span class="p">:</span>
|
|
</span><span id="L-724"><a href="#L-724"><span class="linenos">724</span></a> <span class="k">return</span> <span class="n">expression</span>
|
|
</span><span id="L-725"><a href="#L-725"><span class="linenos">725</span></a>
|
|
</span><span id="L-726"><a href="#L-726"><span class="linenos">726</span></a> <span class="k">return</span> <span class="n">DATETRUNC_BINARY_COMPARISONS</span><span class="p">[</span><span class="n">comparison</span><span class="p">](</span><span class="n">l</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">date</span><span class="p">,</span> <span class="n">unit</span><span class="p">)</span> <span class="ow">or</span> <span class="n">expression</span>
|
|
</span><span id="L-727"><a href="#L-727"><span class="linenos">727</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">In</span><span class="p">):</span>
|
|
</span><span id="L-728"><a href="#L-728"><span class="linenos">728</span></a> <span class="n">l</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span>
|
|
</span><span id="L-729"><a href="#L-729"><span class="linenos">729</span></a> <span class="n">rs</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">expressions</span>
|
|
</span><span id="L-730"><a href="#L-730"><span class="linenos">730</span></a>
|
|
</span><span id="L-731"><a href="#L-731"><span class="linenos">731</span></a> <span class="k">if</span> <span class="n">rs</span> <span class="ow">and</span> <span class="nb">all</span><span class="p">(</span><span class="n">_is_datetrunc_predicate</span><span class="p">(</span><span class="n">l</span><span class="p">,</span> <span class="n">r</span><span class="p">)</span> <span class="k">for</span> <span class="n">r</span> <span class="ow">in</span> <span class="n">rs</span><span class="p">):</span>
|
|
</span><span id="L-732"><a href="#L-732"><span class="linenos">732</span></a> <span class="n">unit</span> <span class="o">=</span> <span class="n">l</span><span class="o">.</span><span class="n">unit</span><span class="o">.</span><span class="n">name</span><span class="o">.</span><span class="n">lower</span><span class="p">()</span>
|
|
</span><span id="L-733"><a href="#L-733"><span class="linenos">733</span></a>
|
|
</span><span id="L-734"><a href="#L-734"><span class="linenos">734</span></a> <span class="n">ranges</span> <span class="o">=</span> <span class="p">[]</span>
|
|
</span><span id="L-735"><a href="#L-735"><span class="linenos">735</span></a> <span class="k">for</span> <span class="n">r</span> <span class="ow">in</span> <span class="n">rs</span><span class="p">:</span>
|
|
</span><span id="L-736"><a href="#L-736"><span class="linenos">736</span></a> <span class="n">date</span> <span class="o">=</span> <span class="n">extract_date</span><span class="p">(</span><span class="n">r</span><span class="p">)</span>
|
|
</span><span id="L-737"><a href="#L-737"><span class="linenos">737</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">date</span><span class="p">:</span>
|
|
</span><span id="L-738"><a href="#L-738"><span class="linenos">738</span></a> <span class="k">return</span> <span class="n">expression</span>
|
|
</span><span id="L-739"><a href="#L-739"><span class="linenos">739</span></a> <span class="n">drange</span> <span class="o">=</span> <span class="n">_datetrunc_range</span><span class="p">(</span><span class="n">date</span><span class="p">,</span> <span class="n">unit</span><span class="p">)</span>
|
|
</span><span id="L-740"><a href="#L-740"><span class="linenos">740</span></a> <span class="k">if</span> <span class="n">drange</span><span class="p">:</span>
|
|
</span><span id="L-741"><a href="#L-741"><span class="linenos">741</span></a> <span class="n">ranges</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">drange</span><span class="p">)</span>
|
|
</span><span id="L-742"><a href="#L-742"><span class="linenos">742</span></a>
|
|
</span><span id="L-743"><a href="#L-743"><span class="linenos">743</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">ranges</span><span class="p">:</span>
|
|
</span><span id="L-744"><a href="#L-744"><span class="linenos">744</span></a> <span class="k">return</span> <span class="n">expression</span>
|
|
</span><span id="L-745"><a href="#L-745"><span class="linenos">745</span></a>
|
|
</span><span id="L-746"><a href="#L-746"><span class="linenos">746</span></a> <span class="n">ranges</span> <span class="o">=</span> <span class="n">merge_ranges</span><span class="p">(</span><span class="n">ranges</span><span class="p">)</span>
|
|
</span><span id="L-747"><a href="#L-747"><span class="linenos">747</span></a>
|
|
</span><span id="L-748"><a href="#L-748"><span class="linenos">748</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">or_</span><span class="p">(</span><span class="o">*</span><span class="p">[</span><span class="n">_datetrunc_eq_expression</span><span class="p">(</span><span class="n">l</span><span class="p">,</span> <span class="n">drange</span><span class="p">)</span> <span class="k">for</span> <span class="n">drange</span> <span class="ow">in</span> <span class="n">ranges</span><span class="p">],</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span>
|
|
</span><span id="L-749"><a href="#L-749"><span class="linenos">749</span></a>
|
|
</span><span id="L-750"><a href="#L-750"><span class="linenos">750</span></a> <span class="k">return</span> <span class="n">expression</span>
|
|
</span><span id="L-751"><a href="#L-751"><span class="linenos">751</span></a>
|
|
</span><span id="L-752"><a href="#L-752"><span class="linenos">752</span></a>
|
|
</span><span id="L-753"><a href="#L-753"><span class="linenos">753</span></a><span class="c1"># CROSS joins result in an empty table if the right table is empty.</span>
|
|
</span><span id="L-754"><a href="#L-754"><span class="linenos">754</span></a><span class="c1"># So we can only simplify certain types of joins to CROSS.</span>
|
|
</span><span id="L-755"><a href="#L-755"><span class="linenos">755</span></a><span class="c1"># Or in other words, LEFT JOIN x ON TRUE != CROSS JOIN x</span>
|
|
</span><span id="L-756"><a href="#L-756"><span class="linenos">756</span></a><span class="n">JOINS</span> <span class="o">=</span> <span class="p">{</span>
|
|
</span><span id="L-757"><a href="#L-757"><span class="linenos">757</span></a> <span class="p">(</span><span class="s2">""</span><span class="p">,</span> <span class="s2">""</span><span class="p">),</span>
|
|
</span><span id="L-758"><a href="#L-758"><span class="linenos">758</span></a> <span class="p">(</span><span class="s2">""</span><span class="p">,</span> <span class="s2">"INNER"</span><span class="p">),</span>
|
|
</span><span id="L-759"><a href="#L-759"><span class="linenos">759</span></a> <span class="p">(</span><span class="s2">"RIGHT"</span><span class="p">,</span> <span class="s2">""</span><span class="p">),</span>
|
|
</span><span id="L-760"><a href="#L-760"><span class="linenos">760</span></a> <span class="p">(</span><span class="s2">"RIGHT"</span><span class="p">,</span> <span class="s2">"OUTER"</span><span class="p">),</span>
|
|
</span><span id="L-761"><a href="#L-761"><span class="linenos">761</span></a><span class="p">}</span>
|
|
</span><span id="L-762"><a href="#L-762"><span class="linenos">762</span></a>
|
|
</span><span id="L-763"><a href="#L-763"><span class="linenos">763</span></a>
|
|
</span><span id="L-764"><a href="#L-764"><span class="linenos">764</span></a><span class="k">def</span> <span class="nf">remove_where_true</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span>
|
|
</span><span id="L-765"><a href="#L-765"><span class="linenos">765</span></a> <span class="k">for</span> <span class="n">where</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Where</span><span class="p">):</span>
|
|
</span><span id="L-766"><a href="#L-766"><span class="linenos">766</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">where</span><span class="o">.</span><span class="n">this</span><span class="p">):</span>
|
|
</span><span id="L-767"><a href="#L-767"><span class="linenos">767</span></a> <span class="n">where</span><span class="o">.</span><span class="n">parent</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"where"</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span>
|
|
</span><span id="L-768"><a href="#L-768"><span class="linenos">768</span></a> <span class="k">for</span> <span class="n">join</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Join</span><span class="p">):</span>
|
|
</span><span id="L-769"><a href="#L-769"><span class="linenos">769</span></a> <span class="k">if</span> <span class="p">(</span>
|
|
</span><span id="L-770"><a href="#L-770"><span class="linenos">770</span></a> <span class="n">always_true</span><span class="p">(</span><span class="n">join</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"on"</span><span class="p">))</span>
|
|
</span><span id="L-771"><a href="#L-771"><span class="linenos">771</span></a> <span class="ow">and</span> <span class="ow">not</span> <span class="n">join</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"using"</span><span class="p">)</span>
|
|
</span><span id="L-772"><a href="#L-772"><span class="linenos">772</span></a> <span class="ow">and</span> <span class="ow">not</span> <span class="n">join</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"method"</span><span class="p">)</span>
|
|
</span><span id="L-773"><a href="#L-773"><span class="linenos">773</span></a> <span class="ow">and</span> <span class="p">(</span><span class="n">join</span><span class="o">.</span><span class="n">side</span><span class="p">,</span> <span class="n">join</span><span class="o">.</span><span class="n">kind</span><span class="p">)</span> <span class="ow">in</span> <span class="n">JOINS</span>
|
|
</span><span id="L-774"><a href="#L-774"><span class="linenos">774</span></a> <span class="p">):</span>
|
|
</span><span id="L-775"><a href="#L-775"><span class="linenos">775</span></a> <span class="n">join</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"on"</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span>
|
|
</span><span id="L-776"><a href="#L-776"><span class="linenos">776</span></a> <span class="n">join</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"side"</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span>
|
|
</span><span id="L-777"><a href="#L-777"><span class="linenos">777</span></a> <span class="n">join</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"kind"</span><span class="p">,</span> <span class="s2">"CROSS"</span><span class="p">)</span>
|
|
</span><span id="L-778"><a href="#L-778"><span class="linenos">778</span></a>
|
|
</span><span id="L-779"><a href="#L-779"><span class="linenos">779</span></a>
|
|
</span><span id="L-780"><a href="#L-780"><span class="linenos">780</span></a><span class="k">def</span> <span class="nf">always_true</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span>
|
|
</span><span id="L-781"><a href="#L-781"><span class="linenos">781</span></a> <span class="k">return</span> <span class="p">(</span><span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Boolean</span><span class="p">)</span> <span class="ow">and</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">)</span> <span class="ow">or</span> <span class="nb">isinstance</span><span class="p">(</span>
|
|
</span><span id="L-782"><a href="#L-782"><span class="linenos">782</span></a> <span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span>
|
|
</span><span id="L-783"><a href="#L-783"><span class="linenos">783</span></a> <span class="p">)</span>
|
|
</span><span id="L-784"><a href="#L-784"><span class="linenos">784</span></a>
|
|
</span><span id="L-785"><a href="#L-785"><span class="linenos">785</span></a>
|
|
</span><span id="L-786"><a href="#L-786"><span class="linenos">786</span></a><span class="k">def</span> <span class="nf">is_complement</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">):</span>
|
|
</span><span id="L-787"><a href="#L-787"><span class="linenos">787</span></a> <span class="k">return</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Not</span><span class="p">)</span> <span class="ow">and</span> <span class="n">b</span><span class="o">.</span><span class="n">this</span> <span class="o">==</span> <span class="n">a</span>
|
|
</span><span id="L-788"><a href="#L-788"><span class="linenos">788</span></a>
|
|
</span><span id="L-789"><a href="#L-789"><span class="linenos">789</span></a>
|
|
</span><span id="L-790"><a href="#L-790"><span class="linenos">790</span></a><span class="k">def</span> <span class="nf">is_false</span><span class="p">(</span><span class="n">a</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">)</span> <span class="o">-></span> <span class="nb">bool</span><span class="p">:</span>
|
|
</span><span id="L-791"><a href="#L-791"><span class="linenos">791</span></a> <span class="k">return</span> <span class="nb">type</span><span class="p">(</span><span class="n">a</span><span class="p">)</span> <span class="ow">is</span> <span class="n">exp</span><span class="o">.</span><span class="n">Boolean</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">a</span><span class="o">.</span><span class="n">this</span>
|
|
</span><span id="L-792"><a href="#L-792"><span class="linenos">792</span></a>
|
|
</span><span id="L-793"><a href="#L-793"><span class="linenos">793</span></a>
|
|
</span><span id="L-794"><a href="#L-794"><span class="linenos">794</span></a><span class="k">def</span> <span class="nf">is_null</span><span class="p">(</span><span class="n">a</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">)</span> <span class="o">-></span> <span class="nb">bool</span><span class="p">:</span>
|
|
</span><span id="L-795"><a href="#L-795"><span class="linenos">795</span></a> <span class="k">return</span> <span class="nb">type</span><span class="p">(</span><span class="n">a</span><span class="p">)</span> <span class="ow">is</span> <span class="n">exp</span><span class="o">.</span><span class="n">Null</span>
|
|
</span><span id="L-796"><a href="#L-796"><span class="linenos">796</span></a>
|
|
</span><span id="L-797"><a href="#L-797"><span class="linenos">797</span></a>
|
|
</span><span id="L-798"><a href="#L-798"><span class="linenos">798</span></a><span class="k">def</span> <span class="nf">eval_boolean</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">):</span>
|
|
</span><span id="L-799"><a href="#L-799"><span class="linenos">799</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">EQ</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Is</span><span class="p">)):</span>
|
|
</span><span id="L-800"><a href="#L-800"><span class="linenos">800</span></a> <span class="k">return</span> <span class="n">boolean_literal</span><span class="p">(</span><span class="n">a</span> <span class="o">==</span> <span class="n">b</span><span class="p">)</span>
|
|
</span><span id="L-801"><a href="#L-801"><span class="linenos">801</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">NEQ</span><span class="p">):</span>
|
|
</span><span id="L-802"><a href="#L-802"><span class="linenos">802</span></a> <span class="k">return</span> <span class="n">boolean_literal</span><span class="p">(</span><span class="n">a</span> <span class="o">!=</span> <span class="n">b</span><span class="p">)</span>
|
|
</span><span id="L-803"><a href="#L-803"><span class="linenos">803</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">GT</span><span class="p">):</span>
|
|
</span><span id="L-804"><a href="#L-804"><span class="linenos">804</span></a> <span class="k">return</span> <span class="n">boolean_literal</span><span class="p">(</span><span class="n">a</span> <span class="o">></span> <span class="n">b</span><span class="p">)</span>
|
|
</span><span id="L-805"><a href="#L-805"><span class="linenos">805</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">GTE</span><span class="p">):</span>
|
|
</span><span id="L-806"><a href="#L-806"><span class="linenos">806</span></a> <span class="k">return</span> <span class="n">boolean_literal</span><span class="p">(</span><span class="n">a</span> <span class="o">>=</span> <span class="n">b</span><span class="p">)</span>
|
|
</span><span id="L-807"><a href="#L-807"><span class="linenos">807</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">LT</span><span class="p">):</span>
|
|
</span><span id="L-808"><a href="#L-808"><span class="linenos">808</span></a> <span class="k">return</span> <span class="n">boolean_literal</span><span class="p">(</span><span class="n">a</span> <span class="o"><</span> <span class="n">b</span><span class="p">)</span>
|
|
</span><span id="L-809"><a href="#L-809"><span class="linenos">809</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">LTE</span><span class="p">):</span>
|
|
</span><span id="L-810"><a href="#L-810"><span class="linenos">810</span></a> <span class="k">return</span> <span class="n">boolean_literal</span><span class="p">(</span><span class="n">a</span> <span class="o"><=</span> <span class="n">b</span><span class="p">)</span>
|
|
</span><span id="L-811"><a href="#L-811"><span class="linenos">811</span></a> <span class="k">return</span> <span class="kc">None</span>
|
|
</span><span id="L-812"><a href="#L-812"><span class="linenos">812</span></a>
|
|
</span><span id="L-813"><a href="#L-813"><span class="linenos">813</span></a>
|
|
</span><span id="L-814"><a href="#L-814"><span class="linenos">814</span></a><span class="k">def</span> <span class="nf">cast_as_date</span><span class="p">(</span><span class="n">value</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Any</span><span class="p">)</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="n">datetime</span><span class="o">.</span><span class="n">date</span><span class="p">]:</span>
|
|
</span><span id="L-815"><a href="#L-815"><span class="linenos">815</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">value</span><span class="p">,</span> <span class="n">datetime</span><span class="o">.</span><span class="n">datetime</span><span class="p">):</span>
|
|
</span><span id="L-816"><a href="#L-816"><span class="linenos">816</span></a> <span class="k">return</span> <span class="n">value</span><span class="o">.</span><span class="n">date</span><span class="p">()</span>
|
|
</span><span id="L-817"><a href="#L-817"><span class="linenos">817</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">value</span><span class="p">,</span> <span class="n">datetime</span><span class="o">.</span><span class="n">date</span><span class="p">):</span>
|
|
</span><span id="L-818"><a href="#L-818"><span class="linenos">818</span></a> <span class="k">return</span> <span class="n">value</span>
|
|
</span><span id="L-819"><a href="#L-819"><span class="linenos">819</span></a> <span class="k">try</span><span class="p">:</span>
|
|
</span><span id="L-820"><a href="#L-820"><span class="linenos">820</span></a> <span class="k">return</span> <span class="n">datetime</span><span class="o">.</span><span class="n">datetime</span><span class="o">.</span><span class="n">fromisoformat</span><span class="p">(</span><span class="n">value</span><span class="p">)</span><span class="o">.</span><span class="n">date</span><span class="p">()</span>
|
|
</span><span id="L-821"><a href="#L-821"><span class="linenos">821</span></a> <span class="k">except</span> <span class="ne">ValueError</span><span class="p">:</span>
|
|
</span><span id="L-822"><a href="#L-822"><span class="linenos">822</span></a> <span class="k">return</span> <span class="kc">None</span>
|
|
</span><span id="L-823"><a href="#L-823"><span class="linenos">823</span></a>
|
|
</span><span id="L-824"><a href="#L-824"><span class="linenos">824</span></a>
|
|
</span><span id="L-825"><a href="#L-825"><span class="linenos">825</span></a><span class="k">def</span> <span class="nf">cast_as_datetime</span><span class="p">(</span><span class="n">value</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Any</span><span class="p">)</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="n">datetime</span><span class="o">.</span><span class="n">datetime</span><span class="p">]:</span>
|
|
</span><span id="L-826"><a href="#L-826"><span class="linenos">826</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">value</span><span class="p">,</span> <span class="n">datetime</span><span class="o">.</span><span class="n">datetime</span><span class="p">):</span>
|
|
</span><span id="L-827"><a href="#L-827"><span class="linenos">827</span></a> <span class="k">return</span> <span class="n">value</span>
|
|
</span><span id="L-828"><a href="#L-828"><span class="linenos">828</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">value</span><span class="p">,</span> <span class="n">datetime</span><span class="o">.</span><span class="n">date</span><span class="p">):</span>
|
|
</span><span id="L-829"><a href="#L-829"><span class="linenos">829</span></a> <span class="k">return</span> <span class="n">datetime</span><span class="o">.</span><span class="n">datetime</span><span class="p">(</span><span class="n">year</span><span class="o">=</span><span class="n">value</span><span class="o">.</span><span class="n">year</span><span class="p">,</span> <span class="n">month</span><span class="o">=</span><span class="n">value</span><span class="o">.</span><span class="n">month</span><span class="p">,</span> <span class="n">day</span><span class="o">=</span><span class="n">value</span><span class="o">.</span><span class="n">day</span><span class="p">)</span>
|
|
</span><span id="L-830"><a href="#L-830"><span class="linenos">830</span></a> <span class="k">try</span><span class="p">:</span>
|
|
</span><span id="L-831"><a href="#L-831"><span class="linenos">831</span></a> <span class="k">return</span> <span class="n">datetime</span><span class="o">.</span><span class="n">datetime</span><span class="o">.</span><span class="n">fromisoformat</span><span class="p">(</span><span class="n">value</span><span class="p">)</span>
|
|
</span><span id="L-832"><a href="#L-832"><span class="linenos">832</span></a> <span class="k">except</span> <span class="ne">ValueError</span><span class="p">:</span>
|
|
</span><span id="L-833"><a href="#L-833"><span class="linenos">833</span></a> <span class="k">return</span> <span class="kc">None</span>
|
|
</span><span id="L-834"><a href="#L-834"><span class="linenos">834</span></a>
|
|
</span><span id="L-835"><a href="#L-835"><span class="linenos">835</span></a>
|
|
</span><span id="L-836"><a href="#L-836"><span class="linenos">836</span></a><span class="k">def</span> <span class="nf">cast_value</span><span class="p">(</span><span class="n">value</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Any</span><span class="p">,</span> <span class="n">to</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="p">)</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="n">t</span><span class="o">.</span><span class="n">Union</span><span class="p">[</span><span class="n">datetime</span><span class="o">.</span><span class="n">date</span><span class="p">,</span> <span class="n">datetime</span><span class="o">.</span><span class="n">date</span><span class="p">]]:</span>
|
|
</span><span id="L-837"><a href="#L-837"><span class="linenos">837</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">value</span><span class="p">:</span>
|
|
</span><span id="L-838"><a href="#L-838"><span class="linenos">838</span></a> <span class="k">return</span> <span class="kc">None</span>
|
|
</span><span id="L-839"><a href="#L-839"><span class="linenos">839</span></a> <span class="k">if</span> <span class="n">to</span><span class="o">.</span><span class="n">is_type</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATE</span><span class="p">):</span>
|
|
</span><span id="L-840"><a href="#L-840"><span class="linenos">840</span></a> <span class="k">return</span> <span class="n">cast_as_date</span><span class="p">(</span><span class="n">value</span><span class="p">)</span>
|
|
</span><span id="L-841"><a href="#L-841"><span class="linenos">841</span></a> <span class="k">if</span> <span class="n">to</span><span class="o">.</span><span class="n">is_type</span><span class="p">(</span><span class="o">*</span><span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">TEMPORAL_TYPES</span><span class="p">):</span>
|
|
</span><span id="L-842"><a href="#L-842"><span class="linenos">842</span></a> <span class="k">return</span> <span class="n">cast_as_datetime</span><span class="p">(</span><span class="n">value</span><span class="p">)</span>
|
|
</span><span id="L-843"><a href="#L-843"><span class="linenos">843</span></a> <span class="k">return</span> <span class="kc">None</span>
|
|
</span><span id="L-844"><a href="#L-844"><span class="linenos">844</span></a>
|
|
</span><span id="L-845"><a href="#L-845"><span class="linenos">845</span></a>
|
|
</span><span id="L-846"><a href="#L-846"><span class="linenos">846</span></a><span class="k">def</span> <span class="nf">extract_date</span><span class="p">(</span><span class="n">cast</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">)</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="n">t</span><span class="o">.</span><span class="n">Union</span><span class="p">[</span><span class="n">datetime</span><span class="o">.</span><span class="n">date</span><span class="p">,</span> <span class="n">datetime</span><span class="o">.</span><span class="n">date</span><span class="p">]]:</span>
|
|
</span><span id="L-847"><a href="#L-847"><span class="linenos">847</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">cast</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Cast</span><span class="p">):</span>
|
|
</span><span id="L-848"><a href="#L-848"><span class="linenos">848</span></a> <span class="n">to</span> <span class="o">=</span> <span class="n">cast</span><span class="o">.</span><span class="n">to</span>
|
|
</span><span id="L-849"><a href="#L-849"><span class="linenos">849</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">cast</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">TsOrDsToDate</span><span class="p">):</span>
|
|
</span><span id="L-850"><a href="#L-850"><span class="linenos">850</span></a> <span class="n">to</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">build</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATE</span><span class="p">)</span>
|
|
</span><span id="L-851"><a href="#L-851"><span class="linenos">851</span></a> <span class="k">else</span><span class="p">:</span>
|
|
</span><span id="L-852"><a href="#L-852"><span class="linenos">852</span></a> <span class="k">return</span> <span class="kc">None</span>
|
|
</span><span id="L-853"><a href="#L-853"><span class="linenos">853</span></a>
|
|
</span><span id="L-854"><a href="#L-854"><span class="linenos">854</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">cast</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="p">):</span>
|
|
</span><span id="L-855"><a href="#L-855"><span class="linenos">855</span></a> <span class="n">value</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Any</span> <span class="o">=</span> <span class="n">cast</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">name</span>
|
|
</span><span id="L-856"><a href="#L-856"><span class="linenos">856</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">cast</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Cast</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">TsOrDsToDate</span><span class="p">)):</span>
|
|
</span><span id="L-857"><a href="#L-857"><span class="linenos">857</span></a> <span class="n">value</span> <span class="o">=</span> <span class="n">extract_date</span><span class="p">(</span><span class="n">cast</span><span class="o">.</span><span class="n">this</span><span class="p">)</span>
|
|
</span><span id="L-858"><a href="#L-858"><span class="linenos">858</span></a> <span class="k">else</span><span class="p">:</span>
|
|
</span><span id="L-859"><a href="#L-859"><span class="linenos">859</span></a> <span class="k">return</span> <span class="kc">None</span>
|
|
</span><span id="L-860"><a href="#L-860"><span class="linenos">860</span></a> <span class="k">return</span> <span class="n">cast_value</span><span class="p">(</span><span class="n">value</span><span class="p">,</span> <span class="n">to</span><span class="p">)</span>
|
|
</span><span id="L-861"><a href="#L-861"><span class="linenos">861</span></a>
|
|
</span><span id="L-862"><a href="#L-862"><span class="linenos">862</span></a>
|
|
</span><span id="L-863"><a href="#L-863"><span class="linenos">863</span></a><span class="k">def</span> <span class="nf">_is_date_literal</span><span class="p">(</span><span class="n">expression</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">)</span> <span class="o">-></span> <span class="nb">bool</span><span class="p">:</span>
|
|
</span><span id="L-864"><a href="#L-864"><span class="linenos">864</span></a> <span class="k">return</span> <span class="n">extract_date</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span>
|
|
</span><span id="L-865"><a href="#L-865"><span class="linenos">865</span></a>
|
|
</span><span id="L-866"><a href="#L-866"><span class="linenos">866</span></a>
|
|
</span><span id="L-867"><a href="#L-867"><span class="linenos">867</span></a><span class="k">def</span> <span class="nf">extract_interval</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span>
|
|
</span><span id="L-868"><a href="#L-868"><span class="linenos">868</span></a> <span class="n">n</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">name</span><span class="p">)</span>
|
|
</span><span id="L-869"><a href="#L-869"><span class="linenos">869</span></a> <span class="n">unit</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">text</span><span class="p">(</span><span class="s2">"unit"</span><span class="p">)</span><span class="o">.</span><span class="n">lower</span><span class="p">()</span>
|
|
</span><span id="L-870"><a href="#L-870"><span class="linenos">870</span></a>
|
|
</span><span id="L-871"><a href="#L-871"><span class="linenos">871</span></a> <span class="k">try</span><span class="p">:</span>
|
|
</span><span id="L-872"><a href="#L-872"><span class="linenos">872</span></a> <span class="k">return</span> <span class="n">interval</span><span class="p">(</span><span class="n">unit</span><span class="p">,</span> <span class="n">n</span><span class="p">)</span>
|
|
</span><span id="L-873"><a href="#L-873"><span class="linenos">873</span></a> <span class="k">except</span> <span class="p">(</span><span class="n">UnsupportedUnit</span><span class="p">,</span> <span class="ne">ModuleNotFoundError</span><span class="p">):</span>
|
|
</span><span id="L-874"><a href="#L-874"><span class="linenos">874</span></a> <span class="k">return</span> <span class="kc">None</span>
|
|
</span><span id="L-875"><a href="#L-875"><span class="linenos">875</span></a>
|
|
</span><span id="L-876"><a href="#L-876"><span class="linenos">876</span></a>
|
|
</span><span id="L-877"><a href="#L-877"><span class="linenos">877</span></a><span class="k">def</span> <span class="nf">date_literal</span><span class="p">(</span><span class="n">date</span><span class="p">):</span>
|
|
</span><span id="L-878"><a href="#L-878"><span class="linenos">878</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">cast</span><span class="p">(</span>
|
|
</span><span id="L-879"><a href="#L-879"><span class="linenos">879</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="o">.</span><span class="n">string</span><span class="p">(</span><span class="n">date</span><span class="p">),</span>
|
|
</span><span id="L-880"><a href="#L-880"><span class="linenos">880</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATETIME</span>
|
|
</span><span id="L-881"><a href="#L-881"><span class="linenos">881</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">date</span><span class="p">,</span> <span class="n">datetime</span><span class="o">.</span><span class="n">datetime</span><span class="p">)</span>
|
|
</span><span id="L-882"><a href="#L-882"><span class="linenos">882</span></a> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATE</span><span class="p">,</span>
|
|
</span><span id="L-883"><a href="#L-883"><span class="linenos">883</span></a> <span class="p">)</span>
|
|
</span><span id="L-884"><a href="#L-884"><span class="linenos">884</span></a>
|
|
</span><span id="L-885"><a href="#L-885"><span class="linenos">885</span></a>
|
|
</span><span id="L-886"><a href="#L-886"><span class="linenos">886</span></a><span class="k">def</span> <span class="nf">interval</span><span class="p">(</span><span class="n">unit</span><span class="p">:</span> <span class="nb">str</span><span class="p">,</span> <span class="n">n</span><span class="p">:</span> <span class="nb">int</span> <span class="o">=</span> <span class="mi">1</span><span class="p">):</span>
|
|
</span><span id="L-887"><a href="#L-887"><span class="linenos">887</span></a> <span class="kn">from</span> <span class="nn">dateutil.relativedelta</span> <span class="kn">import</span> <span class="n">relativedelta</span>
|
|
</span><span id="L-888"><a href="#L-888"><span class="linenos">888</span></a>
|
|
</span><span id="L-889"><a href="#L-889"><span class="linenos">889</span></a> <span class="k">if</span> <span class="n">unit</span> <span class="o">==</span> <span class="s2">"year"</span><span class="p">:</span>
|
|
</span><span id="L-890"><a href="#L-890"><span class="linenos">890</span></a> <span class="k">return</span> <span class="n">relativedelta</span><span class="p">(</span><span class="n">years</span><span class="o">=</span><span class="mi">1</span> <span class="o">*</span> <span class="n">n</span><span class="p">)</span>
|
|
</span><span id="L-891"><a href="#L-891"><span class="linenos">891</span></a> <span class="k">if</span> <span class="n">unit</span> <span class="o">==</span> <span class="s2">"quarter"</span><span class="p">:</span>
|
|
</span><span id="L-892"><a href="#L-892"><span class="linenos">892</span></a> <span class="k">return</span> <span class="n">relativedelta</span><span class="p">(</span><span class="n">months</span><span class="o">=</span><span class="mi">3</span> <span class="o">*</span> <span class="n">n</span><span class="p">)</span>
|
|
</span><span id="L-893"><a href="#L-893"><span class="linenos">893</span></a> <span class="k">if</span> <span class="n">unit</span> <span class="o">==</span> <span class="s2">"month"</span><span class="p">:</span>
|
|
</span><span id="L-894"><a href="#L-894"><span class="linenos">894</span></a> <span class="k">return</span> <span class="n">relativedelta</span><span class="p">(</span><span class="n">months</span><span class="o">=</span><span class="mi">1</span> <span class="o">*</span> <span class="n">n</span><span class="p">)</span>
|
|
</span><span id="L-895"><a href="#L-895"><span class="linenos">895</span></a> <span class="k">if</span> <span class="n">unit</span> <span class="o">==</span> <span class="s2">"week"</span><span class="p">:</span>
|
|
</span><span id="L-896"><a href="#L-896"><span class="linenos">896</span></a> <span class="k">return</span> <span class="n">relativedelta</span><span class="p">(</span><span class="n">weeks</span><span class="o">=</span><span class="mi">1</span> <span class="o">*</span> <span class="n">n</span><span class="p">)</span>
|
|
</span><span id="L-897"><a href="#L-897"><span class="linenos">897</span></a> <span class="k">if</span> <span class="n">unit</span> <span class="o">==</span> <span class="s2">"day"</span><span class="p">:</span>
|
|
</span><span id="L-898"><a href="#L-898"><span class="linenos">898</span></a> <span class="k">return</span> <span class="n">relativedelta</span><span class="p">(</span><span class="n">days</span><span class="o">=</span><span class="mi">1</span> <span class="o">*</span> <span class="n">n</span><span class="p">)</span>
|
|
</span><span id="L-899"><a href="#L-899"><span class="linenos">899</span></a> <span class="k">if</span> <span class="n">unit</span> <span class="o">==</span> <span class="s2">"hour"</span><span class="p">:</span>
|
|
</span><span id="L-900"><a href="#L-900"><span class="linenos">900</span></a> <span class="k">return</span> <span class="n">relativedelta</span><span class="p">(</span><span class="n">hours</span><span class="o">=</span><span class="mi">1</span> <span class="o">*</span> <span class="n">n</span><span class="p">)</span>
|
|
</span><span id="L-901"><a href="#L-901"><span class="linenos">901</span></a> <span class="k">if</span> <span class="n">unit</span> <span class="o">==</span> <span class="s2">"minute"</span><span class="p">:</span>
|
|
</span><span id="L-902"><a href="#L-902"><span class="linenos">902</span></a> <span class="k">return</span> <span class="n">relativedelta</span><span class="p">(</span><span class="n">minutes</span><span class="o">=</span><span class="mi">1</span> <span class="o">*</span> <span class="n">n</span><span class="p">)</span>
|
|
</span><span id="L-903"><a href="#L-903"><span class="linenos">903</span></a> <span class="k">if</span> <span class="n">unit</span> <span class="o">==</span> <span class="s2">"second"</span><span class="p">:</span>
|
|
</span><span id="L-904"><a href="#L-904"><span class="linenos">904</span></a> <span class="k">return</span> <span class="n">relativedelta</span><span class="p">(</span><span class="n">seconds</span><span class="o">=</span><span class="mi">1</span> <span class="o">*</span> <span class="n">n</span><span class="p">)</span>
|
|
</span><span id="L-905"><a href="#L-905"><span class="linenos">905</span></a>
|
|
</span><span id="L-906"><a href="#L-906"><span class="linenos">906</span></a> <span class="k">raise</span> <span class="n">UnsupportedUnit</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Unsupported unit: </span><span class="si">{</span><span class="n">unit</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span>
|
|
</span><span id="L-907"><a href="#L-907"><span class="linenos">907</span></a>
|
|
</span><span id="L-908"><a href="#L-908"><span class="linenos">908</span></a>
|
|
</span><span id="L-909"><a href="#L-909"><span class="linenos">909</span></a><span class="k">def</span> <span class="nf">date_floor</span><span class="p">(</span><span class="n">d</span><span class="p">:</span> <span class="n">datetime</span><span class="o">.</span><span class="n">date</span><span class="p">,</span> <span class="n">unit</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-></span> <span class="n">datetime</span><span class="o">.</span><span class="n">date</span><span class="p">:</span>
|
|
</span><span id="L-910"><a href="#L-910"><span class="linenos">910</span></a> <span class="k">if</span> <span class="n">unit</span> <span class="o">==</span> <span class="s2">"year"</span><span class="p">:</span>
|
|
</span><span id="L-911"><a href="#L-911"><span class="linenos">911</span></a> <span class="k">return</span> <span class="n">d</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">month</span><span class="o">=</span><span class="mi">1</span><span class="p">,</span> <span class="n">day</span><span class="o">=</span><span class="mi">1</span><span class="p">)</span>
|
|
</span><span id="L-912"><a href="#L-912"><span class="linenos">912</span></a> <span class="k">if</span> <span class="n">unit</span> <span class="o">==</span> <span class="s2">"quarter"</span><span class="p">:</span>
|
|
</span><span id="L-913"><a href="#L-913"><span class="linenos">913</span></a> <span class="k">if</span> <span class="n">d</span><span class="o">.</span><span class="n">month</span> <span class="o"><=</span> <span class="mi">3</span><span class="p">:</span>
|
|
</span><span id="L-914"><a href="#L-914"><span class="linenos">914</span></a> <span class="k">return</span> <span class="n">d</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">month</span><span class="o">=</span><span class="mi">1</span><span class="p">,</span> <span class="n">day</span><span class="o">=</span><span class="mi">1</span><span class="p">)</span>
|
|
</span><span id="L-915"><a href="#L-915"><span class="linenos">915</span></a> <span class="k">elif</span> <span class="n">d</span><span class="o">.</span><span class="n">month</span> <span class="o"><=</span> <span class="mi">6</span><span class="p">:</span>
|
|
</span><span id="L-916"><a href="#L-916"><span class="linenos">916</span></a> <span class="k">return</span> <span class="n">d</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">month</span><span class="o">=</span><span class="mi">4</span><span class="p">,</span> <span class="n">day</span><span class="o">=</span><span class="mi">1</span><span class="p">)</span>
|
|
</span><span id="L-917"><a href="#L-917"><span class="linenos">917</span></a> <span class="k">elif</span> <span class="n">d</span><span class="o">.</span><span class="n">month</span> <span class="o"><=</span> <span class="mi">9</span><span class="p">:</span>
|
|
</span><span id="L-918"><a href="#L-918"><span class="linenos">918</span></a> <span class="k">return</span> <span class="n">d</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">month</span><span class="o">=</span><span class="mi">7</span><span class="p">,</span> <span class="n">day</span><span class="o">=</span><span class="mi">1</span><span class="p">)</span>
|
|
</span><span id="L-919"><a href="#L-919"><span class="linenos">919</span></a> <span class="k">else</span><span class="p">:</span>
|
|
</span><span id="L-920"><a href="#L-920"><span class="linenos">920</span></a> <span class="k">return</span> <span class="n">d</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">month</span><span class="o">=</span><span class="mi">10</span><span class="p">,</span> <span class="n">day</span><span class="o">=</span><span class="mi">1</span><span class="p">)</span>
|
|
</span><span id="L-921"><a href="#L-921"><span class="linenos">921</span></a> <span class="k">if</span> <span class="n">unit</span> <span class="o">==</span> <span class="s2">"month"</span><span class="p">:</span>
|
|
</span><span id="L-922"><a href="#L-922"><span class="linenos">922</span></a> <span class="k">return</span> <span class="n">d</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">month</span><span class="o">=</span><span class="n">d</span><span class="o">.</span><span class="n">month</span><span class="p">,</span> <span class="n">day</span><span class="o">=</span><span class="mi">1</span><span class="p">)</span>
|
|
</span><span id="L-923"><a href="#L-923"><span class="linenos">923</span></a> <span class="k">if</span> <span class="n">unit</span> <span class="o">==</span> <span class="s2">"week"</span><span class="p">:</span>
|
|
</span><span id="L-924"><a href="#L-924"><span class="linenos">924</span></a> <span class="c1"># Assuming week starts on Monday (0) and ends on Sunday (6)</span>
|
|
</span><span id="L-925"><a href="#L-925"><span class="linenos">925</span></a> <span class="k">return</span> <span class="n">d</span> <span class="o">-</span> <span class="n">datetime</span><span class="o">.</span><span class="n">timedelta</span><span class="p">(</span><span class="n">days</span><span class="o">=</span><span class="n">d</span><span class="o">.</span><span class="n">weekday</span><span class="p">())</span>
|
|
</span><span id="L-926"><a href="#L-926"><span class="linenos">926</span></a> <span class="k">if</span> <span class="n">unit</span> <span class="o">==</span> <span class="s2">"day"</span><span class="p">:</span>
|
|
</span><span id="L-927"><a href="#L-927"><span class="linenos">927</span></a> <span class="k">return</span> <span class="n">d</span>
|
|
</span><span id="L-928"><a href="#L-928"><span class="linenos">928</span></a>
|
|
</span><span id="L-929"><a href="#L-929"><span class="linenos">929</span></a> <span class="k">raise</span> <span class="n">UnsupportedUnit</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Unsupported unit: </span><span class="si">{</span><span class="n">unit</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span>
|
|
</span><span id="L-930"><a href="#L-930"><span class="linenos">930</span></a>
|
|
</span><span id="L-931"><a href="#L-931"><span class="linenos">931</span></a>
|
|
</span><span id="L-932"><a href="#L-932"><span class="linenos">932</span></a><span class="k">def</span> <span class="nf">date_ceil</span><span class="p">(</span><span class="n">d</span><span class="p">:</span> <span class="n">datetime</span><span class="o">.</span><span class="n">date</span><span class="p">,</span> <span class="n">unit</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-></span> <span class="n">datetime</span><span class="o">.</span><span class="n">date</span><span class="p">:</span>
|
|
</span><span id="L-933"><a href="#L-933"><span class="linenos">933</span></a> <span class="n">floor</span> <span class="o">=</span> <span class="n">date_floor</span><span class="p">(</span><span class="n">d</span><span class="p">,</span> <span class="n">unit</span><span class="p">)</span>
|
|
</span><span id="L-934"><a href="#L-934"><span class="linenos">934</span></a>
|
|
</span><span id="L-935"><a href="#L-935"><span class="linenos">935</span></a> <span class="k">if</span> <span class="n">floor</span> <span class="o">==</span> <span class="n">d</span><span class="p">:</span>
|
|
</span><span id="L-936"><a href="#L-936"><span class="linenos">936</span></a> <span class="k">return</span> <span class="n">d</span>
|
|
</span><span id="L-937"><a href="#L-937"><span class="linenos">937</span></a>
|
|
</span><span id="L-938"><a href="#L-938"><span class="linenos">938</span></a> <span class="k">return</span> <span class="n">floor</span> <span class="o">+</span> <span class="n">interval</span><span class="p">(</span><span class="n">unit</span><span class="p">)</span>
|
|
</span><span id="L-939"><a href="#L-939"><span class="linenos">939</span></a>
|
|
</span><span id="L-940"><a href="#L-940"><span class="linenos">940</span></a>
|
|
</span><span id="L-941"><a href="#L-941"><span class="linenos">941</span></a><span class="k">def</span> <span class="nf">boolean_literal</span><span class="p">(</span><span class="n">condition</span><span class="p">):</span>
|
|
</span><span id="L-942"><a href="#L-942"><span class="linenos">942</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> <span class="k">if</span> <span class="n">condition</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span>
|
|
</span><span id="L-943"><a href="#L-943"><span class="linenos">943</span></a>
|
|
</span><span id="L-944"><a href="#L-944"><span class="linenos">944</span></a>
|
|
</span><span id="L-945"><a href="#L-945"><span class="linenos">945</span></a><span class="k">def</span> <span class="nf">_flat_simplify</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">simplifier</span><span class="p">,</span> <span class="n">root</span><span class="o">=</span><span class="kc">True</span><span class="p">):</span>
|
|
</span><span id="L-946"><a href="#L-946"><span class="linenos">946</span></a> <span class="k">if</span> <span class="n">root</span> <span class="ow">or</span> <span class="ow">not</span> <span class="n">expression</span><span class="o">.</span><span class="n">same_parent</span><span class="p">:</span>
|
|
</span><span id="L-947"><a href="#L-947"><span class="linenos">947</span></a> <span class="n">operands</span> <span class="o">=</span> <span class="p">[]</span>
|
|
</span><span id="L-948"><a href="#L-948"><span class="linenos">948</span></a> <span class="n">queue</span> <span class="o">=</span> <span class="n">deque</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">flatten</span><span class="p">(</span><span class="n">unnest</span><span class="o">=</span><span class="kc">False</span><span class="p">))</span>
|
|
</span><span id="L-949"><a href="#L-949"><span class="linenos">949</span></a> <span class="n">size</span> <span class="o">=</span> <span class="nb">len</span><span class="p">(</span><span class="n">queue</span><span class="p">)</span>
|
|
</span><span id="L-950"><a href="#L-950"><span class="linenos">950</span></a>
|
|
</span><span id="L-951"><a href="#L-951"><span class="linenos">951</span></a> <span class="k">while</span> <span class="n">queue</span><span class="p">:</span>
|
|
</span><span id="L-952"><a href="#L-952"><span class="linenos">952</span></a> <span class="n">a</span> <span class="o">=</span> <span class="n">queue</span><span class="o">.</span><span class="n">popleft</span><span class="p">()</span>
|
|
</span><span id="L-953"><a href="#L-953"><span class="linenos">953</span></a>
|
|
</span><span id="L-954"><a href="#L-954"><span class="linenos">954</span></a> <span class="k">for</span> <span class="n">b</span> <span class="ow">in</span> <span class="n">queue</span><span class="p">:</span>
|
|
</span><span id="L-955"><a href="#L-955"><span class="linenos">955</span></a> <span class="n">result</span> <span class="o">=</span> <span class="n">simplifier</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">)</span>
|
|
</span><span id="L-956"><a href="#L-956"><span class="linenos">956</span></a>
|
|
</span><span id="L-957"><a href="#L-957"><span class="linenos">957</span></a> <span class="k">if</span> <span class="n">result</span> <span class="ow">and</span> <span class="n">result</span> <span class="ow">is</span> <span class="ow">not</span> <span class="n">expression</span><span class="p">:</span>
|
|
</span><span id="L-958"><a href="#L-958"><span class="linenos">958</span></a> <span class="n">queue</span><span class="o">.</span><span class="n">remove</span><span class="p">(</span><span class="n">b</span><span class="p">)</span>
|
|
</span><span id="L-959"><a href="#L-959"><span class="linenos">959</span></a> <span class="n">queue</span><span class="o">.</span><span class="n">appendleft</span><span class="p">(</span><span class="n">result</span><span class="p">)</span>
|
|
</span><span id="L-960"><a href="#L-960"><span class="linenos">960</span></a> <span class="k">break</span>
|
|
</span><span id="L-961"><a href="#L-961"><span class="linenos">961</span></a> <span class="k">else</span><span class="p">:</span>
|
|
</span><span id="L-962"><a href="#L-962"><span class="linenos">962</span></a> <span class="n">operands</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">a</span><span class="p">)</span>
|
|
</span><span id="L-963"><a href="#L-963"><span class="linenos">963</span></a>
|
|
</span><span id="L-964"><a href="#L-964"><span class="linenos">964</span></a> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">operands</span><span class="p">)</span> <span class="o"><</span> <span class="n">size</span><span class="p">:</span>
|
|
</span><span id="L-965"><a href="#L-965"><span class="linenos">965</span></a> <span class="k">return</span> <span class="n">functools</span><span class="o">.</span><span class="n">reduce</span><span class="p">(</span>
|
|
</span><span id="L-966"><a href="#L-966"><span class="linenos">966</span></a> <span class="k">lambda</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">:</span> <span class="n">expression</span><span class="o">.</span><span class="vm">__class__</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">a</span><span class="p">,</span> <span class="n">expression</span><span class="o">=</span><span class="n">b</span><span class="p">),</span> <span class="n">operands</span>
|
|
</span><span id="L-967"><a href="#L-967"><span class="linenos">967</span></a> <span class="p">)</span>
|
|
</span><span id="L-968"><a href="#L-968"><span class="linenos">968</span></a> <span class="k">return</span> <span class="n">expression</span>
|
|
</span></pre></div>
|
|
|
|
|
|
</section>
|
|
<section id="FINAL">
|
|
<div class="attr variable">
|
|
<span class="name">FINAL</span> =
|
|
<span class="default_value">'final'</span>
|
|
|
|
|
|
</div>
|
|
<a class="headerlink" href="#FINAL"></a>
|
|
|
|
|
|
|
|
</section>
|
|
<section id="UnsupportedUnit">
|
|
<input id="UnsupportedUnit-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1">
|
|
<div class="attr class">
|
|
|
|
<span class="def">class</span>
|
|
<span class="name">UnsupportedUnit</span><wbr>(<span class="base">builtins.Exception</span>):
|
|
|
|
<label class="view-source-button" for="UnsupportedUnit-view-source"><span>View Source</span></label>
|
|
|
|
</div>
|
|
<a class="headerlink" href="#UnsupportedUnit"></a>
|
|
<div class="pdoc-code codehilite"><pre><span></span><span id="UnsupportedUnit-17"><a href="#UnsupportedUnit-17"><span class="linenos">17</span></a><span class="k">class</span> <span class="nc">UnsupportedUnit</span><span class="p">(</span><span class="ne">Exception</span><span class="p">):</span>
|
|
</span><span id="UnsupportedUnit-18"><a href="#UnsupportedUnit-18"><span class="linenos">18</span></a> <span class="k">pass</span>
|
|
</span></pre></div>
|
|
|
|
|
|
<div class="docstring"><p>Common base class for all non-exit exceptions.</p>
|
|
</div>
|
|
|
|
|
|
<div class="inherited">
|
|
<h5>Inherited Members</h5>
|
|
<dl>
|
|
<div><dt>builtins.Exception</dt>
|
|
<dd id="UnsupportedUnit.__init__" class="function">Exception</dd>
|
|
|
|
</div>
|
|
<div><dt>builtins.BaseException</dt>
|
|
<dd id="UnsupportedUnit.with_traceback" class="function">with_traceback</dd>
|
|
<dd id="UnsupportedUnit.args" class="variable">args</dd>
|
|
|
|
</div>
|
|
</dl>
|
|
</div>
|
|
</section>
|
|
<section id="simplify">
|
|
<input id="simplify-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1">
|
|
<div class="attr function">
|
|
|
|
<span class="def">def</span>
|
|
<span class="name">simplify</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">expression</span></span><span class="return-annotation">):</span></span>
|
|
|
|
<label class="view-source-button" for="simplify-view-source"><span>View Source</span></label>
|
|
|
|
</div>
|
|
<a class="headerlink" href="#simplify"></a>
|
|
<div class="pdoc-code codehilite"><pre><span></span><span id="simplify-21"><a href="#simplify-21"><span class="linenos">21</span></a><span class="k">def</span> <span class="nf">simplify</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span>
|
|
</span><span id="simplify-22"><a href="#simplify-22"><span class="linenos">22</span></a><span class="w"> </span><span class="sd">"""</span>
|
|
</span><span id="simplify-23"><a href="#simplify-23"><span class="linenos">23</span></a><span class="sd"> Rewrite sqlglot AST to simplify expressions.</span>
|
|
</span><span id="simplify-24"><a href="#simplify-24"><span class="linenos">24</span></a>
|
|
</span><span id="simplify-25"><a href="#simplify-25"><span class="linenos">25</span></a><span class="sd"> Example:</span>
|
|
</span><span id="simplify-26"><a href="#simplify-26"><span class="linenos">26</span></a><span class="sd"> >>> import sqlglot</span>
|
|
</span><span id="simplify-27"><a href="#simplify-27"><span class="linenos">27</span></a><span class="sd"> >>> expression = sqlglot.parse_one("TRUE AND TRUE")</span>
|
|
</span><span id="simplify-28"><a href="#simplify-28"><span class="linenos">28</span></a><span class="sd"> >>> simplify(expression).sql()</span>
|
|
</span><span id="simplify-29"><a href="#simplify-29"><span class="linenos">29</span></a><span class="sd"> 'TRUE'</span>
|
|
</span><span id="simplify-30"><a href="#simplify-30"><span class="linenos">30</span></a>
|
|
</span><span id="simplify-31"><a href="#simplify-31"><span class="linenos">31</span></a><span class="sd"> Args:</span>
|
|
</span><span id="simplify-32"><a href="#simplify-32"><span class="linenos">32</span></a><span class="sd"> expression (sqlglot.Expression): expression to simplify</span>
|
|
</span><span id="simplify-33"><a href="#simplify-33"><span class="linenos">33</span></a><span class="sd"> Returns:</span>
|
|
</span><span id="simplify-34"><a href="#simplify-34"><span class="linenos">34</span></a><span class="sd"> sqlglot.Expression: simplified expression</span>
|
|
</span><span id="simplify-35"><a href="#simplify-35"><span class="linenos">35</span></a><span class="sd"> """</span>
|
|
</span><span id="simplify-36"><a href="#simplify-36"><span class="linenos">36</span></a>
|
|
</span><span id="simplify-37"><a href="#simplify-37"><span class="linenos">37</span></a> <span class="n">generate</span> <span class="o">=</span> <span class="n">cached_generator</span><span class="p">()</span>
|
|
</span><span id="simplify-38"><a href="#simplify-38"><span class="linenos">38</span></a>
|
|
</span><span id="simplify-39"><a href="#simplify-39"><span class="linenos">39</span></a> <span class="c1"># group by expressions cannot be simplified, for example</span>
|
|
</span><span id="simplify-40"><a href="#simplify-40"><span class="linenos">40</span></a> <span class="c1"># select x + 1 + 1 FROM y GROUP BY x + 1 + 1</span>
|
|
</span><span id="simplify-41"><a href="#simplify-41"><span class="linenos">41</span></a> <span class="c1"># the projection must exactly match the group by key</span>
|
|
</span><span id="simplify-42"><a href="#simplify-42"><span class="linenos">42</span></a> <span class="k">for</span> <span class="n">group</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Group</span><span class="p">):</span>
|
|
</span><span id="simplify-43"><a href="#simplify-43"><span class="linenos">43</span></a> <span class="n">select</span> <span class="o">=</span> <span class="n">group</span><span class="o">.</span><span class="n">parent</span>
|
|
</span><span id="simplify-44"><a href="#simplify-44"><span class="linenos">44</span></a> <span class="n">groups</span> <span class="o">=</span> <span class="nb">set</span><span class="p">(</span><span class="n">group</span><span class="o">.</span><span class="n">expressions</span><span class="p">)</span>
|
|
</span><span id="simplify-45"><a href="#simplify-45"><span class="linenos">45</span></a> <span class="n">group</span><span class="o">.</span><span class="n">meta</span><span class="p">[</span><span class="n">FINAL</span><span class="p">]</span> <span class="o">=</span> <span class="kc">True</span>
|
|
</span><span id="simplify-46"><a href="#simplify-46"><span class="linenos">46</span></a>
|
|
</span><span id="simplify-47"><a href="#simplify-47"><span class="linenos">47</span></a> <span class="k">for</span> <span class="n">e</span> <span class="ow">in</span> <span class="n">select</span><span class="o">.</span><span class="n">selects</span><span class="p">:</span>
|
|
</span><span id="simplify-48"><a href="#simplify-48"><span class="linenos">48</span></a> <span class="k">for</span> <span class="n">node</span><span class="p">,</span> <span class="o">*</span><span class="n">_</span> <span class="ow">in</span> <span class="n">e</span><span class="o">.</span><span class="n">walk</span><span class="p">():</span>
|
|
</span><span id="simplify-49"><a href="#simplify-49"><span class="linenos">49</span></a> <span class="k">if</span> <span class="n">node</span> <span class="ow">in</span> <span class="n">groups</span><span class="p">:</span>
|
|
</span><span id="simplify-50"><a href="#simplify-50"><span class="linenos">50</span></a> <span class="n">e</span><span class="o">.</span><span class="n">meta</span><span class="p">[</span><span class="n">FINAL</span><span class="p">]</span> <span class="o">=</span> <span class="kc">True</span>
|
|
</span><span id="simplify-51"><a href="#simplify-51"><span class="linenos">51</span></a> <span class="k">break</span>
|
|
</span><span id="simplify-52"><a href="#simplify-52"><span class="linenos">52</span></a>
|
|
</span><span id="simplify-53"><a href="#simplify-53"><span class="linenos">53</span></a> <span class="n">having</span> <span class="o">=</span> <span class="n">select</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"having"</span><span class="p">)</span>
|
|
</span><span id="simplify-54"><a href="#simplify-54"><span class="linenos">54</span></a> <span class="k">if</span> <span class="n">having</span><span class="p">:</span>
|
|
</span><span id="simplify-55"><a href="#simplify-55"><span class="linenos">55</span></a> <span class="k">for</span> <span class="n">node</span><span class="p">,</span> <span class="o">*</span><span class="n">_</span> <span class="ow">in</span> <span class="n">having</span><span class="o">.</span><span class="n">walk</span><span class="p">():</span>
|
|
</span><span id="simplify-56"><a href="#simplify-56"><span class="linenos">56</span></a> <span class="k">if</span> <span class="n">node</span> <span class="ow">in</span> <span class="n">groups</span><span class="p">:</span>
|
|
</span><span id="simplify-57"><a href="#simplify-57"><span class="linenos">57</span></a> <span class="n">having</span><span class="o">.</span><span class="n">meta</span><span class="p">[</span><span class="n">FINAL</span><span class="p">]</span> <span class="o">=</span> <span class="kc">True</span>
|
|
</span><span id="simplify-58"><a href="#simplify-58"><span class="linenos">58</span></a> <span class="k">break</span>
|
|
</span><span id="simplify-59"><a href="#simplify-59"><span class="linenos">59</span></a>
|
|
</span><span id="simplify-60"><a href="#simplify-60"><span class="linenos">60</span></a> <span class="k">def</span> <span class="nf">_simplify</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">root</span><span class="o">=</span><span class="kc">True</span><span class="p">):</span>
|
|
</span><span id="simplify-61"><a href="#simplify-61"><span class="linenos">61</span></a> <span class="k">if</span> <span class="n">expression</span><span class="o">.</span><span class="n">meta</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">FINAL</span><span class="p">):</span>
|
|
</span><span id="simplify-62"><a href="#simplify-62"><span class="linenos">62</span></a> <span class="k">return</span> <span class="n">expression</span>
|
|
</span><span id="simplify-63"><a href="#simplify-63"><span class="linenos">63</span></a>
|
|
</span><span id="simplify-64"><a href="#simplify-64"><span class="linenos">64</span></a> <span class="c1"># Pre-order transformations</span>
|
|
</span><span id="simplify-65"><a href="#simplify-65"><span class="linenos">65</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">expression</span>
|
|
</span><span id="simplify-66"><a href="#simplify-66"><span class="linenos">66</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">rewrite_between</span><span class="p">(</span><span class="n">node</span><span class="p">)</span>
|
|
</span><span id="simplify-67"><a href="#simplify-67"><span class="linenos">67</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">uniq_sort</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">generate</span><span class="p">,</span> <span class="n">root</span><span class="p">)</span>
|
|
</span><span id="simplify-68"><a href="#simplify-68"><span class="linenos">68</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">absorb_and_eliminate</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">root</span><span class="p">)</span>
|
|
</span><span id="simplify-69"><a href="#simplify-69"><span class="linenos">69</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">simplify_concat</span><span class="p">(</span><span class="n">node</span><span class="p">)</span>
|
|
</span><span id="simplify-70"><a href="#simplify-70"><span class="linenos">70</span></a>
|
|
</span><span id="simplify-71"><a href="#simplify-71"><span class="linenos">71</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">replace_children</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="k">lambda</span> <span class="n">e</span><span class="p">:</span> <span class="n">_simplify</span><span class="p">(</span><span class="n">e</span><span class="p">,</span> <span class="kc">False</span><span class="p">))</span>
|
|
</span><span id="simplify-72"><a href="#simplify-72"><span class="linenos">72</span></a>
|
|
</span><span id="simplify-73"><a href="#simplify-73"><span class="linenos">73</span></a> <span class="c1"># Post-order transformations</span>
|
|
</span><span id="simplify-74"><a href="#simplify-74"><span class="linenos">74</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">simplify_not</span><span class="p">(</span><span class="n">node</span><span class="p">)</span>
|
|
</span><span id="simplify-75"><a href="#simplify-75"><span class="linenos">75</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">flatten</span><span class="p">(</span><span class="n">node</span><span class="p">)</span>
|
|
</span><span id="simplify-76"><a href="#simplify-76"><span class="linenos">76</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">simplify_connectors</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">root</span><span class="p">)</span>
|
|
</span><span id="simplify-77"><a href="#simplify-77"><span class="linenos">77</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">remove_compliments</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">root</span><span class="p">)</span>
|
|
</span><span id="simplify-78"><a href="#simplify-78"><span class="linenos">78</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">simplify_coalesce</span><span class="p">(</span><span class="n">node</span><span class="p">)</span>
|
|
</span><span id="simplify-79"><a href="#simplify-79"><span class="linenos">79</span></a> <span class="n">node</span><span class="o">.</span><span class="n">parent</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">parent</span>
|
|
</span><span id="simplify-80"><a href="#simplify-80"><span class="linenos">80</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">simplify_literals</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">root</span><span class="p">)</span>
|
|
</span><span id="simplify-81"><a href="#simplify-81"><span class="linenos">81</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">simplify_equality</span><span class="p">(</span><span class="n">node</span><span class="p">)</span>
|
|
</span><span id="simplify-82"><a href="#simplify-82"><span class="linenos">82</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">simplify_parens</span><span class="p">(</span><span class="n">node</span><span class="p">)</span>
|
|
</span><span id="simplify-83"><a href="#simplify-83"><span class="linenos">83</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">simplify_datetrunc_predicate</span><span class="p">(</span><span class="n">node</span><span class="p">)</span>
|
|
</span><span id="simplify-84"><a href="#simplify-84"><span class="linenos">84</span></a>
|
|
</span><span id="simplify-85"><a href="#simplify-85"><span class="linenos">85</span></a> <span class="k">if</span> <span class="n">root</span><span class="p">:</span>
|
|
</span><span id="simplify-86"><a href="#simplify-86"><span class="linenos">86</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">node</span><span class="p">)</span>
|
|
</span><span id="simplify-87"><a href="#simplify-87"><span class="linenos">87</span></a>
|
|
</span><span id="simplify-88"><a href="#simplify-88"><span class="linenos">88</span></a> <span class="k">return</span> <span class="n">node</span>
|
|
</span><span id="simplify-89"><a href="#simplify-89"><span class="linenos">89</span></a>
|
|
</span><span id="simplify-90"><a href="#simplify-90"><span class="linenos">90</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">while_changing</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">_simplify</span><span class="p">)</span>
|
|
</span><span id="simplify-91"><a href="#simplify-91"><span class="linenos">91</span></a> <span class="n">remove_where_true</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span>
|
|
</span><span id="simplify-92"><a href="#simplify-92"><span class="linenos">92</span></a> <span class="k">return</span> <span class="n">expression</span>
|
|
</span></pre></div>
|
|
|
|
|
|
<div class="docstring"><p>Rewrite sqlglot AST to simplify expressions.</p>
|
|
|
|
<h6 id="example">Example:</h6>
|
|
|
|
<blockquote>
|
|
<div class="pdoc-code codehilite">
|
|
<pre><span></span><code><span class="gp">>>> </span><span class="kn">import</span> <span class="nn">sqlglot</span>
|
|
<span class="gp">>>> </span><span class="n">expression</span> <span class="o">=</span> <span class="n"><a href="../../sqlglot.html#parse_one">sqlglot.parse_one</a></span><span class="p">(</span><span class="s2">"TRUE AND TRUE"</span><span class="p">)</span>
|
|
<span class="gp">>>> </span><span class="n">simplify</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span><span class="o">.</span><span class="n">sql</span><span class="p">()</span>
|
|
<span class="go">'TRUE'</span>
|
|
</code></pre>
|
|
</div>
|
|
</blockquote>
|
|
|
|
<h6 id="arguments">Arguments:</h6>
|
|
|
|
<ul>
|
|
<li><strong>expression (sqlglot.Expression):</strong> expression to simplify</li>
|
|
</ul>
|
|
|
|
<h6 id="returns">Returns:</h6>
|
|
|
|
<blockquote>
|
|
<p>sqlglot.Expression: simplified expression</p>
|
|
</blockquote>
|
|
</div>
|
|
|
|
|
|
</section>
|
|
<section id="catch">
|
|
<input id="catch-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1">
|
|
<div class="attr function">
|
|
|
|
<span class="def">def</span>
|
|
<span class="name">catch</span><span class="signature pdoc-code condensed">(<span class="param"><span class="o">*</span><span class="n">exceptions</span></span><span class="return-annotation">):</span></span>
|
|
|
|
<label class="view-source-button" for="catch-view-source"><span>View Source</span></label>
|
|
|
|
</div>
|
|
<a class="headerlink" href="#catch"></a>
|
|
<div class="pdoc-code codehilite"><pre><span></span><span id="catch-95"><a href="#catch-95"><span class="linenos"> 95</span></a><span class="k">def</span> <span class="nf">catch</span><span class="p">(</span><span class="o">*</span><span class="n">exceptions</span><span class="p">):</span>
|
|
</span><span id="catch-96"><a href="#catch-96"><span class="linenos"> 96</span></a><span class="w"> </span><span class="sd">"""Decorator that ignores a simplification function if any of `exceptions` are raised"""</span>
|
|
</span><span id="catch-97"><a href="#catch-97"><span class="linenos"> 97</span></a>
|
|
</span><span id="catch-98"><a href="#catch-98"><span class="linenos"> 98</span></a> <span class="k">def</span> <span class="nf">decorator</span><span class="p">(</span><span class="n">func</span><span class="p">):</span>
|
|
</span><span id="catch-99"><a href="#catch-99"><span class="linenos"> 99</span></a> <span class="k">def</span> <span class="nf">wrapped</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
|
|
</span><span id="catch-100"><a href="#catch-100"><span class="linenos">100</span></a> <span class="k">try</span><span class="p">:</span>
|
|
</span><span id="catch-101"><a href="#catch-101"><span class="linenos">101</span></a> <span class="k">return</span> <span class="n">func</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span>
|
|
</span><span id="catch-102"><a href="#catch-102"><span class="linenos">102</span></a> <span class="k">except</span> <span class="n">exceptions</span><span class="p">:</span>
|
|
</span><span id="catch-103"><a href="#catch-103"><span class="linenos">103</span></a> <span class="k">return</span> <span class="n">expression</span>
|
|
</span><span id="catch-104"><a href="#catch-104"><span class="linenos">104</span></a>
|
|
</span><span id="catch-105"><a href="#catch-105"><span class="linenos">105</span></a> <span class="k">return</span> <span class="n">wrapped</span>
|
|
</span><span id="catch-106"><a href="#catch-106"><span class="linenos">106</span></a>
|
|
</span><span id="catch-107"><a href="#catch-107"><span class="linenos">107</span></a> <span class="k">return</span> <span class="n">decorator</span>
|
|
</span></pre></div>
|
|
|
|
|
|
<div class="docstring"><p>Decorator that ignores a simplification function if any of <code>exceptions</code> are raised</p>
|
|
</div>
|
|
|
|
|
|
</section>
|
|
<section id="rewrite_between">
|
|
<input id="rewrite_between-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1">
|
|
<div class="attr function">
|
|
|
|
<span class="def">def</span>
|
|
<span class="name">rewrite_between</span><span class="signature pdoc-code multiline">(<span class="param"> <span class="n">expression</span><span class="p">:</span> <span class="n"><a href="../expressions.html#Expression">sqlglot.expressions.Expression</a></span></span><span class="return-annotation">) -> <span class="n"><a href="../expressions.html#Expression">sqlglot.expressions.Expression</a></span>:</span></span>
|
|
|
|
<label class="view-source-button" for="rewrite_between-view-source"><span>View Source</span></label>
|
|
|
|
</div>
|
|
<a class="headerlink" href="#rewrite_between"></a>
|
|
<div class="pdoc-code codehilite"><pre><span></span><span id="rewrite_between-110"><a href="#rewrite_between-110"><span class="linenos">110</span></a><span class="k">def</span> <span class="nf">rewrite_between</span><span class="p">(</span><span class="n">expression</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">)</span> <span class="o">-></span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">:</span>
|
|
</span><span id="rewrite_between-111"><a href="#rewrite_between-111"><span class="linenos">111</span></a><span class="w"> </span><span class="sd">"""Rewrite x between y and z to x >= y AND x <= z.</span>
|
|
</span><span id="rewrite_between-112"><a href="#rewrite_between-112"><span class="linenos">112</span></a>
|
|
</span><span id="rewrite_between-113"><a href="#rewrite_between-113"><span class="linenos">113</span></a><span class="sd"> This is done because comparison simplification is only done on lt/lte/gt/gte.</span>
|
|
</span><span id="rewrite_between-114"><a href="#rewrite_between-114"><span class="linenos">114</span></a><span class="sd"> """</span>
|
|
</span><span id="rewrite_between-115"><a href="#rewrite_between-115"><span class="linenos">115</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Between</span><span class="p">):</span>
|
|
</span><span id="rewrite_between-116"><a href="#rewrite_between-116"><span class="linenos">116</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">and_</span><span class="p">(</span>
|
|
</span><span id="rewrite_between-117"><a href="#rewrite_between-117"><span class="linenos">117</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">GTE</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">copy</span><span class="p">(),</span> <span class="n">expression</span><span class="o">=</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="p">[</span><span class="s2">"low"</span><span class="p">]),</span>
|
|
</span><span id="rewrite_between-118"><a href="#rewrite_between-118"><span class="linenos">118</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">LTE</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">copy</span><span class="p">(),</span> <span class="n">expression</span><span class="o">=</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="p">[</span><span class="s2">"high"</span><span class="p">]),</span>
|
|
</span><span id="rewrite_between-119"><a href="#rewrite_between-119"><span class="linenos">119</span></a> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span>
|
|
</span><span id="rewrite_between-120"><a href="#rewrite_between-120"><span class="linenos">120</span></a> <span class="p">)</span>
|
|
</span><span id="rewrite_between-121"><a href="#rewrite_between-121"><span class="linenos">121</span></a> <span class="k">return</span> <span class="n">expression</span>
|
|
</span></pre></div>
|
|
|
|
|
|
<div class="docstring"><p>Rewrite x between y and z to x >= y AND x <= z.</p>
|
|
|
|
<p>This is done because comparison simplification is only done on lt/lte/gt/gte.</p>
|
|
</div>
|
|
|
|
|
|
</section>
|
|
<section id="simplify_not">
|
|
<input id="simplify_not-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1">
|
|
<div class="attr function">
|
|
|
|
<span class="def">def</span>
|
|
<span class="name">simplify_not</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">expression</span></span><span class="return-annotation">):</span></span>
|
|
|
|
<label class="view-source-button" for="simplify_not-view-source"><span>View Source</span></label>
|
|
|
|
</div>
|
|
<a class="headerlink" href="#simplify_not"></a>
|
|
<div class="pdoc-code codehilite"><pre><span></span><span id="simplify_not-124"><a href="#simplify_not-124"><span class="linenos">124</span></a><span class="k">def</span> <span class="nf">simplify_not</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span>
|
|
</span><span id="simplify_not-125"><a href="#simplify_not-125"><span class="linenos">125</span></a><span class="w"> </span><span class="sd">"""</span>
|
|
</span><span id="simplify_not-126"><a href="#simplify_not-126"><span class="linenos">126</span></a><span class="sd"> Demorgan's Law</span>
|
|
</span><span id="simplify_not-127"><a href="#simplify_not-127"><span class="linenos">127</span></a><span class="sd"> NOT (x OR y) -> NOT x AND NOT y</span>
|
|
</span><span id="simplify_not-128"><a href="#simplify_not-128"><span class="linenos">128</span></a><span class="sd"> NOT (x AND y) -> NOT x OR NOT y</span>
|
|
</span><span id="simplify_not-129"><a href="#simplify_not-129"><span class="linenos">129</span></a><span class="sd"> """</span>
|
|
</span><span id="simplify_not-130"><a href="#simplify_not-130"><span class="linenos">130</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Not</span><span class="p">):</span>
|
|
</span><span id="simplify_not-131"><a href="#simplify_not-131"><span class="linenos">131</span></a> <span class="k">if</span> <span class="n">is_null</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">):</span>
|
|
</span><span id="simplify_not-132"><a href="#simplify_not-132"><span class="linenos">132</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">null</span><span class="p">()</span>
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|
</span><span id="simplify_not-133"><a href="#simplify_not-133"><span class="linenos">133</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Paren</span><span class="p">):</span>
|
|
</span><span id="simplify_not-134"><a href="#simplify_not-134"><span class="linenos">134</span></a> <span class="n">condition</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">unnest</span><span class="p">()</span>
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</span><span id="simplify_not-135"><a href="#simplify_not-135"><span class="linenos">135</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">condition</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">):</span>
|
|
</span><span id="simplify_not-136"><a href="#simplify_not-136"><span class="linenos">136</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">or_</span><span class="p">(</span>
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|
</span><span id="simplify_not-137"><a href="#simplify_not-137"><span class="linenos">137</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">not_</span><span class="p">(</span><span class="n">condition</span><span class="o">.</span><span class="n">left</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">),</span>
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|
</span><span id="simplify_not-138"><a href="#simplify_not-138"><span class="linenos">138</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">not_</span><span class="p">(</span><span class="n">condition</span><span class="o">.</span><span class="n">right</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">),</span>
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|
</span><span id="simplify_not-139"><a href="#simplify_not-139"><span class="linenos">139</span></a> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span>
|
|
</span><span id="simplify_not-140"><a href="#simplify_not-140"><span class="linenos">140</span></a> <span class="p">)</span>
|
|
</span><span id="simplify_not-141"><a href="#simplify_not-141"><span class="linenos">141</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">condition</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Or</span><span class="p">):</span>
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|
</span><span id="simplify_not-142"><a href="#simplify_not-142"><span class="linenos">142</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">and_</span><span class="p">(</span>
|
|
</span><span id="simplify_not-143"><a href="#simplify_not-143"><span class="linenos">143</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">not_</span><span class="p">(</span><span class="n">condition</span><span class="o">.</span><span class="n">left</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">),</span>
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|
</span><span id="simplify_not-144"><a href="#simplify_not-144"><span class="linenos">144</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">not_</span><span class="p">(</span><span class="n">condition</span><span class="o">.</span><span class="n">right</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">),</span>
|
|
</span><span id="simplify_not-145"><a href="#simplify_not-145"><span class="linenos">145</span></a> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span>
|
|
</span><span id="simplify_not-146"><a href="#simplify_not-146"><span class="linenos">146</span></a> <span class="p">)</span>
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</span><span id="simplify_not-147"><a href="#simplify_not-147"><span class="linenos">147</span></a> <span class="k">if</span> <span class="n">is_null</span><span class="p">(</span><span class="n">condition</span><span class="p">):</span>
|
|
</span><span id="simplify_not-148"><a href="#simplify_not-148"><span class="linenos">148</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">null</span><span class="p">()</span>
|
|
</span><span id="simplify_not-149"><a href="#simplify_not-149"><span class="linenos">149</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">):</span>
|
|
</span><span id="simplify_not-150"><a href="#simplify_not-150"><span class="linenos">150</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span>
|
|
</span><span id="simplify_not-151"><a href="#simplify_not-151"><span class="linenos">151</span></a> <span class="k">if</span> <span class="n">is_false</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">):</span>
|
|
</span><span id="simplify_not-152"><a href="#simplify_not-152"><span class="linenos">152</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span>
|
|
</span><span id="simplify_not-153"><a href="#simplify_not-153"><span class="linenos">153</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Not</span><span class="p">):</span>
|
|
</span><span id="simplify_not-154"><a href="#simplify_not-154"><span class="linenos">154</span></a> <span class="c1"># double negation</span>
|
|
</span><span id="simplify_not-155"><a href="#simplify_not-155"><span class="linenos">155</span></a> <span class="c1"># NOT NOT x -> x</span>
|
|
</span><span id="simplify_not-156"><a href="#simplify_not-156"><span class="linenos">156</span></a> <span class="k">return</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">this</span>
|
|
</span><span id="simplify_not-157"><a href="#simplify_not-157"><span class="linenos">157</span></a> <span class="k">return</span> <span class="n">expression</span>
|
|
</span></pre></div>
|
|
|
|
|
|
<div class="docstring"><p>Demorgan's Law
|
|
NOT (x OR y) -> NOT x AND NOT y
|
|
NOT (x AND y) -> NOT x OR NOT y</p>
|
|
</div>
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</section>
|
|
<section id="flatten">
|
|
<input id="flatten-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1">
|
|
<div class="attr function">
|
|
|
|
<span class="def">def</span>
|
|
<span class="name">flatten</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">expression</span></span><span class="return-annotation">):</span></span>
|
|
|
|
<label class="view-source-button" for="flatten-view-source"><span>View Source</span></label>
|
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|
|
</div>
|
|
<a class="headerlink" href="#flatten"></a>
|
|
<div class="pdoc-code codehilite"><pre><span></span><span id="flatten-160"><a href="#flatten-160"><span class="linenos">160</span></a><span class="k">def</span> <span class="nf">flatten</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span>
|
|
</span><span id="flatten-161"><a href="#flatten-161"><span class="linenos">161</span></a><span class="w"> </span><span class="sd">"""</span>
|
|
</span><span id="flatten-162"><a href="#flatten-162"><span class="linenos">162</span></a><span class="sd"> A AND (B AND C) -> A AND B AND C</span>
|
|
</span><span id="flatten-163"><a href="#flatten-163"><span class="linenos">163</span></a><span class="sd"> A OR (B OR C) -> A OR B OR C</span>
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|
</span><span id="flatten-164"><a href="#flatten-164"><span class="linenos">164</span></a><span class="sd"> """</span>
|
|
</span><span id="flatten-165"><a href="#flatten-165"><span class="linenos">165</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">):</span>
|
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</span><span id="flatten-166"><a href="#flatten-166"><span class="linenos">166</span></a> <span class="k">for</span> <span class="n">node</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">values</span><span class="p">():</span>
|
|
</span><span id="flatten-167"><a href="#flatten-167"><span class="linenos">167</span></a> <span class="n">child</span> <span class="o">=</span> <span class="n">node</span><span class="o">.</span><span class="n">unnest</span><span class="p">()</span>
|
|
</span><span id="flatten-168"><a href="#flatten-168"><span class="linenos">168</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">child</span><span class="p">,</span> <span class="n">expression</span><span class="o">.</span><span class="vm">__class__</span><span class="p">):</span>
|
|
</span><span id="flatten-169"><a href="#flatten-169"><span class="linenos">169</span></a> <span class="n">node</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">child</span><span class="p">)</span>
|
|
</span><span id="flatten-170"><a href="#flatten-170"><span class="linenos">170</span></a> <span class="k">return</span> <span class="n">expression</span>
|
|
</span></pre></div>
|
|
|
|
|
|
<div class="docstring"><p>A AND (B AND C) -> A AND B AND C
|
|
A OR (B OR C) -> A OR B OR C</p>
|
|
</div>
|
|
|
|
|
|
</section>
|
|
<section id="simplify_connectors">
|
|
<input id="simplify_connectors-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1">
|
|
<div class="attr function">
|
|
|
|
<span class="def">def</span>
|
|
<span class="name">simplify_connectors</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">expression</span>, </span><span class="param"><span class="n">root</span><span class="o">=</span><span class="kc">True</span></span><span class="return-annotation">):</span></span>
|
|
|
|
<label class="view-source-button" for="simplify_connectors-view-source"><span>View Source</span></label>
|
|
|
|
</div>
|
|
<a class="headerlink" href="#simplify_connectors"></a>
|
|
<div class="pdoc-code codehilite"><pre><span></span><span id="simplify_connectors-173"><a href="#simplify_connectors-173"><span class="linenos">173</span></a><span class="k">def</span> <span class="nf">simplify_connectors</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">root</span><span class="o">=</span><span class="kc">True</span><span class="p">):</span>
|
|
</span><span id="simplify_connectors-174"><a href="#simplify_connectors-174"><span class="linenos">174</span></a> <span class="k">def</span> <span class="nf">_simplify_connectors</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">left</span><span class="p">,</span> <span class="n">right</span><span class="p">):</span>
|
|
</span><span id="simplify_connectors-175"><a href="#simplify_connectors-175"><span class="linenos">175</span></a> <span class="k">if</span> <span class="n">left</span> <span class="o">==</span> <span class="n">right</span><span class="p">:</span>
|
|
</span><span id="simplify_connectors-176"><a href="#simplify_connectors-176"><span class="linenos">176</span></a> <span class="k">return</span> <span class="n">left</span>
|
|
</span><span id="simplify_connectors-177"><a href="#simplify_connectors-177"><span class="linenos">177</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">):</span>
|
|
</span><span id="simplify_connectors-178"><a href="#simplify_connectors-178"><span class="linenos">178</span></a> <span class="k">if</span> <span class="n">is_false</span><span class="p">(</span><span class="n">left</span><span class="p">)</span> <span class="ow">or</span> <span class="n">is_false</span><span class="p">(</span><span class="n">right</span><span class="p">):</span>
|
|
</span><span id="simplify_connectors-179"><a href="#simplify_connectors-179"><span class="linenos">179</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span>
|
|
</span><span id="simplify_connectors-180"><a href="#simplify_connectors-180"><span class="linenos">180</span></a> <span class="k">if</span> <span class="n">is_null</span><span class="p">(</span><span class="n">left</span><span class="p">)</span> <span class="ow">or</span> <span class="n">is_null</span><span class="p">(</span><span class="n">right</span><span class="p">):</span>
|
|
</span><span id="simplify_connectors-181"><a href="#simplify_connectors-181"><span class="linenos">181</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">null</span><span class="p">()</span>
|
|
</span><span id="simplify_connectors-182"><a href="#simplify_connectors-182"><span class="linenos">182</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">left</span><span class="p">)</span> <span class="ow">and</span> <span class="n">always_true</span><span class="p">(</span><span class="n">right</span><span class="p">):</span>
|
|
</span><span id="simplify_connectors-183"><a href="#simplify_connectors-183"><span class="linenos">183</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span>
|
|
</span><span id="simplify_connectors-184"><a href="#simplify_connectors-184"><span class="linenos">184</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">left</span><span class="p">):</span>
|
|
</span><span id="simplify_connectors-185"><a href="#simplify_connectors-185"><span class="linenos">185</span></a> <span class="k">return</span> <span class="n">right</span>
|
|
</span><span id="simplify_connectors-186"><a href="#simplify_connectors-186"><span class="linenos">186</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">right</span><span class="p">):</span>
|
|
</span><span id="simplify_connectors-187"><a href="#simplify_connectors-187"><span class="linenos">187</span></a> <span class="k">return</span> <span class="n">left</span>
|
|
</span><span id="simplify_connectors-188"><a href="#simplify_connectors-188"><span class="linenos">188</span></a> <span class="k">return</span> <span class="n">_simplify_comparison</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">left</span><span class="p">,</span> <span class="n">right</span><span class="p">)</span>
|
|
</span><span id="simplify_connectors-189"><a href="#simplify_connectors-189"><span class="linenos">189</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Or</span><span class="p">):</span>
|
|
</span><span id="simplify_connectors-190"><a href="#simplify_connectors-190"><span class="linenos">190</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">left</span><span class="p">)</span> <span class="ow">or</span> <span class="n">always_true</span><span class="p">(</span><span class="n">right</span><span class="p">):</span>
|
|
</span><span id="simplify_connectors-191"><a href="#simplify_connectors-191"><span class="linenos">191</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span>
|
|
</span><span id="simplify_connectors-192"><a href="#simplify_connectors-192"><span class="linenos">192</span></a> <span class="k">if</span> <span class="n">is_false</span><span class="p">(</span><span class="n">left</span><span class="p">)</span> <span class="ow">and</span> <span class="n">is_false</span><span class="p">(</span><span class="n">right</span><span class="p">):</span>
|
|
</span><span id="simplify_connectors-193"><a href="#simplify_connectors-193"><span class="linenos">193</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span>
|
|
</span><span id="simplify_connectors-194"><a href="#simplify_connectors-194"><span class="linenos">194</span></a> <span class="k">if</span> <span class="p">(</span>
|
|
</span><span id="simplify_connectors-195"><a href="#simplify_connectors-195"><span class="linenos">195</span></a> <span class="p">(</span><span class="n">is_null</span><span class="p">(</span><span class="n">left</span><span class="p">)</span> <span class="ow">and</span> <span class="n">is_null</span><span class="p">(</span><span class="n">right</span><span class="p">))</span>
|
|
</span><span id="simplify_connectors-196"><a href="#simplify_connectors-196"><span class="linenos">196</span></a> <span class="ow">or</span> <span class="p">(</span><span class="n">is_null</span><span class="p">(</span><span class="n">left</span><span class="p">)</span> <span class="ow">and</span> <span class="n">is_false</span><span class="p">(</span><span class="n">right</span><span class="p">))</span>
|
|
</span><span id="simplify_connectors-197"><a href="#simplify_connectors-197"><span class="linenos">197</span></a> <span class="ow">or</span> <span class="p">(</span><span class="n">is_false</span><span class="p">(</span><span class="n">left</span><span class="p">)</span> <span class="ow">and</span> <span class="n">is_null</span><span class="p">(</span><span class="n">right</span><span class="p">))</span>
|
|
</span><span id="simplify_connectors-198"><a href="#simplify_connectors-198"><span class="linenos">198</span></a> <span class="p">):</span>
|
|
</span><span id="simplify_connectors-199"><a href="#simplify_connectors-199"><span class="linenos">199</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">null</span><span class="p">()</span>
|
|
</span><span id="simplify_connectors-200"><a href="#simplify_connectors-200"><span class="linenos">200</span></a> <span class="k">if</span> <span class="n">is_false</span><span class="p">(</span><span class="n">left</span><span class="p">):</span>
|
|
</span><span id="simplify_connectors-201"><a href="#simplify_connectors-201"><span class="linenos">201</span></a> <span class="k">return</span> <span class="n">right</span>
|
|
</span><span id="simplify_connectors-202"><a href="#simplify_connectors-202"><span class="linenos">202</span></a> <span class="k">if</span> <span class="n">is_false</span><span class="p">(</span><span class="n">right</span><span class="p">):</span>
|
|
</span><span id="simplify_connectors-203"><a href="#simplify_connectors-203"><span class="linenos">203</span></a> <span class="k">return</span> <span class="n">left</span>
|
|
</span><span id="simplify_connectors-204"><a href="#simplify_connectors-204"><span class="linenos">204</span></a> <span class="k">return</span> <span class="n">_simplify_comparison</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">left</span><span class="p">,</span> <span class="n">right</span><span class="p">,</span> <span class="n">or_</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span>
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</span><span id="simplify_connectors-205"><a href="#simplify_connectors-205"><span class="linenos">205</span></a>
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</span><span id="simplify_connectors-206"><a href="#simplify_connectors-206"><span class="linenos">206</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">):</span>
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</span><span id="simplify_connectors-207"><a href="#simplify_connectors-207"><span class="linenos">207</span></a> <span class="k">return</span> <span class="n">_flat_simplify</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">_simplify_connectors</span><span class="p">,</span> <span class="n">root</span><span class="p">)</span>
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</span><span id="simplify_connectors-208"><a href="#simplify_connectors-208"><span class="linenos">208</span></a> <span class="k">return</span> <span class="n">expression</span>
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</span></pre></div>
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</section>
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<section id="LT_LTE">
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<div class="attr variable">
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<span class="name">LT_LTE</span> =
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<span class="default_value">(<class '<a href="../expressions.html#LT">sqlglot.expressions.LT</a>'>, <class '<a href="../expressions.html#LTE">sqlglot.expressions.LTE</a>'>)</span>
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</section>
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<section id="GT_GTE">
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<div class="attr variable">
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<span class="name">GT_GTE</span> =
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<span class="default_value">(<class '<a href="../expressions.html#GT">sqlglot.expressions.GT</a>'>, <class '<a href="../expressions.html#GTE">sqlglot.expressions.GTE</a>'>)</span>
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</section>
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<section id="COMPARISONS">
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<label class="view-value-button pdoc-button" for="COMPARISONS-view-value"></label><span class="default_value">(<class '<a href="../expressions.html#LT">sqlglot.expressions.LT</a>'>, <class '<a href="../expressions.html#LTE">sqlglot.expressions.LTE</a>'>, <class '<a href="../expressions.html#GT">sqlglot.expressions.GT</a>'>, <class '<a href="../expressions.html#GTE">sqlglot.expressions.GTE</a>'>, <class '<a href="../expressions.html#EQ">sqlglot.expressions.EQ</a>'>, <class '<a href="../expressions.html#NEQ">sqlglot.expressions.NEQ</a>'>, <class '<a href="../expressions.html#Is">sqlglot.expressions.Is</a>'>)</span>
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<div class="attr variable">
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<span class="name">INVERSE_COMPARISONS</span><span class="annotation">: Dict[Type[<a href="../expressions.html#Expression">sqlglot.expressions.Expression</a>], Type[<a href="../expressions.html#Expression">sqlglot.expressions.Expression</a>]]</span> =
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<label class="view-value-button pdoc-button" for="INVERSE_COMPARISONS-view-value"></label><span class="default_value">{<class '<a href="../expressions.html#LT">sqlglot.expressions.LT</a>'>: <class '<a href="../expressions.html#GT">sqlglot.expressions.GT</a>'>, <class '<a href="../expressions.html#GT">sqlglot.expressions.GT</a>'>: <class '<a href="../expressions.html#LT">sqlglot.expressions.LT</a>'>, <class '<a href="../expressions.html#LTE">sqlglot.expressions.LTE</a>'>: <class '<a href="../expressions.html#GTE">sqlglot.expressions.GTE</a>'>, <class '<a href="../expressions.html#GTE">sqlglot.expressions.GTE</a>'>: <class '<a href="../expressions.html#LTE">sqlglot.expressions.LTE</a>'>}</span>
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<a class="headerlink" href="#INVERSE_COMPARISONS"></a>
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</section>
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<section id="remove_compliments">
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<input id="remove_compliments-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1">
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<div class="attr function">
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<span class="def">def</span>
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<span class="name">remove_compliments</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">expression</span>, </span><span class="param"><span class="n">root</span><span class="o">=</span><span class="kc">True</span></span><span class="return-annotation">):</span></span>
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<label class="view-source-button" for="remove_compliments-view-source"><span>View Source</span></label>
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</div>
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<a class="headerlink" href="#remove_compliments"></a>
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<div class="pdoc-code codehilite"><pre><span></span><span id="remove_compliments-291"><a href="#remove_compliments-291"><span class="linenos">291</span></a><span class="k">def</span> <span class="nf">remove_compliments</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">root</span><span class="o">=</span><span class="kc">True</span><span class="p">):</span>
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</span><span id="remove_compliments-292"><a href="#remove_compliments-292"><span class="linenos">292</span></a><span class="w"> </span><span class="sd">"""</span>
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</span><span id="remove_compliments-293"><a href="#remove_compliments-293"><span class="linenos">293</span></a><span class="sd"> Removing compliments.</span>
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</span><span id="remove_compliments-294"><a href="#remove_compliments-294"><span class="linenos">294</span></a>
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</span><span id="remove_compliments-295"><a href="#remove_compliments-295"><span class="linenos">295</span></a><span class="sd"> A AND NOT A -> FALSE</span>
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</span><span id="remove_compliments-296"><a href="#remove_compliments-296"><span class="linenos">296</span></a><span class="sd"> A OR NOT A -> TRUE</span>
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</span><span id="remove_compliments-297"><a href="#remove_compliments-297"><span class="linenos">297</span></a><span class="sd"> """</span>
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</span><span id="remove_compliments-298"><a href="#remove_compliments-298"><span class="linenos">298</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">)</span> <span class="ow">and</span> <span class="p">(</span><span class="n">root</span> <span class="ow">or</span> <span class="ow">not</span> <span class="n">expression</span><span class="o">.</span><span class="n">same_parent</span><span class="p">):</span>
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</span><span id="remove_compliments-299"><a href="#remove_compliments-299"><span class="linenos">299</span></a> <span class="n">compliment</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">)</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span>
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</span><span id="remove_compliments-300"><a href="#remove_compliments-300"><span class="linenos">300</span></a>
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</span><span id="remove_compliments-301"><a href="#remove_compliments-301"><span class="linenos">301</span></a> <span class="k">for</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">permutations</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">flatten</span><span class="p">(),</span> <span class="mi">2</span><span class="p">):</span>
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</span><span id="remove_compliments-302"><a href="#remove_compliments-302"><span class="linenos">302</span></a> <span class="k">if</span> <span class="n">is_complement</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">):</span>
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</span><span id="remove_compliments-303"><a href="#remove_compliments-303"><span class="linenos">303</span></a> <span class="k">return</span> <span class="n">compliment</span>
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</span><span id="remove_compliments-304"><a href="#remove_compliments-304"><span class="linenos">304</span></a> <span class="k">return</span> <span class="n">expression</span>
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</span></pre></div>
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<div class="docstring"><p>Removing compliments.</p>
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|
<p>A AND NOT A -> FALSE
|
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A OR NOT A -> TRUE</p>
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</div>
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</section>
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<section id="uniq_sort">
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<input id="uniq_sort-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1">
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<div class="attr function">
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<span class="def">def</span>
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<span class="name">uniq_sort</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">expression</span>, </span><span class="param"><span class="n">generate</span>, </span><span class="param"><span class="n">root</span><span class="o">=</span><span class="kc">True</span></span><span class="return-annotation">):</span></span>
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</div>
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<a class="headerlink" href="#uniq_sort"></a>
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<div class="pdoc-code codehilite"><pre><span></span><span id="uniq_sort-307"><a href="#uniq_sort-307"><span class="linenos">307</span></a><span class="k">def</span> <span class="nf">uniq_sort</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">generate</span><span class="p">,</span> <span class="n">root</span><span class="o">=</span><span class="kc">True</span><span class="p">):</span>
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</span><span id="uniq_sort-308"><a href="#uniq_sort-308"><span class="linenos">308</span></a><span class="w"> </span><span class="sd">"""</span>
|
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</span><span id="uniq_sort-309"><a href="#uniq_sort-309"><span class="linenos">309</span></a><span class="sd"> Uniq and sort a connector.</span>
|
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</span><span id="uniq_sort-310"><a href="#uniq_sort-310"><span class="linenos">310</span></a>
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</span><span id="uniq_sort-311"><a href="#uniq_sort-311"><span class="linenos">311</span></a><span class="sd"> C AND A AND B AND B -> A AND B AND C</span>
|
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</span><span id="uniq_sort-312"><a href="#uniq_sort-312"><span class="linenos">312</span></a><span class="sd"> """</span>
|
|
</span><span id="uniq_sort-313"><a href="#uniq_sort-313"><span class="linenos">313</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">)</span> <span class="ow">and</span> <span class="p">(</span><span class="n">root</span> <span class="ow">or</span> <span class="ow">not</span> <span class="n">expression</span><span class="o">.</span><span class="n">same_parent</span><span class="p">):</span>
|
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</span><span id="uniq_sort-314"><a href="#uniq_sort-314"><span class="linenos">314</span></a> <span class="n">result_func</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">and_</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">)</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">or_</span>
|
|
</span><span id="uniq_sort-315"><a href="#uniq_sort-315"><span class="linenos">315</span></a> <span class="n">flattened</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">flatten</span><span class="p">())</span>
|
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</span><span id="uniq_sort-316"><a href="#uniq_sort-316"><span class="linenos">316</span></a> <span class="n">deduped</span> <span class="o">=</span> <span class="p">{</span><span class="n">generate</span><span class="p">(</span><span class="n">e</span><span class="p">):</span> <span class="n">e</span> <span class="k">for</span> <span class="n">e</span> <span class="ow">in</span> <span class="n">flattened</span><span class="p">}</span>
|
|
</span><span id="uniq_sort-317"><a href="#uniq_sort-317"><span class="linenos">317</span></a> <span class="n">arr</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">(</span><span class="n">deduped</span><span class="o">.</span><span class="n">items</span><span class="p">())</span>
|
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</span><span id="uniq_sort-318"><a href="#uniq_sort-318"><span class="linenos">318</span></a>
|
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</span><span id="uniq_sort-319"><a href="#uniq_sort-319"><span class="linenos">319</span></a> <span class="c1"># check if the operands are already sorted, if not sort them</span>
|
|
</span><span id="uniq_sort-320"><a href="#uniq_sort-320"><span class="linenos">320</span></a> <span class="c1"># A AND C AND B -> A AND B AND C</span>
|
|
</span><span id="uniq_sort-321"><a href="#uniq_sort-321"><span class="linenos">321</span></a> <span class="k">for</span> <span class="n">i</span><span class="p">,</span> <span class="p">(</span><span class="n">sql</span><span class="p">,</span> <span class="n">e</span><span class="p">)</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="n">arr</span><span class="p">[</span><span class="mi">1</span><span class="p">:]):</span>
|
|
</span><span id="uniq_sort-322"><a href="#uniq_sort-322"><span class="linenos">322</span></a> <span class="k">if</span> <span class="n">sql</span> <span class="o"><</span> <span class="n">arr</span><span class="p">[</span><span class="n">i</span><span class="p">][</span><span class="mi">0</span><span class="p">]:</span>
|
|
</span><span id="uniq_sort-323"><a href="#uniq_sort-323"><span class="linenos">323</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">result_func</span><span class="p">(</span><span class="o">*</span><span class="p">(</span><span class="n">e</span> <span class="k">for</span> <span class="n">_</span><span class="p">,</span> <span class="n">e</span> <span class="ow">in</span> <span class="nb">sorted</span><span class="p">(</span><span class="n">arr</span><span class="p">)),</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span>
|
|
</span><span id="uniq_sort-324"><a href="#uniq_sort-324"><span class="linenos">324</span></a> <span class="k">break</span>
|
|
</span><span id="uniq_sort-325"><a href="#uniq_sort-325"><span class="linenos">325</span></a> <span class="k">else</span><span class="p">:</span>
|
|
</span><span id="uniq_sort-326"><a href="#uniq_sort-326"><span class="linenos">326</span></a> <span class="c1"># we didn't have to sort but maybe we need to dedup</span>
|
|
</span><span id="uniq_sort-327"><a href="#uniq_sort-327"><span class="linenos">327</span></a> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">deduped</span><span class="p">)</span> <span class="o"><</span> <span class="nb">len</span><span class="p">(</span><span class="n">flattened</span><span class="p">):</span>
|
|
</span><span id="uniq_sort-328"><a href="#uniq_sort-328"><span class="linenos">328</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">result_func</span><span class="p">(</span><span class="o">*</span><span class="n">deduped</span><span class="o">.</span><span class="n">values</span><span class="p">(),</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span>
|
|
</span><span id="uniq_sort-329"><a href="#uniq_sort-329"><span class="linenos">329</span></a>
|
|
</span><span id="uniq_sort-330"><a href="#uniq_sort-330"><span class="linenos">330</span></a> <span class="k">return</span> <span class="n">expression</span>
|
|
</span></pre></div>
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<div class="docstring"><p>Uniq and sort a connector.</p>
|
|
|
|
<p>C AND A AND B AND B -> A AND B AND C</p>
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</div>
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</section>
|
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<section id="absorb_and_eliminate">
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<input id="absorb_and_eliminate-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1">
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<div class="attr function">
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<span class="def">def</span>
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<span class="name">absorb_and_eliminate</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">expression</span>, </span><span class="param"><span class="n">root</span><span class="o">=</span><span class="kc">True</span></span><span class="return-annotation">):</span></span>
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<label class="view-source-button" for="absorb_and_eliminate-view-source"><span>View Source</span></label>
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</div>
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<a class="headerlink" href="#absorb_and_eliminate"></a>
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<div class="pdoc-code codehilite"><pre><span></span><span id="absorb_and_eliminate-333"><a href="#absorb_and_eliminate-333"><span class="linenos">333</span></a><span class="k">def</span> <span class="nf">absorb_and_eliminate</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">root</span><span class="o">=</span><span class="kc">True</span><span class="p">):</span>
|
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</span><span id="absorb_and_eliminate-334"><a href="#absorb_and_eliminate-334"><span class="linenos">334</span></a><span class="w"> </span><span class="sd">"""</span>
|
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</span><span id="absorb_and_eliminate-335"><a href="#absorb_and_eliminate-335"><span class="linenos">335</span></a><span class="sd"> absorption:</span>
|
|
</span><span id="absorb_and_eliminate-336"><a href="#absorb_and_eliminate-336"><span class="linenos">336</span></a><span class="sd"> A AND (A OR B) -> A</span>
|
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</span><span id="absorb_and_eliminate-337"><a href="#absorb_and_eliminate-337"><span class="linenos">337</span></a><span class="sd"> A OR (A AND B) -> A</span>
|
|
</span><span id="absorb_and_eliminate-338"><a href="#absorb_and_eliminate-338"><span class="linenos">338</span></a><span class="sd"> A AND (NOT A OR B) -> A AND B</span>
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</span><span id="absorb_and_eliminate-339"><a href="#absorb_and_eliminate-339"><span class="linenos">339</span></a><span class="sd"> A OR (NOT A AND B) -> A OR B</span>
|
|
</span><span id="absorb_and_eliminate-340"><a href="#absorb_and_eliminate-340"><span class="linenos">340</span></a><span class="sd"> elimination:</span>
|
|
</span><span id="absorb_and_eliminate-341"><a href="#absorb_and_eliminate-341"><span class="linenos">341</span></a><span class="sd"> (A AND B) OR (A AND NOT B) -> A</span>
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</span><span id="absorb_and_eliminate-342"><a href="#absorb_and_eliminate-342"><span class="linenos">342</span></a><span class="sd"> (A OR B) AND (A OR NOT B) -> A</span>
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</span><span id="absorb_and_eliminate-343"><a href="#absorb_and_eliminate-343"><span class="linenos">343</span></a><span class="sd"> """</span>
|
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</span><span id="absorb_and_eliminate-344"><a href="#absorb_and_eliminate-344"><span class="linenos">344</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">)</span> <span class="ow">and</span> <span class="p">(</span><span class="n">root</span> <span class="ow">or</span> <span class="ow">not</span> <span class="n">expression</span><span class="o">.</span><span class="n">same_parent</span><span class="p">):</span>
|
|
</span><span id="absorb_and_eliminate-345"><a href="#absorb_and_eliminate-345"><span class="linenos">345</span></a> <span class="n">kind</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">Or</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">)</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span>
|
|
</span><span id="absorb_and_eliminate-346"><a href="#absorb_and_eliminate-346"><span class="linenos">346</span></a>
|
|
</span><span id="absorb_and_eliminate-347"><a href="#absorb_and_eliminate-347"><span class="linenos">347</span></a> <span class="k">for</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">permutations</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">flatten</span><span class="p">(),</span> <span class="mi">2</span><span class="p">):</span>
|
|
</span><span id="absorb_and_eliminate-348"><a href="#absorb_and_eliminate-348"><span class="linenos">348</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">kind</span><span class="p">):</span>
|
|
</span><span id="absorb_and_eliminate-349"><a href="#absorb_and_eliminate-349"><span class="linenos">349</span></a> <span class="n">aa</span><span class="p">,</span> <span class="n">ab</span> <span class="o">=</span> <span class="n">a</span><span class="o">.</span><span class="n">unnest_operands</span><span class="p">()</span>
|
|
</span><span id="absorb_and_eliminate-350"><a href="#absorb_and_eliminate-350"><span class="linenos">350</span></a>
|
|
</span><span id="absorb_and_eliminate-351"><a href="#absorb_and_eliminate-351"><span class="linenos">351</span></a> <span class="c1"># absorb</span>
|
|
</span><span id="absorb_and_eliminate-352"><a href="#absorb_and_eliminate-352"><span class="linenos">352</span></a> <span class="k">if</span> <span class="n">is_complement</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">aa</span><span class="p">):</span>
|
|
</span><span id="absorb_and_eliminate-353"><a href="#absorb_and_eliminate-353"><span class="linenos">353</span></a> <span class="n">aa</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> <span class="k">if</span> <span class="n">kind</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">())</span>
|
|
</span><span id="absorb_and_eliminate-354"><a href="#absorb_and_eliminate-354"><span class="linenos">354</span></a> <span class="k">elif</span> <span class="n">is_complement</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">ab</span><span class="p">):</span>
|
|
</span><span id="absorb_and_eliminate-355"><a href="#absorb_and_eliminate-355"><span class="linenos">355</span></a> <span class="n">ab</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> <span class="k">if</span> <span class="n">kind</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">())</span>
|
|
</span><span id="absorb_and_eliminate-356"><a href="#absorb_and_eliminate-356"><span class="linenos">356</span></a> <span class="k">elif</span> <span class="p">(</span><span class="nb">set</span><span class="p">(</span><span class="n">b</span><span class="o">.</span><span class="n">flatten</span><span class="p">())</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">kind</span><span class="p">)</span> <span class="k">else</span> <span class="p">{</span><span class="n">b</span><span class="p">})</span> <span class="o"><</span> <span class="nb">set</span><span class="p">(</span><span class="n">a</span><span class="o">.</span><span class="n">flatten</span><span class="p">()):</span>
|
|
</span><span id="absorb_and_eliminate-357"><a href="#absorb_and_eliminate-357"><span class="linenos">357</span></a> <span class="n">a</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> <span class="k">if</span> <span class="n">kind</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">())</span>
|
|
</span><span id="absorb_and_eliminate-358"><a href="#absorb_and_eliminate-358"><span class="linenos">358</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">kind</span><span class="p">):</span>
|
|
</span><span id="absorb_and_eliminate-359"><a href="#absorb_and_eliminate-359"><span class="linenos">359</span></a> <span class="c1"># eliminate</span>
|
|
</span><span id="absorb_and_eliminate-360"><a href="#absorb_and_eliminate-360"><span class="linenos">360</span></a> <span class="n">rhs</span> <span class="o">=</span> <span class="n">b</span><span class="o">.</span><span class="n">unnest_operands</span><span class="p">()</span>
|
|
</span><span id="absorb_and_eliminate-361"><a href="#absorb_and_eliminate-361"><span class="linenos">361</span></a> <span class="n">ba</span><span class="p">,</span> <span class="n">bb</span> <span class="o">=</span> <span class="n">rhs</span>
|
|
</span><span id="absorb_and_eliminate-362"><a href="#absorb_and_eliminate-362"><span class="linenos">362</span></a>
|
|
</span><span id="absorb_and_eliminate-363"><a href="#absorb_and_eliminate-363"><span class="linenos">363</span></a> <span class="k">if</span> <span class="n">aa</span> <span class="ow">in</span> <span class="n">rhs</span> <span class="ow">and</span> <span class="p">(</span><span class="n">is_complement</span><span class="p">(</span><span class="n">ab</span><span class="p">,</span> <span class="n">ba</span><span class="p">)</span> <span class="ow">or</span> <span class="n">is_complement</span><span class="p">(</span><span class="n">ab</span><span class="p">,</span> <span class="n">bb</span><span class="p">)):</span>
|
|
</span><span id="absorb_and_eliminate-364"><a href="#absorb_and_eliminate-364"><span class="linenos">364</span></a> <span class="n">a</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">aa</span><span class="p">)</span>
|
|
</span><span id="absorb_and_eliminate-365"><a href="#absorb_and_eliminate-365"><span class="linenos">365</span></a> <span class="n">b</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">aa</span><span class="p">)</span>
|
|
</span><span id="absorb_and_eliminate-366"><a href="#absorb_and_eliminate-366"><span class="linenos">366</span></a> <span class="k">elif</span> <span class="n">ab</span> <span class="ow">in</span> <span class="n">rhs</span> <span class="ow">and</span> <span class="p">(</span><span class="n">is_complement</span><span class="p">(</span><span class="n">aa</span><span class="p">,</span> <span class="n">ba</span><span class="p">)</span> <span class="ow">or</span> <span class="n">is_complement</span><span class="p">(</span><span class="n">aa</span><span class="p">,</span> <span class="n">bb</span><span class="p">)):</span>
|
|
</span><span id="absorb_and_eliminate-367"><a href="#absorb_and_eliminate-367"><span class="linenos">367</span></a> <span class="n">a</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">ab</span><span class="p">)</span>
|
|
</span><span id="absorb_and_eliminate-368"><a href="#absorb_and_eliminate-368"><span class="linenos">368</span></a> <span class="n">b</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">ab</span><span class="p">)</span>
|
|
</span><span id="absorb_and_eliminate-369"><a href="#absorb_and_eliminate-369"><span class="linenos">369</span></a>
|
|
</span><span id="absorb_and_eliminate-370"><a href="#absorb_and_eliminate-370"><span class="linenos">370</span></a> <span class="k">return</span> <span class="n">expression</span>
|
|
</span></pre></div>
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|
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<div class="docstring"><p>absorption:
|
|
A AND (A OR B) -> A
|
|
A OR (A AND B) -> A
|
|
A AND (NOT A OR B) -> A AND B
|
|
A OR (NOT A AND B) -> A OR B
|
|
elimination:
|
|
(A AND B) OR (A AND NOT B) -> A
|
|
(A OR B) AND (A OR NOT B) -> A</p>
|
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</div>
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</section>
|
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<section id="INVERSE_DATE_OPS">
|
|
<div class="attr variable">
|
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<span class="name">INVERSE_DATE_OPS</span><span class="annotation">: Dict[Type[<a href="../expressions.html#Expression">sqlglot.expressions.Expression</a>], Type[<a href="../expressions.html#Expression">sqlglot.expressions.Expression</a>]]</span> =
|
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<input id="INVERSE_DATE_OPS-view-value" class="view-value-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1">
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<label class="view-value-button pdoc-button" for="INVERSE_DATE_OPS-view-value"></label><span class="default_value">{<class '<a href="../expressions.html#DateAdd">sqlglot.expressions.DateAdd</a>'>: <class '<a href="../expressions.html#Sub">sqlglot.expressions.Sub</a>'>, <class '<a href="../expressions.html#DateSub">sqlglot.expressions.DateSub</a>'>: <class '<a href="../expressions.html#Add">sqlglot.expressions.Add</a>'>, <class '<a href="../expressions.html#DatetimeAdd">sqlglot.expressions.DatetimeAdd</a>'>: <class '<a href="../expressions.html#Sub">sqlglot.expressions.Sub</a>'>, <class '<a href="../expressions.html#DatetimeSub">sqlglot.expressions.DatetimeSub</a>'>: <class '<a href="../expressions.html#Add">sqlglot.expressions.Add</a>'>}</span>
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</div>
|
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<a class="headerlink" href="#INVERSE_DATE_OPS"></a>
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</section>
|
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<section id="INVERSE_OPS">
|
|
<div class="attr variable">
|
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<span class="name">INVERSE_OPS</span><span class="annotation">: Dict[Type[<a href="../expressions.html#Expression">sqlglot.expressions.Expression</a>], Type[<a href="../expressions.html#Expression">sqlglot.expressions.Expression</a>]]</span> =
|
|
<input id="INVERSE_OPS-view-value" class="view-value-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1">
|
|
<label class="view-value-button pdoc-button" for="INVERSE_OPS-view-value"></label><span class="default_value">{<class '<a href="../expressions.html#DateAdd">sqlglot.expressions.DateAdd</a>'>: <class '<a href="../expressions.html#Sub">sqlglot.expressions.Sub</a>'>, <class '<a href="../expressions.html#DateSub">sqlglot.expressions.DateSub</a>'>: <class '<a href="../expressions.html#Add">sqlglot.expressions.Add</a>'>, <class '<a href="../expressions.html#DatetimeAdd">sqlglot.expressions.DatetimeAdd</a>'>: <class '<a href="../expressions.html#Sub">sqlglot.expressions.Sub</a>'>, <class '<a href="../expressions.html#DatetimeSub">sqlglot.expressions.DatetimeSub</a>'>: <class '<a href="../expressions.html#Add">sqlglot.expressions.Add</a>'>, <class '<a href="../expressions.html#Add">sqlglot.expressions.Add</a>'>: <class '<a href="../expressions.html#Sub">sqlglot.expressions.Sub</a>'>, <class '<a href="../expressions.html#Sub">sqlglot.expressions.Sub</a>'>: <class '<a href="../expressions.html#Add">sqlglot.expressions.Add</a>'>}</span>
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</div>
|
|
<a class="headerlink" href="#INVERSE_OPS"></a>
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</section>
|
|
<section id="simplify_equality">
|
|
<input id="simplify_equality-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1">
|
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<div class="attr function">
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|
|
<span class="def">def</span>
|
|
<span class="name">simplify_equality</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">expression</span>, </span><span class="param"><span class="o">*</span><span class="n">args</span>, </span><span class="param"><span class="o">**</span><span class="n">kwargs</span></span><span class="return-annotation">):</span></span>
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<label class="view-source-button" for="simplify_equality-view-source"><span>View Source</span></label>
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</div>
|
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<a class="headerlink" href="#simplify_equality"></a>
|
|
<div class="pdoc-code codehilite"><pre><span></span><span id="simplify_equality-99"><a href="#simplify_equality-99"><span class="linenos"> 99</span></a> <span class="k">def</span> <span class="nf">wrapped</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
|
|
</span><span id="simplify_equality-100"><a href="#simplify_equality-100"><span class="linenos">100</span></a> <span class="k">try</span><span class="p">:</span>
|
|
</span><span id="simplify_equality-101"><a href="#simplify_equality-101"><span class="linenos">101</span></a> <span class="k">return</span> <span class="n">func</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span>
|
|
</span><span id="simplify_equality-102"><a href="#simplify_equality-102"><span class="linenos">102</span></a> <span class="k">except</span> <span class="n">exceptions</span><span class="p">:</span>
|
|
</span><span id="simplify_equality-103"><a href="#simplify_equality-103"><span class="linenos">103</span></a> <span class="k">return</span> <span class="n">expression</span>
|
|
</span></pre></div>
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<div class="docstring"><h6 id="use-the-subtraction-and-addition-properties-of-equality-to-simplify-expressions">Use the subtraction and addition properties of equality to simplify expressions:</h6>
|
|
|
|
<blockquote>
|
|
<p>x + 1 = 3 becomes x = 2</p>
|
|
</blockquote>
|
|
|
|
<p>There are two binary operations in the above expression: + and =
|
|
Here's how we reference all the operands in the code below:</p>
|
|
|
|
<pre><code> l r
|
|
x + 1 = 3
|
|
a b
|
|
</code></pre>
|
|
</div>
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|
|
|
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</section>
|
|
<section id="simplify_literals">
|
|
<input id="simplify_literals-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1">
|
|
<div class="attr function">
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|
|
|
<span class="def">def</span>
|
|
<span class="name">simplify_literals</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">expression</span>, </span><span class="param"><span class="n">root</span><span class="o">=</span><span class="kc">True</span></span><span class="return-annotation">):</span></span>
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<label class="view-source-button" for="simplify_literals-view-source"><span>View Source</span></label>
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</div>
|
|
<a class="headerlink" href="#simplify_literals"></a>
|
|
<div class="pdoc-code codehilite"><pre><span></span><span id="simplify_literals-447"><a href="#simplify_literals-447"><span class="linenos">447</span></a><span class="k">def</span> <span class="nf">simplify_literals</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">root</span><span class="o">=</span><span class="kc">True</span><span class="p">):</span>
|
|
</span><span id="simplify_literals-448"><a href="#simplify_literals-448"><span class="linenos">448</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Binary</span><span class="p">)</span> <span class="ow">and</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">):</span>
|
|
</span><span id="simplify_literals-449"><a href="#simplify_literals-449"><span class="linenos">449</span></a> <span class="k">return</span> <span class="n">_flat_simplify</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">_simplify_binary</span><span class="p">,</span> <span class="n">root</span><span class="p">)</span>
|
|
</span><span id="simplify_literals-450"><a href="#simplify_literals-450"><span class="linenos">450</span></a>
|
|
</span><span id="simplify_literals-451"><a href="#simplify_literals-451"><span class="linenos">451</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Neg</span><span class="p">):</span>
|
|
</span><span id="simplify_literals-452"><a href="#simplify_literals-452"><span class="linenos">452</span></a> <span class="n">this</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span>
|
|
</span><span id="simplify_literals-453"><a href="#simplify_literals-453"><span class="linenos">453</span></a> <span class="k">if</span> <span class="n">this</span><span class="o">.</span><span class="n">is_number</span><span class="p">:</span>
|
|
</span><span id="simplify_literals-454"><a href="#simplify_literals-454"><span class="linenos">454</span></a> <span class="n">value</span> <span class="o">=</span> <span class="n">this</span><span class="o">.</span><span class="n">name</span>
|
|
</span><span id="simplify_literals-455"><a href="#simplify_literals-455"><span class="linenos">455</span></a> <span class="k">if</span> <span class="n">value</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">==</span> <span class="s2">"-"</span><span class="p">:</span>
|
|
</span><span id="simplify_literals-456"><a href="#simplify_literals-456"><span class="linenos">456</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="o">.</span><span class="n">number</span><span class="p">(</span><span class="n">value</span><span class="p">[</span><span class="mi">1</span><span class="p">:])</span>
|
|
</span><span id="simplify_literals-457"><a href="#simplify_literals-457"><span class="linenos">457</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="o">.</span><span class="n">number</span><span class="p">(</span><span class="sa">f</span><span class="s2">"-</span><span class="si">{</span><span class="n">value</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span>
|
|
</span><span id="simplify_literals-458"><a href="#simplify_literals-458"><span class="linenos">458</span></a>
|
|
</span><span id="simplify_literals-459"><a href="#simplify_literals-459"><span class="linenos">459</span></a> <span class="k">return</span> <span class="n">expression</span>
|
|
</span></pre></div>
|
|
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</section>
|
|
<section id="simplify_parens">
|
|
<input id="simplify_parens-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1">
|
|
<div class="attr function">
|
|
|
|
<span class="def">def</span>
|
|
<span class="name">simplify_parens</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">expression</span></span><span class="return-annotation">):</span></span>
|
|
|
|
<label class="view-source-button" for="simplify_parens-view-source"><span>View Source</span></label>
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</div>
|
|
<a class="headerlink" href="#simplify_parens"></a>
|
|
<div class="pdoc-code codehilite"><pre><span></span><span id="simplify_parens-522"><a href="#simplify_parens-522"><span class="linenos">522</span></a><span class="k">def</span> <span class="nf">simplify_parens</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span>
|
|
</span><span id="simplify_parens-523"><a href="#simplify_parens-523"><span class="linenos">523</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Paren</span><span class="p">):</span>
|
|
</span><span id="simplify_parens-524"><a href="#simplify_parens-524"><span class="linenos">524</span></a> <span class="k">return</span> <span class="n">expression</span>
|
|
</span><span id="simplify_parens-525"><a href="#simplify_parens-525"><span class="linenos">525</span></a>
|
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</span><span id="simplify_parens-526"><a href="#simplify_parens-526"><span class="linenos">526</span></a> <span class="n">this</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span>
|
|
</span><span id="simplify_parens-527"><a href="#simplify_parens-527"><span class="linenos">527</span></a> <span class="n">parent</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">parent</span>
|
|
</span><span id="simplify_parens-528"><a href="#simplify_parens-528"><span class="linenos">528</span></a>
|
|
</span><span id="simplify_parens-529"><a href="#simplify_parens-529"><span class="linenos">529</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Select</span><span class="p">)</span> <span class="ow">and</span> <span class="p">(</span>
|
|
</span><span id="simplify_parens-530"><a href="#simplify_parens-530"><span class="linenos">530</span></a> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">parent</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Condition</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Binary</span><span class="p">))</span>
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</span><span id="simplify_parens-531"><a href="#simplify_parens-531"><span class="linenos">531</span></a> <span class="ow">or</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">parent</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Paren</span><span class="p">)</span>
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</span><span id="simplify_parens-532"><a href="#simplify_parens-532"><span class="linenos">532</span></a> <span class="ow">or</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Binary</span><span class="p">)</span>
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</span><span id="simplify_parens-533"><a href="#simplify_parens-533"><span class="linenos">533</span></a> <span class="ow">or</span> <span class="p">(</span><span class="nb">isinstance</span><span class="p">(</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Predicate</span><span class="p">)</span> <span class="ow">and</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">parent</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Predicate</span><span class="p">))</span>
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</span><span id="simplify_parens-534"><a href="#simplify_parens-534"><span class="linenos">534</span></a> <span class="ow">or</span> <span class="p">(</span><span class="nb">isinstance</span><span class="p">(</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Add</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">parent</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Add</span><span class="p">))</span>
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</span><span id="simplify_parens-535"><a href="#simplify_parens-535"><span class="linenos">535</span></a> <span class="ow">or</span> <span class="p">(</span><span class="nb">isinstance</span><span class="p">(</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Mul</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">parent</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Mul</span><span class="p">))</span>
|
|
</span><span id="simplify_parens-536"><a href="#simplify_parens-536"><span class="linenos">536</span></a> <span class="ow">or</span> <span class="p">(</span><span class="nb">isinstance</span><span class="p">(</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Mul</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">parent</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Add</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Sub</span><span class="p">)))</span>
|
|
</span><span id="simplify_parens-537"><a href="#simplify_parens-537"><span class="linenos">537</span></a> <span class="p">):</span>
|
|
</span><span id="simplify_parens-538"><a href="#simplify_parens-538"><span class="linenos">538</span></a> <span class="k">return</span> <span class="n">this</span>
|
|
</span><span id="simplify_parens-539"><a href="#simplify_parens-539"><span class="linenos">539</span></a> <span class="k">return</span> <span class="n">expression</span>
|
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</span></pre></div>
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</section>
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<section id="CONSTANTS">
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<div class="attr variable">
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<span class="name">CONSTANTS</span> =
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<input id="CONSTANTS-view-value" class="view-value-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1">
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<label class="view-value-button pdoc-button" for="CONSTANTS-view-value"></label><span class="default_value">(<class '<a href="../expressions.html#Literal">sqlglot.expressions.Literal</a>'>, <class '<a href="../expressions.html#Boolean">sqlglot.expressions.Boolean</a>'>, <class '<a href="../expressions.html#Null">sqlglot.expressions.Null</a>'>)</span>
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</div>
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<a class="headerlink" href="#CONSTANTS"></a>
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</section>
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<section id="simplify_coalesce">
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<input id="simplify_coalesce-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1">
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<div class="attr function">
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<span class="def">def</span>
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<span class="name">simplify_coalesce</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">expression</span></span><span class="return-annotation">):</span></span>
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<label class="view-source-button" for="simplify_coalesce-view-source"><span>View Source</span></label>
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</div>
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<a class="headerlink" href="#simplify_coalesce"></a>
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<div class="pdoc-code codehilite"><pre><span></span><span id="simplify_coalesce-549"><a href="#simplify_coalesce-549"><span class="linenos">549</span></a><span class="k">def</span> <span class="nf">simplify_coalesce</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span>
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</span><span id="simplify_coalesce-550"><a href="#simplify_coalesce-550"><span class="linenos">550</span></a> <span class="c1"># COALESCE(x) -> x</span>
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</span><span id="simplify_coalesce-551"><a href="#simplify_coalesce-551"><span class="linenos">551</span></a> <span class="k">if</span> <span class="p">(</span>
|
|
</span><span id="simplify_coalesce-552"><a href="#simplify_coalesce-552"><span class="linenos">552</span></a> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Coalesce</span><span class="p">)</span>
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</span><span id="simplify_coalesce-553"><a href="#simplify_coalesce-553"><span class="linenos">553</span></a> <span class="ow">and</span> <span class="ow">not</span> <span class="n">expression</span><span class="o">.</span><span class="n">expressions</span>
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</span><span id="simplify_coalesce-554"><a href="#simplify_coalesce-554"><span class="linenos">554</span></a> <span class="c1"># COALESCE is also used as a Spark partitioning hint</span>
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</span><span id="simplify_coalesce-555"><a href="#simplify_coalesce-555"><span class="linenos">555</span></a> <span class="ow">and</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">parent</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Hint</span><span class="p">)</span>
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</span><span id="simplify_coalesce-556"><a href="#simplify_coalesce-556"><span class="linenos">556</span></a> <span class="p">):</span>
|
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</span><span id="simplify_coalesce-557"><a href="#simplify_coalesce-557"><span class="linenos">557</span></a> <span class="k">return</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span>
|
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</span><span id="simplify_coalesce-558"><a href="#simplify_coalesce-558"><span class="linenos">558</span></a>
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</span><span id="simplify_coalesce-559"><a href="#simplify_coalesce-559"><span class="linenos">559</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">COMPARISONS</span><span class="p">):</span>
|
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</span><span id="simplify_coalesce-560"><a href="#simplify_coalesce-560"><span class="linenos">560</span></a> <span class="k">return</span> <span class="n">expression</span>
|
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</span><span id="simplify_coalesce-561"><a href="#simplify_coalesce-561"><span class="linenos">561</span></a>
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</span><span id="simplify_coalesce-562"><a href="#simplify_coalesce-562"><span class="linenos">562</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">left</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Coalesce</span><span class="p">):</span>
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</span><span id="simplify_coalesce-563"><a href="#simplify_coalesce-563"><span class="linenos">563</span></a> <span class="n">coalesce</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">left</span>
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</span><span id="simplify_coalesce-564"><a href="#simplify_coalesce-564"><span class="linenos">564</span></a> <span class="n">other</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">right</span>
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</span><span id="simplify_coalesce-565"><a href="#simplify_coalesce-565"><span class="linenos">565</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">right</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Coalesce</span><span class="p">):</span>
|
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</span><span id="simplify_coalesce-566"><a href="#simplify_coalesce-566"><span class="linenos">566</span></a> <span class="n">coalesce</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">right</span>
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</span><span id="simplify_coalesce-567"><a href="#simplify_coalesce-567"><span class="linenos">567</span></a> <span class="n">other</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">left</span>
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</span><span id="simplify_coalesce-568"><a href="#simplify_coalesce-568"><span class="linenos">568</span></a> <span class="k">else</span><span class="p">:</span>
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</span><span id="simplify_coalesce-569"><a href="#simplify_coalesce-569"><span class="linenos">569</span></a> <span class="k">return</span> <span class="n">expression</span>
|
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</span><span id="simplify_coalesce-570"><a href="#simplify_coalesce-570"><span class="linenos">570</span></a>
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</span><span id="simplify_coalesce-571"><a href="#simplify_coalesce-571"><span class="linenos">571</span></a> <span class="c1"># This transformation is valid for non-constants,</span>
|
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</span><span id="simplify_coalesce-572"><a href="#simplify_coalesce-572"><span class="linenos">572</span></a> <span class="c1"># but it really only does anything if they are both constants.</span>
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</span><span id="simplify_coalesce-573"><a href="#simplify_coalesce-573"><span class="linenos">573</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">other</span><span class="p">,</span> <span class="n">CONSTANTS</span><span class="p">):</span>
|
|
</span><span id="simplify_coalesce-574"><a href="#simplify_coalesce-574"><span class="linenos">574</span></a> <span class="k">return</span> <span class="n">expression</span>
|
|
</span><span id="simplify_coalesce-575"><a href="#simplify_coalesce-575"><span class="linenos">575</span></a>
|
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</span><span id="simplify_coalesce-576"><a href="#simplify_coalesce-576"><span class="linenos">576</span></a> <span class="c1"># Find the first constant arg</span>
|
|
</span><span id="simplify_coalesce-577"><a href="#simplify_coalesce-577"><span class="linenos">577</span></a> <span class="k">for</span> <span class="n">arg_index</span><span class="p">,</span> <span class="n">arg</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="n">coalesce</span><span class="o">.</span><span class="n">expressions</span><span class="p">):</span>
|
|
</span><span id="simplify_coalesce-578"><a href="#simplify_coalesce-578"><span class="linenos">578</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">arg</span><span class="p">,</span> <span class="n">CONSTANTS</span><span class="p">):</span>
|
|
</span><span id="simplify_coalesce-579"><a href="#simplify_coalesce-579"><span class="linenos">579</span></a> <span class="k">break</span>
|
|
</span><span id="simplify_coalesce-580"><a href="#simplify_coalesce-580"><span class="linenos">580</span></a> <span class="k">else</span><span class="p">:</span>
|
|
</span><span id="simplify_coalesce-581"><a href="#simplify_coalesce-581"><span class="linenos">581</span></a> <span class="k">return</span> <span class="n">expression</span>
|
|
</span><span id="simplify_coalesce-582"><a href="#simplify_coalesce-582"><span class="linenos">582</span></a>
|
|
</span><span id="simplify_coalesce-583"><a href="#simplify_coalesce-583"><span class="linenos">583</span></a> <span class="n">coalesce</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"expressions"</span><span class="p">,</span> <span class="n">coalesce</span><span class="o">.</span><span class="n">expressions</span><span class="p">[:</span><span class="n">arg_index</span><span class="p">])</span>
|
|
</span><span id="simplify_coalesce-584"><a href="#simplify_coalesce-584"><span class="linenos">584</span></a>
|
|
</span><span id="simplify_coalesce-585"><a href="#simplify_coalesce-585"><span class="linenos">585</span></a> <span class="c1"># Remove the COALESCE function. This is an optimization, skipping a simplify iteration,</span>
|
|
</span><span id="simplify_coalesce-586"><a href="#simplify_coalesce-586"><span class="linenos">586</span></a> <span class="c1"># since we already remove COALESCE at the top of this function.</span>
|
|
</span><span id="simplify_coalesce-587"><a href="#simplify_coalesce-587"><span class="linenos">587</span></a> <span class="n">coalesce</span> <span class="o">=</span> <span class="n">coalesce</span> <span class="k">if</span> <span class="n">coalesce</span><span class="o">.</span><span class="n">expressions</span> <span class="k">else</span> <span class="n">coalesce</span><span class="o">.</span><span class="n">this</span>
|
|
</span><span id="simplify_coalesce-588"><a href="#simplify_coalesce-588"><span class="linenos">588</span></a>
|
|
</span><span id="simplify_coalesce-589"><a href="#simplify_coalesce-589"><span class="linenos">589</span></a> <span class="c1"># This expression is more complex than when we started, but it will get simplified further</span>
|
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</span><span id="simplify_coalesce-590"><a href="#simplify_coalesce-590"><span class="linenos">590</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">paren</span><span class="p">(</span>
|
|
</span><span id="simplify_coalesce-591"><a href="#simplify_coalesce-591"><span class="linenos">591</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">or_</span><span class="p">(</span>
|
|
</span><span id="simplify_coalesce-592"><a href="#simplify_coalesce-592"><span class="linenos">592</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">and_</span><span class="p">(</span>
|
|
</span><span id="simplify_coalesce-593"><a href="#simplify_coalesce-593"><span class="linenos">593</span></a> <span class="n">coalesce</span><span class="o">.</span><span class="n">is_</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">null</span><span class="p">())</span><span class="o">.</span><span class="n">not_</span><span class="p">(</span><span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">),</span>
|
|
</span><span id="simplify_coalesce-594"><a href="#simplify_coalesce-594"><span class="linenos">594</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">copy</span><span class="p">(),</span>
|
|
</span><span id="simplify_coalesce-595"><a href="#simplify_coalesce-595"><span class="linenos">595</span></a> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span>
|
|
</span><span id="simplify_coalesce-596"><a href="#simplify_coalesce-596"><span class="linenos">596</span></a> <span class="p">),</span>
|
|
</span><span id="simplify_coalesce-597"><a href="#simplify_coalesce-597"><span class="linenos">597</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">and_</span><span class="p">(</span>
|
|
</span><span id="simplify_coalesce-598"><a href="#simplify_coalesce-598"><span class="linenos">598</span></a> <span class="n">coalesce</span><span class="o">.</span><span class="n">is_</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">null</span><span class="p">()),</span>
|
|
</span><span id="simplify_coalesce-599"><a href="#simplify_coalesce-599"><span class="linenos">599</span></a> <span class="nb">type</span><span class="p">(</span><span class="n">expression</span><span class="p">)(</span><span class="n">this</span><span class="o">=</span><span class="n">arg</span><span class="o">.</span><span class="n">copy</span><span class="p">(),</span> <span class="n">expression</span><span class="o">=</span><span class="n">other</span><span class="o">.</span><span class="n">copy</span><span class="p">()),</span>
|
|
</span><span id="simplify_coalesce-600"><a href="#simplify_coalesce-600"><span class="linenos">600</span></a> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span>
|
|
</span><span id="simplify_coalesce-601"><a href="#simplify_coalesce-601"><span class="linenos">601</span></a> <span class="p">),</span>
|
|
</span><span id="simplify_coalesce-602"><a href="#simplify_coalesce-602"><span class="linenos">602</span></a> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span>
|
|
</span><span id="simplify_coalesce-603"><a href="#simplify_coalesce-603"><span class="linenos">603</span></a> <span class="p">)</span>
|
|
</span><span id="simplify_coalesce-604"><a href="#simplify_coalesce-604"><span class="linenos">604</span></a> <span class="p">)</span>
|
|
</span></pre></div>
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</section>
|
|
<section id="CONCATS">
|
|
<div class="attr variable">
|
|
<span class="name">CONCATS</span> =
|
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<span class="default_value">(<class '<a href="../expressions.html#Concat">sqlglot.expressions.Concat</a>'>, <class '<a href="../expressions.html#DPipe">sqlglot.expressions.DPipe</a>'>)</span>
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</div>
|
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<a class="headerlink" href="#CONCATS"></a>
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</section>
|
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<section id="SAFE_CONCATS">
|
|
<div class="attr variable">
|
|
<span class="name">SAFE_CONCATS</span> =
|
|
<span class="default_value">(<class '<a href="../expressions.html#SafeConcat">sqlglot.expressions.SafeConcat</a>'>, <class '<a href="../expressions.html#SafeDPipe">sqlglot.expressions.SafeDPipe</a>'>)</span>
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</div>
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<a class="headerlink" href="#SAFE_CONCATS"></a>
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</section>
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<section id="simplify_concat">
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<input id="simplify_concat-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1">
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<div class="attr function">
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<span class="def">def</span>
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<span class="name">simplify_concat</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">expression</span></span><span class="return-annotation">):</span></span>
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<label class="view-source-button" for="simplify_concat-view-source"><span>View Source</span></label>
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</div>
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<a class="headerlink" href="#simplify_concat"></a>
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<div class="pdoc-code codehilite"><pre><span></span><span id="simplify_concat-611"><a href="#simplify_concat-611"><span class="linenos">611</span></a><span class="k">def</span> <span class="nf">simplify_concat</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span>
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</span><span id="simplify_concat-612"><a href="#simplify_concat-612"><span class="linenos">612</span></a><span class="w"> </span><span class="sd">"""Reduces all groups that contain string literals by concatenating them."""</span>
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</span><span id="simplify_concat-613"><a href="#simplify_concat-613"><span class="linenos">613</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">CONCATS</span><span class="p">)</span> <span class="ow">or</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">ConcatWs</span><span class="p">):</span>
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</span><span id="simplify_concat-614"><a href="#simplify_concat-614"><span class="linenos">614</span></a> <span class="k">return</span> <span class="n">expression</span>
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</span><span id="simplify_concat-615"><a href="#simplify_concat-615"><span class="linenos">615</span></a>
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</span><span id="simplify_concat-616"><a href="#simplify_concat-616"><span class="linenos">616</span></a> <span class="n">new_args</span> <span class="o">=</span> <span class="p">[]</span>
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</span><span id="simplify_concat-617"><a href="#simplify_concat-617"><span class="linenos">617</span></a> <span class="k">for</span> <span class="n">is_string_group</span><span class="p">,</span> <span class="n">group</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">groupby</span><span class="p">(</span>
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</span><span id="simplify_concat-618"><a href="#simplify_concat-618"><span class="linenos">618</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">expressions</span> <span class="ow">or</span> <span class="n">expression</span><span class="o">.</span><span class="n">flatten</span><span class="p">(),</span> <span class="k">lambda</span> <span class="n">e</span><span class="p">:</span> <span class="n">e</span><span class="o">.</span><span class="n">is_string</span>
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</span><span id="simplify_concat-619"><a href="#simplify_concat-619"><span class="linenos">619</span></a> <span class="p">):</span>
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</span><span id="simplify_concat-620"><a href="#simplify_concat-620"><span class="linenos">620</span></a> <span class="k">if</span> <span class="n">is_string_group</span><span class="p">:</span>
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</span><span id="simplify_concat-621"><a href="#simplify_concat-621"><span class="linenos">621</span></a> <span class="n">new_args</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="o">.</span><span class="n">string</span><span class="p">(</span><span class="s2">""</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">string</span><span class="o">.</span><span class="n">name</span> <span class="k">for</span> <span class="n">string</span> <span class="ow">in</span> <span class="n">group</span><span class="p">)))</span>
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</span><span id="simplify_concat-622"><a href="#simplify_concat-622"><span class="linenos">622</span></a> <span class="k">else</span><span class="p">:</span>
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</span><span id="simplify_concat-623"><a href="#simplify_concat-623"><span class="linenos">623</span></a> <span class="n">new_args</span><span class="o">.</span><span class="n">extend</span><span class="p">(</span><span class="n">group</span><span class="p">)</span>
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</span><span id="simplify_concat-624"><a href="#simplify_concat-624"><span class="linenos">624</span></a>
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</span><span id="simplify_concat-625"><a href="#simplify_concat-625"><span class="linenos">625</span></a> <span class="c1"># Ensures we preserve the right concat type, i.e. whether it's "safe" or not</span>
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</span><span id="simplify_concat-626"><a href="#simplify_concat-626"><span class="linenos">626</span></a> <span class="n">concat_type</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">SafeConcat</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">SAFE_CONCATS</span><span class="p">)</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">Concat</span>
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</span><span id="simplify_concat-627"><a href="#simplify_concat-627"><span class="linenos">627</span></a> <span class="k">return</span> <span class="n">new_args</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">new_args</span><span class="p">)</span> <span class="o">==</span> <span class="mi">1</span> <span class="k">else</span> <span class="n">concat_type</span><span class="p">(</span><span class="n">expressions</span><span class="o">=</span><span class="n">new_args</span><span class="p">)</span>
|
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</span></pre></div>
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<div class="docstring"><p>Reduces all groups that contain string literals by concatenating them.</p>
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</div>
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</section>
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<section id="DateRange">
|
|
<div class="attr variable">
|
|
<span class="name">DateRange</span> =
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<span class="default_value">typing.Tuple[datetime.date, datetime.date]</span>
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</div>
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<a class="headerlink" href="#DateRange"></a>
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</section>
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<section id="DateTruncBinaryTransform">
|
|
<div class="attr variable">
|
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<span class="name">DateTruncBinaryTransform</span> =
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<input id="DateTruncBinaryTransform-view-value" class="view-value-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1">
|
|
<label class="view-value-button pdoc-button" for="DateTruncBinaryTransform-view-value"></label><span class="default_value">typing.Callable[[<a href="../expressions.html#Expression">sqlglot.expressions.Expression</a>, datetime.date, str], typing.Optional[<a href="../expressions.html#Expression">sqlglot.expressions.Expression</a>]]</span>
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</div>
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|
<a class="headerlink" href="#DateTruncBinaryTransform"></a>
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</section>
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<section id="DATETRUNC_BINARY_COMPARISONS">
|
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<div class="attr variable">
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<span class="name">DATETRUNC_BINARY_COMPARISONS</span><span class="annotation">: Dict[Type[<a href="../expressions.html#Expression">sqlglot.expressions.Expression</a>], Callable[[<a href="../expressions.html#Expression">sqlglot.expressions.Expression</a>, datetime.date, str], Optional[<a href="../expressions.html#Expression">sqlglot.expressions.Expression</a>]]]</span> =
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|
<input id="DATETRUNC_BINARY_COMPARISONS-view-value" class="view-value-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1">
|
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<label class="view-value-button pdoc-button" for="DATETRUNC_BINARY_COMPARISONS-view-value"></label><span class="default_value">{<class '<a href="../expressions.html#LT">sqlglot.expressions.LT</a>'>: <function <lambda>>, <class '<a href="../expressions.html#GT">sqlglot.expressions.GT</a>'>: <function <lambda>>, <class '<a href="../expressions.html#LTE">sqlglot.expressions.LTE</a>'>: <function <lambda>>, <class '<a href="../expressions.html#GTE">sqlglot.expressions.GTE</a>'>: <function <lambda>>, <class '<a href="../expressions.html#EQ">sqlglot.expressions.EQ</a>'>: <function _datetrunc_eq>, <class '<a href="../expressions.html#NEQ">sqlglot.expressions.NEQ</a>'>: <function _datetrunc_neq>}</span>
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</div>
|
|
<a class="headerlink" href="#DATETRUNC_BINARY_COMPARISONS"></a>
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</section>
|
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<section id="DATETRUNC_COMPARISONS">
|
|
<div class="attr variable">
|
|
<span class="name">DATETRUNC_COMPARISONS</span> =
|
|
<input id="DATETRUNC_COMPARISONS-view-value" class="view-value-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1">
|
|
<label class="view-value-button pdoc-button" for="DATETRUNC_COMPARISONS-view-value"></label><span class="default_value">{<class '<a href="../expressions.html#EQ">sqlglot.expressions.EQ</a>'>, <class '<a href="../expressions.html#GTE">sqlglot.expressions.GTE</a>'>, <class '<a href="../expressions.html#NEQ">sqlglot.expressions.NEQ</a>'>, <class '<a href="../expressions.html#In">sqlglot.expressions.In</a>'>, <class '<a href="../expressions.html#LTE">sqlglot.expressions.LTE</a>'>, <class '<a href="../expressions.html#GT">sqlglot.expressions.GT</a>'>, <class '<a href="../expressions.html#LT">sqlglot.expressions.LT</a>'>}</span>
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</div>
|
|
<a class="headerlink" href="#DATETRUNC_COMPARISONS"></a>
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</section>
|
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<section id="simplify_datetrunc_predicate">
|
|
<input id="simplify_datetrunc_predicate-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1">
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<div class="attr function">
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|
<span class="def">def</span>
|
|
<span class="name">simplify_datetrunc_predicate</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">expression</span>, </span><span class="param"><span class="o">*</span><span class="n">args</span>, </span><span class="param"><span class="o">**</span><span class="n">kwargs</span></span><span class="return-annotation">):</span></span>
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<label class="view-source-button" for="simplify_datetrunc_predicate-view-source"><span>View Source</span></label>
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</div>
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<a class="headerlink" href="#simplify_datetrunc_predicate"></a>
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<div class="pdoc-code codehilite"><pre><span></span><span id="simplify_datetrunc_predicate-99"><a href="#simplify_datetrunc_predicate-99"><span class="linenos"> 99</span></a> <span class="k">def</span> <span class="nf">wrapped</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
|
|
</span><span id="simplify_datetrunc_predicate-100"><a href="#simplify_datetrunc_predicate-100"><span class="linenos">100</span></a> <span class="k">try</span><span class="p">:</span>
|
|
</span><span id="simplify_datetrunc_predicate-101"><a href="#simplify_datetrunc_predicate-101"><span class="linenos">101</span></a> <span class="k">return</span> <span class="n">func</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span>
|
|
</span><span id="simplify_datetrunc_predicate-102"><a href="#simplify_datetrunc_predicate-102"><span class="linenos">102</span></a> <span class="k">except</span> <span class="n">exceptions</span><span class="p">:</span>
|
|
</span><span id="simplify_datetrunc_predicate-103"><a href="#simplify_datetrunc_predicate-103"><span class="linenos">103</span></a> <span class="k">return</span> <span class="n">expression</span>
|
|
</span></pre></div>
|
|
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<div class="docstring"><p>Simplify expressions like <code>DATE_TRUNC('year', x) >= CAST('2021-01-01' AS DATE)</code></p>
|
|
</div>
|
|
|
|
|
|
</section>
|
|
<section id="JOINS">
|
|
<div class="attr variable">
|
|
<span class="name">JOINS</span> =
|
|
<span class="default_value">{('', ''), ('RIGHT', ''), ('', 'INNER'), ('RIGHT', 'OUTER')}</span>
|
|
|
|
|
|
</div>
|
|
<a class="headerlink" href="#JOINS"></a>
|
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</section>
|
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<section id="remove_where_true">
|
|
<input id="remove_where_true-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1">
|
|
<div class="attr function">
|
|
|
|
<span class="def">def</span>
|
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<span class="name">remove_where_true</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">expression</span></span><span class="return-annotation">):</span></span>
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<label class="view-source-button" for="remove_where_true-view-source"><span>View Source</span></label>
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</div>
|
|
<a class="headerlink" href="#remove_where_true"></a>
|
|
<div class="pdoc-code codehilite"><pre><span></span><span id="remove_where_true-765"><a href="#remove_where_true-765"><span class="linenos">765</span></a><span class="k">def</span> <span class="nf">remove_where_true</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span>
|
|
</span><span id="remove_where_true-766"><a href="#remove_where_true-766"><span class="linenos">766</span></a> <span class="k">for</span> <span class="n">where</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Where</span><span class="p">):</span>
|
|
</span><span id="remove_where_true-767"><a href="#remove_where_true-767"><span class="linenos">767</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">where</span><span class="o">.</span><span class="n">this</span><span class="p">):</span>
|
|
</span><span id="remove_where_true-768"><a href="#remove_where_true-768"><span class="linenos">768</span></a> <span class="n">where</span><span class="o">.</span><span class="n">parent</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"where"</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span>
|
|
</span><span id="remove_where_true-769"><a href="#remove_where_true-769"><span class="linenos">769</span></a> <span class="k">for</span> <span class="n">join</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Join</span><span class="p">):</span>
|
|
</span><span id="remove_where_true-770"><a href="#remove_where_true-770"><span class="linenos">770</span></a> <span class="k">if</span> <span class="p">(</span>
|
|
</span><span id="remove_where_true-771"><a href="#remove_where_true-771"><span class="linenos">771</span></a> <span class="n">always_true</span><span class="p">(</span><span class="n">join</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"on"</span><span class="p">))</span>
|
|
</span><span id="remove_where_true-772"><a href="#remove_where_true-772"><span class="linenos">772</span></a> <span class="ow">and</span> <span class="ow">not</span> <span class="n">join</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"using"</span><span class="p">)</span>
|
|
</span><span id="remove_where_true-773"><a href="#remove_where_true-773"><span class="linenos">773</span></a> <span class="ow">and</span> <span class="ow">not</span> <span class="n">join</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"method"</span><span class="p">)</span>
|
|
</span><span id="remove_where_true-774"><a href="#remove_where_true-774"><span class="linenos">774</span></a> <span class="ow">and</span> <span class="p">(</span><span class="n">join</span><span class="o">.</span><span class="n">side</span><span class="p">,</span> <span class="n">join</span><span class="o">.</span><span class="n">kind</span><span class="p">)</span> <span class="ow">in</span> <span class="n">JOINS</span>
|
|
</span><span id="remove_where_true-775"><a href="#remove_where_true-775"><span class="linenos">775</span></a> <span class="p">):</span>
|
|
</span><span id="remove_where_true-776"><a href="#remove_where_true-776"><span class="linenos">776</span></a> <span class="n">join</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"on"</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span>
|
|
</span><span id="remove_where_true-777"><a href="#remove_where_true-777"><span class="linenos">777</span></a> <span class="n">join</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"side"</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span>
|
|
</span><span id="remove_where_true-778"><a href="#remove_where_true-778"><span class="linenos">778</span></a> <span class="n">join</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"kind"</span><span class="p">,</span> <span class="s2">"CROSS"</span><span class="p">)</span>
|
|
</span></pre></div>
|
|
|
|
|
|
|
|
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|
</section>
|
|
<section id="always_true">
|
|
<input id="always_true-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1">
|
|
<div class="attr function">
|
|
|
|
<span class="def">def</span>
|
|
<span class="name">always_true</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">expression</span></span><span class="return-annotation">):</span></span>
|
|
|
|
<label class="view-source-button" for="always_true-view-source"><span>View Source</span></label>
|
|
|
|
</div>
|
|
<a class="headerlink" href="#always_true"></a>
|
|
<div class="pdoc-code codehilite"><pre><span></span><span id="always_true-781"><a href="#always_true-781"><span class="linenos">781</span></a><span class="k">def</span> <span class="nf">always_true</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span>
|
|
</span><span id="always_true-782"><a href="#always_true-782"><span class="linenos">782</span></a> <span class="k">return</span> <span class="p">(</span><span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Boolean</span><span class="p">)</span> <span class="ow">and</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">)</span> <span class="ow">or</span> <span class="nb">isinstance</span><span class="p">(</span>
|
|
</span><span id="always_true-783"><a href="#always_true-783"><span class="linenos">783</span></a> <span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span>
|
|
</span><span id="always_true-784"><a href="#always_true-784"><span class="linenos">784</span></a> <span class="p">)</span>
|
|
</span></pre></div>
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</section>
|
|
<section id="is_complement">
|
|
<input id="is_complement-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1">
|
|
<div class="attr function">
|
|
|
|
<span class="def">def</span>
|
|
<span class="name">is_complement</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">a</span>, </span><span class="param"><span class="n">b</span></span><span class="return-annotation">):</span></span>
|
|
|
|
<label class="view-source-button" for="is_complement-view-source"><span>View Source</span></label>
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</div>
|
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<a class="headerlink" href="#is_complement"></a>
|
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<div class="pdoc-code codehilite"><pre><span></span><span id="is_complement-787"><a href="#is_complement-787"><span class="linenos">787</span></a><span class="k">def</span> <span class="nf">is_complement</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">):</span>
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</span><span id="is_complement-788"><a href="#is_complement-788"><span class="linenos">788</span></a> <span class="k">return</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Not</span><span class="p">)</span> <span class="ow">and</span> <span class="n">b</span><span class="o">.</span><span class="n">this</span> <span class="o">==</span> <span class="n">a</span>
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</span></pre></div>
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</section>
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<section id="is_false">
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<input id="is_false-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1">
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<div class="attr function">
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<span class="def">def</span>
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<span class="name">is_false</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">a</span><span class="p">:</span> <span class="n"><a href="../expressions.html#Expression">sqlglot.expressions.Expression</a></span></span><span class="return-annotation">) -> <span class="nb">bool</span>:</span></span>
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<label class="view-source-button" for="is_false-view-source"><span>View Source</span></label>
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</div>
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<a class="headerlink" href="#is_false"></a>
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<div class="pdoc-code codehilite"><pre><span></span><span id="is_false-791"><a href="#is_false-791"><span class="linenos">791</span></a><span class="k">def</span> <span class="nf">is_false</span><span class="p">(</span><span class="n">a</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">)</span> <span class="o">-></span> <span class="nb">bool</span><span class="p">:</span>
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</span><span id="is_false-792"><a href="#is_false-792"><span class="linenos">792</span></a> <span class="k">return</span> <span class="nb">type</span><span class="p">(</span><span class="n">a</span><span class="p">)</span> <span class="ow">is</span> <span class="n">exp</span><span class="o">.</span><span class="n">Boolean</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">a</span><span class="o">.</span><span class="n">this</span>
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</span></pre></div>
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</section>
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<section id="is_null">
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<input id="is_null-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1">
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<div class="attr function">
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<span class="def">def</span>
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<span class="name">is_null</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">a</span><span class="p">:</span> <span class="n"><a href="../expressions.html#Expression">sqlglot.expressions.Expression</a></span></span><span class="return-annotation">) -> <span class="nb">bool</span>:</span></span>
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<label class="view-source-button" for="is_null-view-source"><span>View Source</span></label>
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</div>
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<a class="headerlink" href="#is_null"></a>
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<div class="pdoc-code codehilite"><pre><span></span><span id="is_null-795"><a href="#is_null-795"><span class="linenos">795</span></a><span class="k">def</span> <span class="nf">is_null</span><span class="p">(</span><span class="n">a</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">)</span> <span class="o">-></span> <span class="nb">bool</span><span class="p">:</span>
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|
</span><span id="is_null-796"><a href="#is_null-796"><span class="linenos">796</span></a> <span class="k">return</span> <span class="nb">type</span><span class="p">(</span><span class="n">a</span><span class="p">)</span> <span class="ow">is</span> <span class="n">exp</span><span class="o">.</span><span class="n">Null</span>
|
|
</span></pre></div>
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</section>
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<section id="eval_boolean">
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<input id="eval_boolean-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1">
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<div class="attr function">
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<span class="def">def</span>
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<span class="name">eval_boolean</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">expression</span>, </span><span class="param"><span class="n">a</span>, </span><span class="param"><span class="n">b</span></span><span class="return-annotation">):</span></span>
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<label class="view-source-button" for="eval_boolean-view-source"><span>View Source</span></label>
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</div>
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<a class="headerlink" href="#eval_boolean"></a>
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<div class="pdoc-code codehilite"><pre><span></span><span id="eval_boolean-799"><a href="#eval_boolean-799"><span class="linenos">799</span></a><span class="k">def</span> <span class="nf">eval_boolean</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">):</span>
|
|
</span><span id="eval_boolean-800"><a href="#eval_boolean-800"><span class="linenos">800</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">EQ</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Is</span><span class="p">)):</span>
|
|
</span><span id="eval_boolean-801"><a href="#eval_boolean-801"><span class="linenos">801</span></a> <span class="k">return</span> <span class="n">boolean_literal</span><span class="p">(</span><span class="n">a</span> <span class="o">==</span> <span class="n">b</span><span class="p">)</span>
|
|
</span><span id="eval_boolean-802"><a href="#eval_boolean-802"><span class="linenos">802</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">NEQ</span><span class="p">):</span>
|
|
</span><span id="eval_boolean-803"><a href="#eval_boolean-803"><span class="linenos">803</span></a> <span class="k">return</span> <span class="n">boolean_literal</span><span class="p">(</span><span class="n">a</span> <span class="o">!=</span> <span class="n">b</span><span class="p">)</span>
|
|
</span><span id="eval_boolean-804"><a href="#eval_boolean-804"><span class="linenos">804</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">GT</span><span class="p">):</span>
|
|
</span><span id="eval_boolean-805"><a href="#eval_boolean-805"><span class="linenos">805</span></a> <span class="k">return</span> <span class="n">boolean_literal</span><span class="p">(</span><span class="n">a</span> <span class="o">></span> <span class="n">b</span><span class="p">)</span>
|
|
</span><span id="eval_boolean-806"><a href="#eval_boolean-806"><span class="linenos">806</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">GTE</span><span class="p">):</span>
|
|
</span><span id="eval_boolean-807"><a href="#eval_boolean-807"><span class="linenos">807</span></a> <span class="k">return</span> <span class="n">boolean_literal</span><span class="p">(</span><span class="n">a</span> <span class="o">>=</span> <span class="n">b</span><span class="p">)</span>
|
|
</span><span id="eval_boolean-808"><a href="#eval_boolean-808"><span class="linenos">808</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">LT</span><span class="p">):</span>
|
|
</span><span id="eval_boolean-809"><a href="#eval_boolean-809"><span class="linenos">809</span></a> <span class="k">return</span> <span class="n">boolean_literal</span><span class="p">(</span><span class="n">a</span> <span class="o"><</span> <span class="n">b</span><span class="p">)</span>
|
|
</span><span id="eval_boolean-810"><a href="#eval_boolean-810"><span class="linenos">810</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">LTE</span><span class="p">):</span>
|
|
</span><span id="eval_boolean-811"><a href="#eval_boolean-811"><span class="linenos">811</span></a> <span class="k">return</span> <span class="n">boolean_literal</span><span class="p">(</span><span class="n">a</span> <span class="o"><=</span> <span class="n">b</span><span class="p">)</span>
|
|
</span><span id="eval_boolean-812"><a href="#eval_boolean-812"><span class="linenos">812</span></a> <span class="k">return</span> <span class="kc">None</span>
|
|
</span></pre></div>
|
|
|
|
|
|
|
|
|
|
</section>
|
|
<section id="cast_as_date">
|
|
<input id="cast_as_date-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1">
|
|
<div class="attr function">
|
|
|
|
<span class="def">def</span>
|
|
<span class="name">cast_as_date</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">value</span><span class="p">:</span> <span class="n">Any</span></span><span class="return-annotation">) -> <span class="n">Optional</span><span class="p">[</span><span class="n">datetime</span><span class="o">.</span><span class="n">date</span><span class="p">]</span>:</span></span>
|
|
|
|
<label class="view-source-button" for="cast_as_date-view-source"><span>View Source</span></label>
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|
|
|
</div>
|
|
<a class="headerlink" href="#cast_as_date"></a>
|
|
<div class="pdoc-code codehilite"><pre><span></span><span id="cast_as_date-815"><a href="#cast_as_date-815"><span class="linenos">815</span></a><span class="k">def</span> <span class="nf">cast_as_date</span><span class="p">(</span><span class="n">value</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Any</span><span class="p">)</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="n">datetime</span><span class="o">.</span><span class="n">date</span><span class="p">]:</span>
|
|
</span><span id="cast_as_date-816"><a href="#cast_as_date-816"><span class="linenos">816</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">value</span><span class="p">,</span> <span class="n">datetime</span><span class="o">.</span><span class="n">datetime</span><span class="p">):</span>
|
|
</span><span id="cast_as_date-817"><a href="#cast_as_date-817"><span class="linenos">817</span></a> <span class="k">return</span> <span class="n">value</span><span class="o">.</span><span class="n">date</span><span class="p">()</span>
|
|
</span><span id="cast_as_date-818"><a href="#cast_as_date-818"><span class="linenos">818</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">value</span><span class="p">,</span> <span class="n">datetime</span><span class="o">.</span><span class="n">date</span><span class="p">):</span>
|
|
</span><span id="cast_as_date-819"><a href="#cast_as_date-819"><span class="linenos">819</span></a> <span class="k">return</span> <span class="n">value</span>
|
|
</span><span id="cast_as_date-820"><a href="#cast_as_date-820"><span class="linenos">820</span></a> <span class="k">try</span><span class="p">:</span>
|
|
</span><span id="cast_as_date-821"><a href="#cast_as_date-821"><span class="linenos">821</span></a> <span class="k">return</span> <span class="n">datetime</span><span class="o">.</span><span class="n">datetime</span><span class="o">.</span><span class="n">fromisoformat</span><span class="p">(</span><span class="n">value</span><span class="p">)</span><span class="o">.</span><span class="n">date</span><span class="p">()</span>
|
|
</span><span id="cast_as_date-822"><a href="#cast_as_date-822"><span class="linenos">822</span></a> <span class="k">except</span> <span class="ne">ValueError</span><span class="p">:</span>
|
|
</span><span id="cast_as_date-823"><a href="#cast_as_date-823"><span class="linenos">823</span></a> <span class="k">return</span> <span class="kc">None</span>
|
|
</span></pre></div>
|
|
|
|
|
|
|
|
|
|
</section>
|
|
<section id="cast_as_datetime">
|
|
<input id="cast_as_datetime-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1">
|
|
<div class="attr function">
|
|
|
|
<span class="def">def</span>
|
|
<span class="name">cast_as_datetime</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">value</span><span class="p">:</span> <span class="n">Any</span></span><span class="return-annotation">) -> <span class="n">Optional</span><span class="p">[</span><span class="n">datetime</span><span class="o">.</span><span class="n">datetime</span><span class="p">]</span>:</span></span>
|
|
|
|
<label class="view-source-button" for="cast_as_datetime-view-source"><span>View Source</span></label>
|
|
|
|
</div>
|
|
<a class="headerlink" href="#cast_as_datetime"></a>
|
|
<div class="pdoc-code codehilite"><pre><span></span><span id="cast_as_datetime-826"><a href="#cast_as_datetime-826"><span class="linenos">826</span></a><span class="k">def</span> <span class="nf">cast_as_datetime</span><span class="p">(</span><span class="n">value</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Any</span><span class="p">)</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="n">datetime</span><span class="o">.</span><span class="n">datetime</span><span class="p">]:</span>
|
|
</span><span id="cast_as_datetime-827"><a href="#cast_as_datetime-827"><span class="linenos">827</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">value</span><span class="p">,</span> <span class="n">datetime</span><span class="o">.</span><span class="n">datetime</span><span class="p">):</span>
|
|
</span><span id="cast_as_datetime-828"><a href="#cast_as_datetime-828"><span class="linenos">828</span></a> <span class="k">return</span> <span class="n">value</span>
|
|
</span><span id="cast_as_datetime-829"><a href="#cast_as_datetime-829"><span class="linenos">829</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">value</span><span class="p">,</span> <span class="n">datetime</span><span class="o">.</span><span class="n">date</span><span class="p">):</span>
|
|
</span><span id="cast_as_datetime-830"><a href="#cast_as_datetime-830"><span class="linenos">830</span></a> <span class="k">return</span> <span class="n">datetime</span><span class="o">.</span><span class="n">datetime</span><span class="p">(</span><span class="n">year</span><span class="o">=</span><span class="n">value</span><span class="o">.</span><span class="n">year</span><span class="p">,</span> <span class="n">month</span><span class="o">=</span><span class="n">value</span><span class="o">.</span><span class="n">month</span><span class="p">,</span> <span class="n">day</span><span class="o">=</span><span class="n">value</span><span class="o">.</span><span class="n">day</span><span class="p">)</span>
|
|
</span><span id="cast_as_datetime-831"><a href="#cast_as_datetime-831"><span class="linenos">831</span></a> <span class="k">try</span><span class="p">:</span>
|
|
</span><span id="cast_as_datetime-832"><a href="#cast_as_datetime-832"><span class="linenos">832</span></a> <span class="k">return</span> <span class="n">datetime</span><span class="o">.</span><span class="n">datetime</span><span class="o">.</span><span class="n">fromisoformat</span><span class="p">(</span><span class="n">value</span><span class="p">)</span>
|
|
</span><span id="cast_as_datetime-833"><a href="#cast_as_datetime-833"><span class="linenos">833</span></a> <span class="k">except</span> <span class="ne">ValueError</span><span class="p">:</span>
|
|
</span><span id="cast_as_datetime-834"><a href="#cast_as_datetime-834"><span class="linenos">834</span></a> <span class="k">return</span> <span class="kc">None</span>
|
|
</span></pre></div>
|
|
|
|
|
|
|
|
|
|
</section>
|
|
<section id="cast_value">
|
|
<input id="cast_value-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1">
|
|
<div class="attr function">
|
|
|
|
<span class="def">def</span>
|
|
<span class="name">cast_value</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">value</span><span class="p">:</span> <span class="n">Any</span>, </span><span class="param"><span class="n">to</span><span class="p">:</span> <span class="n"><a href="../expressions.html#DataType">sqlglot.expressions.DataType</a></span></span><span class="return-annotation">) -> <span class="n">Optional</span><span class="p">[</span><span class="n">datetime</span><span class="o">.</span><span class="n">date</span><span class="p">]</span>:</span></span>
|
|
|
|
<label class="view-source-button" for="cast_value-view-source"><span>View Source</span></label>
|
|
|
|
</div>
|
|
<a class="headerlink" href="#cast_value"></a>
|
|
<div class="pdoc-code codehilite"><pre><span></span><span id="cast_value-837"><a href="#cast_value-837"><span class="linenos">837</span></a><span class="k">def</span> <span class="nf">cast_value</span><span class="p">(</span><span class="n">value</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Any</span><span class="p">,</span> <span class="n">to</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="p">)</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="n">t</span><span class="o">.</span><span class="n">Union</span><span class="p">[</span><span class="n">datetime</span><span class="o">.</span><span class="n">date</span><span class="p">,</span> <span class="n">datetime</span><span class="o">.</span><span class="n">date</span><span class="p">]]:</span>
|
|
</span><span id="cast_value-838"><a href="#cast_value-838"><span class="linenos">838</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">value</span><span class="p">:</span>
|
|
</span><span id="cast_value-839"><a href="#cast_value-839"><span class="linenos">839</span></a> <span class="k">return</span> <span class="kc">None</span>
|
|
</span><span id="cast_value-840"><a href="#cast_value-840"><span class="linenos">840</span></a> <span class="k">if</span> <span class="n">to</span><span class="o">.</span><span class="n">is_type</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATE</span><span class="p">):</span>
|
|
</span><span id="cast_value-841"><a href="#cast_value-841"><span class="linenos">841</span></a> <span class="k">return</span> <span class="n">cast_as_date</span><span class="p">(</span><span class="n">value</span><span class="p">)</span>
|
|
</span><span id="cast_value-842"><a href="#cast_value-842"><span class="linenos">842</span></a> <span class="k">if</span> <span class="n">to</span><span class="o">.</span><span class="n">is_type</span><span class="p">(</span><span class="o">*</span><span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">TEMPORAL_TYPES</span><span class="p">):</span>
|
|
</span><span id="cast_value-843"><a href="#cast_value-843"><span class="linenos">843</span></a> <span class="k">return</span> <span class="n">cast_as_datetime</span><span class="p">(</span><span class="n">value</span><span class="p">)</span>
|
|
</span><span id="cast_value-844"><a href="#cast_value-844"><span class="linenos">844</span></a> <span class="k">return</span> <span class="kc">None</span>
|
|
</span></pre></div>
|
|
|
|
|
|
|
|
|
|
</section>
|
|
<section id="extract_date">
|
|
<input id="extract_date-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1">
|
|
<div class="attr function">
|
|
|
|
<span class="def">def</span>
|
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<span class="name">extract_date</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">cast</span><span class="p">:</span> <span class="n"><a href="../expressions.html#Expression">sqlglot.expressions.Expression</a></span></span><span class="return-annotation">) -> <span class="n">Optional</span><span class="p">[</span><span class="n">datetime</span><span class="o">.</span><span class="n">date</span><span class="p">]</span>:</span></span>
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<label class="view-source-button" for="extract_date-view-source"><span>View Source</span></label>
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</div>
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<a class="headerlink" href="#extract_date"></a>
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<div class="pdoc-code codehilite"><pre><span></span><span id="extract_date-847"><a href="#extract_date-847"><span class="linenos">847</span></a><span class="k">def</span> <span class="nf">extract_date</span><span class="p">(</span><span class="n">cast</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">)</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="n">t</span><span class="o">.</span><span class="n">Union</span><span class="p">[</span><span class="n">datetime</span><span class="o">.</span><span class="n">date</span><span class="p">,</span> <span class="n">datetime</span><span class="o">.</span><span class="n">date</span><span class="p">]]:</span>
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</span><span id="extract_date-848"><a href="#extract_date-848"><span class="linenos">848</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">cast</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Cast</span><span class="p">):</span>
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</span><span id="extract_date-849"><a href="#extract_date-849"><span class="linenos">849</span></a> <span class="n">to</span> <span class="o">=</span> <span class="n">cast</span><span class="o">.</span><span class="n">to</span>
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</span><span id="extract_date-850"><a href="#extract_date-850"><span class="linenos">850</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">cast</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">TsOrDsToDate</span><span class="p">):</span>
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</span><span id="extract_date-851"><a href="#extract_date-851"><span class="linenos">851</span></a> <span class="n">to</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">build</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATE</span><span class="p">)</span>
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</span><span id="extract_date-852"><a href="#extract_date-852"><span class="linenos">852</span></a> <span class="k">else</span><span class="p">:</span>
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</span><span id="extract_date-853"><a href="#extract_date-853"><span class="linenos">853</span></a> <span class="k">return</span> <span class="kc">None</span>
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</span><span id="extract_date-854"><a href="#extract_date-854"><span class="linenos">854</span></a>
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</span><span id="extract_date-855"><a href="#extract_date-855"><span class="linenos">855</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">cast</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="p">):</span>
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</span><span id="extract_date-856"><a href="#extract_date-856"><span class="linenos">856</span></a> <span class="n">value</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Any</span> <span class="o">=</span> <span class="n">cast</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">name</span>
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</span><span id="extract_date-857"><a href="#extract_date-857"><span class="linenos">857</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">cast</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Cast</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">TsOrDsToDate</span><span class="p">)):</span>
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</span><span id="extract_date-858"><a href="#extract_date-858"><span class="linenos">858</span></a> <span class="n">value</span> <span class="o">=</span> <span class="n">extract_date</span><span class="p">(</span><span class="n">cast</span><span class="o">.</span><span class="n">this</span><span class="p">)</span>
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</span><span id="extract_date-859"><a href="#extract_date-859"><span class="linenos">859</span></a> <span class="k">else</span><span class="p">:</span>
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</span><span id="extract_date-860"><a href="#extract_date-860"><span class="linenos">860</span></a> <span class="k">return</span> <span class="kc">None</span>
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</span><span id="extract_date-861"><a href="#extract_date-861"><span class="linenos">861</span></a> <span class="k">return</span> <span class="n">cast_value</span><span class="p">(</span><span class="n">value</span><span class="p">,</span> <span class="n">to</span><span class="p">)</span>
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</span></pre></div>
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</section>
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<section id="extract_interval">
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<input id="extract_interval-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1">
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<div class="attr function">
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<span class="def">def</span>
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<span class="name">extract_interval</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">expression</span></span><span class="return-annotation">):</span></span>
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<label class="view-source-button" for="extract_interval-view-source"><span>View Source</span></label>
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</div>
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<a class="headerlink" href="#extract_interval"></a>
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<div class="pdoc-code codehilite"><pre><span></span><span id="extract_interval-868"><a href="#extract_interval-868"><span class="linenos">868</span></a><span class="k">def</span> <span class="nf">extract_interval</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span>
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</span><span id="extract_interval-869"><a href="#extract_interval-869"><span class="linenos">869</span></a> <span class="n">n</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">name</span><span class="p">)</span>
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</span><span id="extract_interval-870"><a href="#extract_interval-870"><span class="linenos">870</span></a> <span class="n">unit</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">text</span><span class="p">(</span><span class="s2">"unit"</span><span class="p">)</span><span class="o">.</span><span class="n">lower</span><span class="p">()</span>
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</span><span id="extract_interval-871"><a href="#extract_interval-871"><span class="linenos">871</span></a>
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</span><span id="extract_interval-872"><a href="#extract_interval-872"><span class="linenos">872</span></a> <span class="k">try</span><span class="p">:</span>
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</span><span id="extract_interval-873"><a href="#extract_interval-873"><span class="linenos">873</span></a> <span class="k">return</span> <span class="n">interval</span><span class="p">(</span><span class="n">unit</span><span class="p">,</span> <span class="n">n</span><span class="p">)</span>
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</span><span id="extract_interval-874"><a href="#extract_interval-874"><span class="linenos">874</span></a> <span class="k">except</span> <span class="p">(</span><span class="n">UnsupportedUnit</span><span class="p">,</span> <span class="ne">ModuleNotFoundError</span><span class="p">):</span>
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</span><span id="extract_interval-875"><a href="#extract_interval-875"><span class="linenos">875</span></a> <span class="k">return</span> <span class="kc">None</span>
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</span></pre></div>
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</section>
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<section id="date_literal">
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<input id="date_literal-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1">
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<div class="attr function">
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<span class="def">def</span>
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<span class="name">date_literal</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">date</span></span><span class="return-annotation">):</span></span>
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<label class="view-source-button" for="date_literal-view-source"><span>View Source</span></label>
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</div>
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<a class="headerlink" href="#date_literal"></a>
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<div class="pdoc-code codehilite"><pre><span></span><span id="date_literal-878"><a href="#date_literal-878"><span class="linenos">878</span></a><span class="k">def</span> <span class="nf">date_literal</span><span class="p">(</span><span class="n">date</span><span class="p">):</span>
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</span><span id="date_literal-879"><a href="#date_literal-879"><span class="linenos">879</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">cast</span><span class="p">(</span>
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</span><span id="date_literal-880"><a href="#date_literal-880"><span class="linenos">880</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="o">.</span><span class="n">string</span><span class="p">(</span><span class="n">date</span><span class="p">),</span>
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</span><span id="date_literal-881"><a href="#date_literal-881"><span class="linenos">881</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATETIME</span>
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</span><span id="date_literal-882"><a href="#date_literal-882"><span class="linenos">882</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">date</span><span class="p">,</span> <span class="n">datetime</span><span class="o">.</span><span class="n">datetime</span><span class="p">)</span>
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</span><span id="date_literal-883"><a href="#date_literal-883"><span class="linenos">883</span></a> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATE</span><span class="p">,</span>
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</span><span id="date_literal-884"><a href="#date_literal-884"><span class="linenos">884</span></a> <span class="p">)</span>
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</span></pre></div>
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</section>
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<section id="interval">
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<input id="interval-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1">
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<div class="attr function">
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<span class="def">def</span>
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<span class="name">interval</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">unit</span><span class="p">:</span> <span class="nb">str</span>, </span><span class="param"><span class="n">n</span><span class="p">:</span> <span class="nb">int</span> <span class="o">=</span> <span class="mi">1</span></span><span class="return-annotation">):</span></span>
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<label class="view-source-button" for="interval-view-source"><span>View Source</span></label>
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</div>
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<a class="headerlink" href="#interval"></a>
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<div class="pdoc-code codehilite"><pre><span></span><span id="interval-887"><a href="#interval-887"><span class="linenos">887</span></a><span class="k">def</span> <span class="nf">interval</span><span class="p">(</span><span class="n">unit</span><span class="p">:</span> <span class="nb">str</span><span class="p">,</span> <span class="n">n</span><span class="p">:</span> <span class="nb">int</span> <span class="o">=</span> <span class="mi">1</span><span class="p">):</span>
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</span><span id="interval-888"><a href="#interval-888"><span class="linenos">888</span></a> <span class="kn">from</span> <span class="nn">dateutil.relativedelta</span> <span class="kn">import</span> <span class="n">relativedelta</span>
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</span><span id="interval-889"><a href="#interval-889"><span class="linenos">889</span></a>
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</span><span id="interval-890"><a href="#interval-890"><span class="linenos">890</span></a> <span class="k">if</span> <span class="n">unit</span> <span class="o">==</span> <span class="s2">"year"</span><span class="p">:</span>
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</span><span id="interval-891"><a href="#interval-891"><span class="linenos">891</span></a> <span class="k">return</span> <span class="n">relativedelta</span><span class="p">(</span><span class="n">years</span><span class="o">=</span><span class="mi">1</span> <span class="o">*</span> <span class="n">n</span><span class="p">)</span>
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</span><span id="interval-892"><a href="#interval-892"><span class="linenos">892</span></a> <span class="k">if</span> <span class="n">unit</span> <span class="o">==</span> <span class="s2">"quarter"</span><span class="p">:</span>
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</span><span id="interval-893"><a href="#interval-893"><span class="linenos">893</span></a> <span class="k">return</span> <span class="n">relativedelta</span><span class="p">(</span><span class="n">months</span><span class="o">=</span><span class="mi">3</span> <span class="o">*</span> <span class="n">n</span><span class="p">)</span>
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</span><span id="interval-894"><a href="#interval-894"><span class="linenos">894</span></a> <span class="k">if</span> <span class="n">unit</span> <span class="o">==</span> <span class="s2">"month"</span><span class="p">:</span>
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</span><span id="interval-895"><a href="#interval-895"><span class="linenos">895</span></a> <span class="k">return</span> <span class="n">relativedelta</span><span class="p">(</span><span class="n">months</span><span class="o">=</span><span class="mi">1</span> <span class="o">*</span> <span class="n">n</span><span class="p">)</span>
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</span><span id="interval-896"><a href="#interval-896"><span class="linenos">896</span></a> <span class="k">if</span> <span class="n">unit</span> <span class="o">==</span> <span class="s2">"week"</span><span class="p">:</span>
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</span><span id="interval-897"><a href="#interval-897"><span class="linenos">897</span></a> <span class="k">return</span> <span class="n">relativedelta</span><span class="p">(</span><span class="n">weeks</span><span class="o">=</span><span class="mi">1</span> <span class="o">*</span> <span class="n">n</span><span class="p">)</span>
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</span><span id="interval-898"><a href="#interval-898"><span class="linenos">898</span></a> <span class="k">if</span> <span class="n">unit</span> <span class="o">==</span> <span class="s2">"day"</span><span class="p">:</span>
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</span><span id="interval-899"><a href="#interval-899"><span class="linenos">899</span></a> <span class="k">return</span> <span class="n">relativedelta</span><span class="p">(</span><span class="n">days</span><span class="o">=</span><span class="mi">1</span> <span class="o">*</span> <span class="n">n</span><span class="p">)</span>
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</span><span id="interval-900"><a href="#interval-900"><span class="linenos">900</span></a> <span class="k">if</span> <span class="n">unit</span> <span class="o">==</span> <span class="s2">"hour"</span><span class="p">:</span>
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</span><span id="interval-901"><a href="#interval-901"><span class="linenos">901</span></a> <span class="k">return</span> <span class="n">relativedelta</span><span class="p">(</span><span class="n">hours</span><span class="o">=</span><span class="mi">1</span> <span class="o">*</span> <span class="n">n</span><span class="p">)</span>
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</span><span id="interval-902"><a href="#interval-902"><span class="linenos">902</span></a> <span class="k">if</span> <span class="n">unit</span> <span class="o">==</span> <span class="s2">"minute"</span><span class="p">:</span>
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</span><span id="interval-903"><a href="#interval-903"><span class="linenos">903</span></a> <span class="k">return</span> <span class="n">relativedelta</span><span class="p">(</span><span class="n">minutes</span><span class="o">=</span><span class="mi">1</span> <span class="o">*</span> <span class="n">n</span><span class="p">)</span>
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</span><span id="interval-904"><a href="#interval-904"><span class="linenos">904</span></a> <span class="k">if</span> <span class="n">unit</span> <span class="o">==</span> <span class="s2">"second"</span><span class="p">:</span>
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</span><span id="interval-905"><a href="#interval-905"><span class="linenos">905</span></a> <span class="k">return</span> <span class="n">relativedelta</span><span class="p">(</span><span class="n">seconds</span><span class="o">=</span><span class="mi">1</span> <span class="o">*</span> <span class="n">n</span><span class="p">)</span>
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</span><span id="interval-906"><a href="#interval-906"><span class="linenos">906</span></a>
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</span><span id="interval-907"><a href="#interval-907"><span class="linenos">907</span></a> <span class="k">raise</span> <span class="n">UnsupportedUnit</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Unsupported unit: </span><span class="si">{</span><span class="n">unit</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span>
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</span></pre></div>
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</section>
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<section id="date_floor">
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<input id="date_floor-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1">
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<div class="attr function">
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<span class="def">def</span>
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<span class="name">date_floor</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">d</span><span class="p">:</span> <span class="n">datetime</span><span class="o">.</span><span class="n">date</span>, </span><span class="param"><span class="n">unit</span><span class="p">:</span> <span class="nb">str</span></span><span class="return-annotation">) -> <span class="n">datetime</span><span class="o">.</span><span class="n">date</span>:</span></span>
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<label class="view-source-button" for="date_floor-view-source"><span>View Source</span></label>
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</div>
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<a class="headerlink" href="#date_floor"></a>
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<div class="pdoc-code codehilite"><pre><span></span><span id="date_floor-910"><a href="#date_floor-910"><span class="linenos">910</span></a><span class="k">def</span> <span class="nf">date_floor</span><span class="p">(</span><span class="n">d</span><span class="p">:</span> <span class="n">datetime</span><span class="o">.</span><span class="n">date</span><span class="p">,</span> <span class="n">unit</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-></span> <span class="n">datetime</span><span class="o">.</span><span class="n">date</span><span class="p">:</span>
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</span><span id="date_floor-911"><a href="#date_floor-911"><span class="linenos">911</span></a> <span class="k">if</span> <span class="n">unit</span> <span class="o">==</span> <span class="s2">"year"</span><span class="p">:</span>
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</span><span id="date_floor-912"><a href="#date_floor-912"><span class="linenos">912</span></a> <span class="k">return</span> <span class="n">d</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">month</span><span class="o">=</span><span class="mi">1</span><span class="p">,</span> <span class="n">day</span><span class="o">=</span><span class="mi">1</span><span class="p">)</span>
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</span><span id="date_floor-913"><a href="#date_floor-913"><span class="linenos">913</span></a> <span class="k">if</span> <span class="n">unit</span> <span class="o">==</span> <span class="s2">"quarter"</span><span class="p">:</span>
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</span><span id="date_floor-914"><a href="#date_floor-914"><span class="linenos">914</span></a> <span class="k">if</span> <span class="n">d</span><span class="o">.</span><span class="n">month</span> <span class="o"><=</span> <span class="mi">3</span><span class="p">:</span>
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|
</span><span id="date_floor-915"><a href="#date_floor-915"><span class="linenos">915</span></a> <span class="k">return</span> <span class="n">d</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">month</span><span class="o">=</span><span class="mi">1</span><span class="p">,</span> <span class="n">day</span><span class="o">=</span><span class="mi">1</span><span class="p">)</span>
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</span><span id="date_floor-916"><a href="#date_floor-916"><span class="linenos">916</span></a> <span class="k">elif</span> <span class="n">d</span><span class="o">.</span><span class="n">month</span> <span class="o"><=</span> <span class="mi">6</span><span class="p">:</span>
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</span><span id="date_floor-917"><a href="#date_floor-917"><span class="linenos">917</span></a> <span class="k">return</span> <span class="n">d</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">month</span><span class="o">=</span><span class="mi">4</span><span class="p">,</span> <span class="n">day</span><span class="o">=</span><span class="mi">1</span><span class="p">)</span>
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</span><span id="date_floor-918"><a href="#date_floor-918"><span class="linenos">918</span></a> <span class="k">elif</span> <span class="n">d</span><span class="o">.</span><span class="n">month</span> <span class="o"><=</span> <span class="mi">9</span><span class="p">:</span>
|
|
</span><span id="date_floor-919"><a href="#date_floor-919"><span class="linenos">919</span></a> <span class="k">return</span> <span class="n">d</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">month</span><span class="o">=</span><span class="mi">7</span><span class="p">,</span> <span class="n">day</span><span class="o">=</span><span class="mi">1</span><span class="p">)</span>
|
|
</span><span id="date_floor-920"><a href="#date_floor-920"><span class="linenos">920</span></a> <span class="k">else</span><span class="p">:</span>
|
|
</span><span id="date_floor-921"><a href="#date_floor-921"><span class="linenos">921</span></a> <span class="k">return</span> <span class="n">d</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">month</span><span class="o">=</span><span class="mi">10</span><span class="p">,</span> <span class="n">day</span><span class="o">=</span><span class="mi">1</span><span class="p">)</span>
|
|
</span><span id="date_floor-922"><a href="#date_floor-922"><span class="linenos">922</span></a> <span class="k">if</span> <span class="n">unit</span> <span class="o">==</span> <span class="s2">"month"</span><span class="p">:</span>
|
|
</span><span id="date_floor-923"><a href="#date_floor-923"><span class="linenos">923</span></a> <span class="k">return</span> <span class="n">d</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">month</span><span class="o">=</span><span class="n">d</span><span class="o">.</span><span class="n">month</span><span class="p">,</span> <span class="n">day</span><span class="o">=</span><span class="mi">1</span><span class="p">)</span>
|
|
</span><span id="date_floor-924"><a href="#date_floor-924"><span class="linenos">924</span></a> <span class="k">if</span> <span class="n">unit</span> <span class="o">==</span> <span class="s2">"week"</span><span class="p">:</span>
|
|
</span><span id="date_floor-925"><a href="#date_floor-925"><span class="linenos">925</span></a> <span class="c1"># Assuming week starts on Monday (0) and ends on Sunday (6)</span>
|
|
</span><span id="date_floor-926"><a href="#date_floor-926"><span class="linenos">926</span></a> <span class="k">return</span> <span class="n">d</span> <span class="o">-</span> <span class="n">datetime</span><span class="o">.</span><span class="n">timedelta</span><span class="p">(</span><span class="n">days</span><span class="o">=</span><span class="n">d</span><span class="o">.</span><span class="n">weekday</span><span class="p">())</span>
|
|
</span><span id="date_floor-927"><a href="#date_floor-927"><span class="linenos">927</span></a> <span class="k">if</span> <span class="n">unit</span> <span class="o">==</span> <span class="s2">"day"</span><span class="p">:</span>
|
|
</span><span id="date_floor-928"><a href="#date_floor-928"><span class="linenos">928</span></a> <span class="k">return</span> <span class="n">d</span>
|
|
</span><span id="date_floor-929"><a href="#date_floor-929"><span class="linenos">929</span></a>
|
|
</span><span id="date_floor-930"><a href="#date_floor-930"><span class="linenos">930</span></a> <span class="k">raise</span> <span class="n">UnsupportedUnit</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Unsupported unit: </span><span class="si">{</span><span class="n">unit</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span>
|
|
</span></pre></div>
|
|
|
|
|
|
|
|
|
|
</section>
|
|
<section id="date_ceil">
|
|
<input id="date_ceil-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1">
|
|
<div class="attr function">
|
|
|
|
<span class="def">def</span>
|
|
<span class="name">date_ceil</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">d</span><span class="p">:</span> <span class="n">datetime</span><span class="o">.</span><span class="n">date</span>, </span><span class="param"><span class="n">unit</span><span class="p">:</span> <span class="nb">str</span></span><span class="return-annotation">) -> <span class="n">datetime</span><span class="o">.</span><span class="n">date</span>:</span></span>
|
|
|
|
<label class="view-source-button" for="date_ceil-view-source"><span>View Source</span></label>
|
|
|
|
</div>
|
|
<a class="headerlink" href="#date_ceil"></a>
|
|
<div class="pdoc-code codehilite"><pre><span></span><span id="date_ceil-933"><a href="#date_ceil-933"><span class="linenos">933</span></a><span class="k">def</span> <span class="nf">date_ceil</span><span class="p">(</span><span class="n">d</span><span class="p">:</span> <span class="n">datetime</span><span class="o">.</span><span class="n">date</span><span class="p">,</span> <span class="n">unit</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-></span> <span class="n">datetime</span><span class="o">.</span><span class="n">date</span><span class="p">:</span>
|
|
</span><span id="date_ceil-934"><a href="#date_ceil-934"><span class="linenos">934</span></a> <span class="n">floor</span> <span class="o">=</span> <span class="n">date_floor</span><span class="p">(</span><span class="n">d</span><span class="p">,</span> <span class="n">unit</span><span class="p">)</span>
|
|
</span><span id="date_ceil-935"><a href="#date_ceil-935"><span class="linenos">935</span></a>
|
|
</span><span id="date_ceil-936"><a href="#date_ceil-936"><span class="linenos">936</span></a> <span class="k">if</span> <span class="n">floor</span> <span class="o">==</span> <span class="n">d</span><span class="p">:</span>
|
|
</span><span id="date_ceil-937"><a href="#date_ceil-937"><span class="linenos">937</span></a> <span class="k">return</span> <span class="n">d</span>
|
|
</span><span id="date_ceil-938"><a href="#date_ceil-938"><span class="linenos">938</span></a>
|
|
</span><span id="date_ceil-939"><a href="#date_ceil-939"><span class="linenos">939</span></a> <span class="k">return</span> <span class="n">floor</span> <span class="o">+</span> <span class="n">interval</span><span class="p">(</span><span class="n">unit</span><span class="p">)</span>
|
|
</span></pre></div>
|
|
|
|
|
|
|
|
|
|
</section>
|
|
<section id="boolean_literal">
|
|
<input id="boolean_literal-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1">
|
|
<div class="attr function">
|
|
|
|
<span class="def">def</span>
|
|
<span class="name">boolean_literal</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">condition</span></span><span class="return-annotation">):</span></span>
|
|
|
|
<label class="view-source-button" for="boolean_literal-view-source"><span>View Source</span></label>
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|
|
</div>
|
|
<a class="headerlink" href="#boolean_literal"></a>
|
|
<div class="pdoc-code codehilite"><pre><span></span><span id="boolean_literal-942"><a href="#boolean_literal-942"><span class="linenos">942</span></a><span class="k">def</span> <span class="nf">boolean_literal</span><span class="p">(</span><span class="n">condition</span><span class="p">):</span>
|
|
</span><span id="boolean_literal-943"><a href="#boolean_literal-943"><span class="linenos">943</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> <span class="k">if</span> <span class="n">condition</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span>
|
|
</span></pre></div>
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