Adding upstream version 25.16.1.
Signed-off-by: Daniel Baumann <daniel@debian.org>
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110 changed files with 75353 additions and 68092 deletions
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</span><span id="L-18"><a href="#L-18"><span class="linenos"> 18</span></a> <span class="n">db</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="nb">str</span> <span class="o">|</span> <span class="n">exp</span><span class="o">.</span><span class="n">Identifier</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span>
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</span><span id="L-19"><a href="#L-19"><span class="linenos"> 19</span></a> <span class="n">catalog</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="nb">str</span> <span class="o">|</span> <span class="n">exp</span><span class="o">.</span><span class="n">Identifier</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span>
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</span><span id="L-20"><a href="#L-20"><span class="linenos"> 20</span></a> <span class="n">schema</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">Schema</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</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="n">dialect</span><span class="p">:</span> <span class="n">DialectType</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span>
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</span><span id="L-22"><a href="#L-22"><span class="linenos"> 22</span></a><span class="p">)</span> <span class="o">-></span> <span class="n">E</span><span class="p">:</span>
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</span><span id="L-23"><a href="#L-23"><span class="linenos"> 23</span></a><span class="w"> </span><span class="sd">"""</span>
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</span><span id="L-24"><a href="#L-24"><span class="linenos"> 24</span></a><span class="sd"> Rewrite sqlglot AST to have fully qualified tables. Join constructs such as</span>
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</span><span id="L-25"><a href="#L-25"><span class="linenos"> 25</span></a><span class="sd"> (t1 JOIN t2) AS t will be expanded into (SELECT * FROM t1 AS t1, t2 AS t2) AS t.</span>
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</span><span id="L-26"><a href="#L-26"><span class="linenos"> 26</span></a>
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</span><span id="L-27"><a href="#L-27"><span class="linenos"> 27</span></a><span class="sd"> Examples:</span>
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</span><span id="L-28"><a href="#L-28"><span class="linenos"> 28</span></a><span class="sd"> >>> import sqlglot</span>
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</span><span id="L-29"><a href="#L-29"><span class="linenos"> 29</span></a><span class="sd"> >>> expression = sqlglot.parse_one("SELECT 1 FROM tbl")</span>
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</span><span id="L-30"><a href="#L-30"><span class="linenos"> 30</span></a><span class="sd"> >>> qualify_tables(expression, db="db").sql()</span>
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</span><span id="L-31"><a href="#L-31"><span class="linenos"> 31</span></a><span class="sd"> 'SELECT 1 FROM db.tbl AS tbl'</span>
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</span><span id="L-32"><a href="#L-32"><span class="linenos"> 32</span></a><span class="sd"> >>></span>
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</span><span id="L-33"><a href="#L-33"><span class="linenos"> 33</span></a><span class="sd"> >>> expression = sqlglot.parse_one("SELECT 1 FROM (t1 JOIN t2) AS t")</span>
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</span><span id="L-34"><a href="#L-34"><span class="linenos"> 34</span></a><span class="sd"> >>> qualify_tables(expression).sql()</span>
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</span><span id="L-35"><a href="#L-35"><span class="linenos"> 35</span></a><span class="sd"> 'SELECT 1 FROM (SELECT * FROM t1 AS t1, t2 AS t2) AS t'</span>
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</span><span id="L-36"><a href="#L-36"><span class="linenos"> 36</span></a>
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</span><span id="L-37"><a href="#L-37"><span class="linenos"> 37</span></a><span class="sd"> Args:</span>
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</span><span id="L-38"><a href="#L-38"><span class="linenos"> 38</span></a><span class="sd"> expression: Expression to qualify</span>
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</span><span id="L-39"><a href="#L-39"><span class="linenos"> 39</span></a><span class="sd"> db: Database name</span>
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</span><span id="L-40"><a href="#L-40"><span class="linenos"> 40</span></a><span class="sd"> catalog: Catalog name</span>
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</span><span id="L-41"><a href="#L-41"><span class="linenos"> 41</span></a><span class="sd"> schema: A schema to populate</span>
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</span><span id="L-42"><a href="#L-42"><span class="linenos"> 42</span></a><span class="sd"> dialect: The dialect to parse catalog and schema into.</span>
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</span><span id="L-43"><a href="#L-43"><span class="linenos"> 43</span></a>
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</span><span id="L-44"><a href="#L-44"><span class="linenos"> 44</span></a><span class="sd"> Returns:</span>
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</span><span id="L-45"><a href="#L-45"><span class="linenos"> 45</span></a><span class="sd"> The qualified expression.</span>
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</span><span id="L-46"><a href="#L-46"><span class="linenos"> 46</span></a><span class="sd"> """</span>
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</span><span id="L-47"><a href="#L-47"><span class="linenos"> 47</span></a> <span class="n">next_alias_name</span> <span class="o">=</span> <span class="n">name_sequence</span><span class="p">(</span><span class="s2">"_q_"</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="n">db</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">parse_identifier</span><span class="p">(</span><span class="n">db</span><span class="p">,</span> <span class="n">dialect</span><span class="o">=</span><span class="n">dialect</span><span class="p">)</span> <span class="k">if</span> <span class="n">db</span> <span class="k">else</span> <span class="kc">None</span>
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</span><span id="L-49"><a href="#L-49"><span class="linenos"> 49</span></a> <span class="n">catalog</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">parse_identifier</span><span class="p">(</span><span class="n">catalog</span><span class="p">,</span> <span class="n">dialect</span><span class="o">=</span><span class="n">dialect</span><span class="p">)</span> <span class="k">if</span> <span class="n">catalog</span> <span class="k">else</span> <span class="kc">None</span>
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</span><span id="L-50"><a href="#L-50"><span class="linenos"> 50</span></a>
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</span><span id="L-51"><a href="#L-51"><span class="linenos"> 51</span></a> <span class="k">def</span> <span class="nf">_qualify</span><span class="p">(</span><span class="n">table</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">)</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span>
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</span><span id="L-52"><a href="#L-52"><span class="linenos"> 52</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">table</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">Identifier</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="ow">not</span> <span class="n">table</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">"db"</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="n">table</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"db"</span><span class="p">,</span> <span class="n">db</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="ow">not</span> <span class="n">table</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">"catalog"</span><span class="p">)</span> <span class="ow">and</span> <span class="n">table</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">"db"</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">table</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"catalog"</span><span class="p">,</span> <span class="n">catalog</span><span class="p">)</span>
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</span><span id="L-57"><a href="#L-57"><span class="linenos"> 57</span></a>
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</span><span id="L-58"><a href="#L-58"><span class="linenos"> 58</span></a> <span class="k">if</span> <span class="p">(</span><span class="n">db</span> <span class="ow">or</span> <span class="n">catalog</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">Query</span><span class="p">):</span>
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</span><span id="L-59"><a href="#L-59"><span class="linenos"> 59</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">walk</span><span class="p">(</span><span class="n">prune</span><span class="o">=</span><span class="k">lambda</span> <span class="n">n</span><span class="p">:</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">n</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Query</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="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</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="n">_qualify</span><span class="p">(</span><span class="n">node</span><span class="p">)</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="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span>
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</span><span id="L-64"><a href="#L-64"><span class="linenos"> 64</span></a> <span class="k">for</span> <span class="n">derived_table</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">chain</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">ctes</span><span class="p">,</span> <span class="n">scope</span><span class="o">.</span><span class="n">derived_tables</span><span class="p">):</span>
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</span><span id="L-65"><a href="#L-65"><span class="linenos"> 65</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">derived_table</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subquery</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">unnested</span> <span class="o">=</span> <span class="n">derived_table</span><span class="o">.</span><span class="n">unnest</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="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">unnested</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</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">joins</span> <span class="o">=</span> <span class="n">unnested</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="s2">"joins"</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span>
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</span><span id="L-69"><a href="#L-69"><span class="linenos"> 69</span></a> <span class="n">derived_table</span><span class="o">.</span><span class="n">this</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">select</span><span class="p">(</span><span class="s2">"*"</span><span class="p">)</span><span class="o">.</span><span class="n">from_</span><span class="p">(</span><span class="n">unnested</span><span class="o">.</span><span class="n">copy</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-70"><a href="#L-70"><span class="linenos"> 70</span></a> <span class="n">derived_table</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"joins"</span><span class="p">,</span> <span class="n">joins</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="k">if</span> <span class="ow">not</span> <span class="n">derived_table</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">"alias"</span><span class="p">):</span>
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</span><span id="L-73"><a href="#L-73"><span class="linenos"> 73</span></a> <span class="n">alias_</span> <span class="o">=</span> <span class="n">next_alias_name</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">derived_table</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">TableAlias</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">alias_</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">scope</span><span class="o">.</span><span class="n">rename_source</span><span class="p">(</span><span class="kc">None</span><span class="p">,</span> <span class="n">alias_</span><span class="p">)</span>
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</span><span id="L-76"><a href="#L-76"><span class="linenos"> 76</span></a>
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</span><span id="L-77"><a href="#L-77"><span class="linenos"> 77</span></a> <span class="n">pivots</span> <span class="o">=</span> <span class="n">derived_table</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">"pivots"</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="k">if</span> <span class="n">pivots</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">pivots</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">alias</span><span class="p">:</span>
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</span><span id="L-79"><a href="#L-79"><span class="linenos"> 79</span></a> <span class="n">pivots</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">TableAlias</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">next_alias_name</span><span class="p">())))</span>
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</span><span id="L-80"><a href="#L-80"><span class="linenos"> 80</span></a>
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</span><span id="L-81"><a href="#L-81"><span class="linenos"> 81</span></a> <span class="n">table_aliases</span> <span class="o">=</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="n">infer_csv_schemas</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">False</span><span class="p">,</span>
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</span><span id="L-22"><a href="#L-22"><span class="linenos"> 22</span></a> <span class="n">dialect</span><span class="p">:</span> <span class="n">DialectType</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span>
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</span><span id="L-23"><a href="#L-23"><span class="linenos"> 23</span></a><span class="p">)</span> <span class="o">-></span> <span class="n">E</span><span class="p">:</span>
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</span><span id="L-24"><a href="#L-24"><span class="linenos"> 24</span></a><span class="w"> </span><span class="sd">"""</span>
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</span><span id="L-25"><a href="#L-25"><span class="linenos"> 25</span></a><span class="sd"> Rewrite sqlglot AST to have fully qualified tables. Join constructs such as</span>
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</span><span id="L-26"><a href="#L-26"><span class="linenos"> 26</span></a><span class="sd"> (t1 JOIN t2) AS t will be expanded into (SELECT * FROM t1 AS t1, t2 AS t2) AS t.</span>
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</span><span id="L-27"><a href="#L-27"><span class="linenos"> 27</span></a>
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</span><span id="L-28"><a href="#L-28"><span class="linenos"> 28</span></a><span class="sd"> Examples:</span>
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</span><span id="L-29"><a href="#L-29"><span class="linenos"> 29</span></a><span class="sd"> >>> import sqlglot</span>
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</span><span id="L-30"><a href="#L-30"><span class="linenos"> 30</span></a><span class="sd"> >>> expression = sqlglot.parse_one("SELECT 1 FROM tbl")</span>
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</span><span id="L-31"><a href="#L-31"><span class="linenos"> 31</span></a><span class="sd"> >>> qualify_tables(expression, db="db").sql()</span>
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</span><span id="L-32"><a href="#L-32"><span class="linenos"> 32</span></a><span class="sd"> 'SELECT 1 FROM db.tbl AS tbl'</span>
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</span><span id="L-33"><a href="#L-33"><span class="linenos"> 33</span></a><span class="sd"> >>></span>
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</span><span id="L-34"><a href="#L-34"><span class="linenos"> 34</span></a><span class="sd"> >>> expression = sqlglot.parse_one("SELECT 1 FROM (t1 JOIN t2) AS t")</span>
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</span><span id="L-35"><a href="#L-35"><span class="linenos"> 35</span></a><span class="sd"> >>> qualify_tables(expression).sql()</span>
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</span><span id="L-36"><a href="#L-36"><span class="linenos"> 36</span></a><span class="sd"> 'SELECT 1 FROM (SELECT * FROM t1 AS t1, t2 AS t2) AS t'</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="sd"> Args:</span>
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</span><span id="L-39"><a href="#L-39"><span class="linenos"> 39</span></a><span class="sd"> expression: Expression to qualify</span>
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</span><span id="L-40"><a href="#L-40"><span class="linenos"> 40</span></a><span class="sd"> db: Database name</span>
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</span><span id="L-41"><a href="#L-41"><span class="linenos"> 41</span></a><span class="sd"> catalog: Catalog name</span>
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</span><span id="L-42"><a href="#L-42"><span class="linenos"> 42</span></a><span class="sd"> schema: A schema to populate</span>
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</span><span id="L-43"><a href="#L-43"><span class="linenos"> 43</span></a><span class="sd"> infer_csv_schemas: Whether to scan READ_CSV calls in order to infer the CSVs' schemas.</span>
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</span><span id="L-44"><a href="#L-44"><span class="linenos"> 44</span></a><span class="sd"> dialect: The dialect to parse catalog and schema into.</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="sd"> Returns:</span>
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</span><span id="L-47"><a href="#L-47"><span class="linenos"> 47</span></a><span class="sd"> The qualified expression.</span>
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</span><span id="L-48"><a href="#L-48"><span class="linenos"> 48</span></a><span class="sd"> """</span>
|
||||
</span><span id="L-49"><a href="#L-49"><span class="linenos"> 49</span></a> <span class="n">next_alias_name</span> <span class="o">=</span> <span class="n">name_sequence</span><span class="p">(</span><span class="s2">"_q_"</span><span class="p">)</span>
|
||||
</span><span id="L-50"><a href="#L-50"><span class="linenos"> 50</span></a> <span class="n">db</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">parse_identifier</span><span class="p">(</span><span class="n">db</span><span class="p">,</span> <span class="n">dialect</span><span class="o">=</span><span class="n">dialect</span><span class="p">)</span> <span class="k">if</span> <span class="n">db</span> <span class="k">else</span> <span class="kc">None</span>
|
||||
</span><span id="L-51"><a href="#L-51"><span class="linenos"> 51</span></a> <span class="n">catalog</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">parse_identifier</span><span class="p">(</span><span class="n">catalog</span><span class="p">,</span> <span class="n">dialect</span><span class="o">=</span><span class="n">dialect</span><span class="p">)</span> <span class="k">if</span> <span class="n">catalog</span> <span class="k">else</span> <span class="kc">None</span>
|
||||
</span><span id="L-52"><a href="#L-52"><span class="linenos"> 52</span></a>
|
||||
</span><span id="L-53"><a href="#L-53"><span class="linenos"> 53</span></a> <span class="k">def</span> <span class="nf">_qualify</span><span class="p">(</span><span class="n">table</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">)</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span>
|
||||
</span><span id="L-54"><a href="#L-54"><span class="linenos"> 54</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">table</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">Identifier</span><span class="p">):</span>
|
||||
</span><span id="L-55"><a href="#L-55"><span class="linenos"> 55</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">table</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">"db"</span><span class="p">):</span>
|
||||
</span><span id="L-56"><a href="#L-56"><span class="linenos"> 56</span></a> <span class="n">table</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"db"</span><span class="p">,</span> <span class="n">db</span><span class="p">)</span>
|
||||
</span><span id="L-57"><a href="#L-57"><span class="linenos"> 57</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">table</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">"catalog"</span><span class="p">)</span> <span class="ow">and</span> <span class="n">table</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">"db"</span><span class="p">):</span>
|
||||
</span><span id="L-58"><a href="#L-58"><span class="linenos"> 58</span></a> <span class="n">table</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"catalog"</span><span class="p">,</span> <span class="n">catalog</span><span class="p">)</span>
|
||||
</span><span id="L-59"><a href="#L-59"><span class="linenos"> 59</span></a>
|
||||
</span><span id="L-60"><a href="#L-60"><span class="linenos"> 60</span></a> <span class="k">if</span> <span class="p">(</span><span class="n">db</span> <span class="ow">or</span> <span class="n">catalog</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">Query</span><span class="p">):</span>
|
||||
</span><span id="L-61"><a href="#L-61"><span class="linenos"> 61</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">walk</span><span class="p">(</span><span class="n">prune</span><span class="o">=</span><span class="k">lambda</span> <span class="n">n</span><span class="p">:</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">n</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Query</span><span class="p">)):</span>
|
||||
</span><span id="L-62"><a href="#L-62"><span class="linenos"> 62</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">):</span>
|
||||
</span><span id="L-63"><a href="#L-63"><span class="linenos"> 63</span></a> <span class="n">_qualify</span><span class="p">(</span><span class="n">node</span><span class="p">)</span>
|
||||
</span><span id="L-64"><a href="#L-64"><span class="linenos"> 64</span></a>
|
||||
</span><span id="L-65"><a href="#L-65"><span class="linenos"> 65</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span>
|
||||
</span><span id="L-66"><a href="#L-66"><span class="linenos"> 66</span></a> <span class="k">for</span> <span class="n">derived_table</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">chain</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">ctes</span><span class="p">,</span> <span class="n">scope</span><span class="o">.</span><span class="n">derived_tables</span><span class="p">):</span>
|
||||
</span><span id="L-67"><a href="#L-67"><span class="linenos"> 67</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">derived_table</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subquery</span><span class="p">):</span>
|
||||
</span><span id="L-68"><a href="#L-68"><span class="linenos"> 68</span></a> <span class="n">unnested</span> <span class="o">=</span> <span class="n">derived_table</span><span class="o">.</span><span class="n">unnest</span><span class="p">()</span>
|
||||
</span><span id="L-69"><a href="#L-69"><span class="linenos"> 69</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">unnested</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">):</span>
|
||||
</span><span id="L-70"><a href="#L-70"><span class="linenos"> 70</span></a> <span class="n">joins</span> <span class="o">=</span> <span class="n">unnested</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="s2">"joins"</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span>
|
||||
</span><span id="L-71"><a href="#L-71"><span class="linenos"> 71</span></a> <span class="n">derived_table</span><span class="o">.</span><span class="n">this</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">select</span><span class="p">(</span><span class="s2">"*"</span><span class="p">)</span><span class="o">.</span><span class="n">from_</span><span class="p">(</span><span class="n">unnested</span><span class="o">.</span><span class="n">copy</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-72"><a href="#L-72"><span class="linenos"> 72</span></a> <span class="n">derived_table</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"joins"</span><span class="p">,</span> <span class="n">joins</span><span class="p">)</span>
|
||||
</span><span id="L-73"><a href="#L-73"><span class="linenos"> 73</span></a>
|
||||
</span><span id="L-74"><a href="#L-74"><span class="linenos"> 74</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">derived_table</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">"alias"</span><span class="p">):</span>
|
||||
</span><span id="L-75"><a href="#L-75"><span class="linenos"> 75</span></a> <span class="n">alias_</span> <span class="o">=</span> <span class="n">next_alias_name</span><span class="p">()</span>
|
||||
</span><span id="L-76"><a href="#L-76"><span class="linenos"> 76</span></a> <span class="n">derived_table</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">TableAlias</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">alias_</span><span class="p">)))</span>
|
||||
</span><span id="L-77"><a href="#L-77"><span class="linenos"> 77</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">rename_source</span><span class="p">(</span><span class="kc">None</span><span class="p">,</span> <span class="n">alias_</span><span class="p">)</span>
|
||||
</span><span id="L-78"><a href="#L-78"><span class="linenos"> 78</span></a>
|
||||
</span><span id="L-79"><a href="#L-79"><span class="linenos"> 79</span></a> <span class="n">pivots</span> <span class="o">=</span> <span class="n">derived_table</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">"pivots"</span><span class="p">)</span>
|
||||
</span><span id="L-80"><a href="#L-80"><span class="linenos"> 80</span></a> <span class="k">if</span> <span class="n">pivots</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">pivots</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">alias</span><span class="p">:</span>
|
||||
</span><span id="L-81"><a href="#L-81"><span class="linenos"> 81</span></a> <span class="n">pivots</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">TableAlias</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">next_alias_name</span><span class="p">())))</span>
|
||||
</span><span id="L-82"><a href="#L-82"><span class="linenos"> 82</span></a>
|
||||
</span><span id="L-83"><a href="#L-83"><span class="linenos"> 83</span></a> <span class="k">for</span> <span class="n">name</span><span class="p">,</span> <span class="n">source</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="o">.</span><span class="n">items</span><span class="p">():</span>
|
||||
</span><span id="L-84"><a href="#L-84"><span class="linenos"> 84</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">):</span>
|
||||
</span><span id="L-85"><a href="#L-85"><span class="linenos"> 85</span></a> <span class="n">pivots</span> <span class="o">=</span> <span class="n">pivots</span> <span class="o">=</span> <span class="n">source</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">"pivots"</span><span class="p">)</span>
|
||||
</span><span id="L-86"><a href="#L-86"><span class="linenos"> 86</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">source</span><span class="o">.</span><span class="n">alias</span><span class="p">:</span>
|
||||
</span><span id="L-87"><a href="#L-87"><span class="linenos"> 87</span></a> <span class="c1"># Don't add the pivot's alias to the pivoted table, use the table's name instead</span>
|
||||
</span><span id="L-88"><a href="#L-88"><span class="linenos"> 88</span></a> <span class="k">if</span> <span class="n">pivots</span> <span class="ow">and</span> <span class="n">pivots</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">alias</span> <span class="o">==</span> <span class="n">name</span><span class="p">:</span>
|
||||
</span><span id="L-89"><a href="#L-89"><span class="linenos"> 89</span></a> <span class="n">name</span> <span class="o">=</span> <span class="n">source</span><span class="o">.</span><span class="n">name</span>
|
||||
</span><span id="L-90"><a href="#L-90"><span class="linenos"> 90</span></a>
|
||||
</span><span id="L-91"><a href="#L-91"><span class="linenos"> 91</span></a> <span class="c1"># Mutates the source by attaching an alias to it</span>
|
||||
</span><span id="L-92"><a href="#L-92"><span class="linenos"> 92</span></a> <span class="n">alias</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">name</span> <span class="ow">or</span> <span class="n">source</span><span class="o">.</span><span class="n">name</span> <span class="ow">or</span> <span class="n">next_alias_name</span><span class="p">(),</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> <span class="n">table</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span>
|
||||
</span><span id="L-93"><a href="#L-93"><span class="linenos"> 93</span></a>
|
||||
</span><span id="L-94"><a href="#L-94"><span class="linenos"> 94</span></a> <span class="n">table_aliases</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">p</span><span class="o">.</span><span class="n">name</span> <span class="k">for</span> <span class="n">p</span> <span class="ow">in</span> <span class="n">source</span><span class="o">.</span><span class="n">parts</span><span class="p">)]</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span>
|
||||
</span><span id="L-95"><a href="#L-95"><span class="linenos"> 95</span></a> <span class="n">source</span><span class="o">.</span><span class="n">alias</span>
|
||||
</span><span id="L-96"><a href="#L-96"><span class="linenos"> 96</span></a> <span class="p">)</span>
|
||||
</span><span id="L-97"><a href="#L-97"><span class="linenos"> 97</span></a>
|
||||
</span><span id="L-98"><a href="#L-98"><span class="linenos"> 98</span></a> <span class="n">_qualify</span><span class="p">(</span><span class="n">source</span><span class="p">)</span>
|
||||
</span><span id="L-83"><a href="#L-83"><span class="linenos"> 83</span></a> <span class="n">table_aliases</span> <span class="o">=</span> <span class="p">{}</span>
|
||||
</span><span id="L-84"><a href="#L-84"><span class="linenos"> 84</span></a>
|
||||
</span><span id="L-85"><a href="#L-85"><span class="linenos"> 85</span></a> <span class="k">for</span> <span class="n">name</span><span class="p">,</span> <span class="n">source</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="o">.</span><span class="n">items</span><span class="p">():</span>
|
||||
</span><span id="L-86"><a href="#L-86"><span class="linenos"> 86</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">):</span>
|
||||
</span><span id="L-87"><a href="#L-87"><span class="linenos"> 87</span></a> <span class="n">pivots</span> <span class="o">=</span> <span class="n">pivots</span> <span class="o">=</span> <span class="n">source</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">"pivots"</span><span class="p">)</span>
|
||||
</span><span id="L-88"><a href="#L-88"><span class="linenos"> 88</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">source</span><span class="o">.</span><span class="n">alias</span><span class="p">:</span>
|
||||
</span><span id="L-89"><a href="#L-89"><span class="linenos"> 89</span></a> <span class="c1"># Don't add the pivot's alias to the pivoted table, use the table's name instead</span>
|
||||
</span><span id="L-90"><a href="#L-90"><span class="linenos"> 90</span></a> <span class="k">if</span> <span class="n">pivots</span> <span class="ow">and</span> <span class="n">pivots</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">alias</span> <span class="o">==</span> <span class="n">name</span><span class="p">:</span>
|
||||
</span><span id="L-91"><a href="#L-91"><span class="linenos"> 91</span></a> <span class="n">name</span> <span class="o">=</span> <span class="n">source</span><span class="o">.</span><span class="n">name</span>
|
||||
</span><span id="L-92"><a href="#L-92"><span class="linenos"> 92</span></a>
|
||||
</span><span id="L-93"><a href="#L-93"><span class="linenos"> 93</span></a> <span class="c1"># Mutates the source by attaching an alias to it</span>
|
||||
</span><span id="L-94"><a href="#L-94"><span class="linenos"> 94</span></a> <span class="n">alias</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">name</span> <span class="ow">or</span> <span class="n">source</span><span class="o">.</span><span class="n">name</span> <span class="ow">or</span> <span class="n">next_alias_name</span><span class="p">(),</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> <span class="n">table</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span>
|
||||
</span><span id="L-95"><a href="#L-95"><span class="linenos"> 95</span></a>
|
||||
</span><span id="L-96"><a href="#L-96"><span class="linenos"> 96</span></a> <span class="n">table_aliases</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">p</span><span class="o">.</span><span class="n">name</span> <span class="k">for</span> <span class="n">p</span> <span class="ow">in</span> <span class="n">source</span><span class="o">.</span><span class="n">parts</span><span class="p">)]</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span>
|
||||
</span><span id="L-97"><a href="#L-97"><span class="linenos"> 97</span></a> <span class="n">source</span><span class="o">.</span><span class="n">alias</span>
|
||||
</span><span id="L-98"><a href="#L-98"><span class="linenos"> 98</span></a> <span class="p">)</span>
|
||||
</span><span id="L-99"><a href="#L-99"><span class="linenos"> 99</span></a>
|
||||
</span><span id="L-100"><a href="#L-100"><span class="linenos">100</span></a> <span class="k">if</span> <span class="n">pivots</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">pivots</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">alias</span><span class="p">:</span>
|
||||
</span><span id="L-101"><a href="#L-101"><span class="linenos">101</span></a> <span class="n">pivots</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">set</span><span class="p">(</span>
|
||||
</span><span id="L-102"><a href="#L-102"><span class="linenos">102</span></a> <span class="s2">"alias"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">TableAlias</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">next_alias_name</span><span class="p">()))</span>
|
||||
</span><span id="L-103"><a href="#L-103"><span class="linenos">103</span></a> <span class="p">)</span>
|
||||
</span><span id="L-104"><a href="#L-104"><span class="linenos">104</span></a>
|
||||
</span><span id="L-105"><a href="#L-105"><span class="linenos">105</span></a> <span class="k">if</span> <span class="n">schema</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</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">ReadCSV</span><span class="p">):</span>
|
||||
</span><span id="L-106"><a href="#L-106"><span class="linenos">106</span></a> <span class="k">with</span> <span class="n">csv_reader</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">this</span><span class="p">)</span> <span class="k">as</span> <span class="n">reader</span><span class="p">:</span>
|
||||
</span><span id="L-107"><a href="#L-107"><span class="linenos">107</span></a> <span class="n">header</span> <span class="o">=</span> <span class="nb">next</span><span class="p">(</span><span class="n">reader</span><span class="p">)</span>
|
||||
</span><span id="L-108"><a href="#L-108"><span class="linenos">108</span></a> <span class="n">columns</span> <span class="o">=</span> <span class="nb">next</span><span class="p">(</span><span class="n">reader</span><span class="p">)</span>
|
||||
</span><span id="L-109"><a href="#L-109"><span class="linenos">109</span></a> <span class="n">schema</span><span class="o">.</span><span class="n">add_table</span><span class="p">(</span>
|
||||
</span><span id="L-110"><a href="#L-110"><span class="linenos">110</span></a> <span class="n">source</span><span class="p">,</span>
|
||||
</span><span id="L-111"><a href="#L-111"><span class="linenos">111</span></a> <span class="p">{</span><span class="n">k</span><span class="p">:</span> <span class="nb">type</span><span class="p">(</span><span class="n">v</span><span class="p">)</span><span class="o">.</span><span class="vm">__name__</span> <span class="k">for</span> <span class="n">k</span><span class="p">,</span> <span class="n">v</span> <span class="ow">in</span> <span class="nb">zip</span><span class="p">(</span><span class="n">header</span><span class="p">,</span> <span class="n">columns</span><span class="p">)},</span>
|
||||
</span><span id="L-112"><a href="#L-112"><span class="linenos">112</span></a> <span class="n">match_depth</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span>
|
||||
</span><span id="L-113"><a href="#L-113"><span class="linenos">113</span></a> <span class="p">)</span>
|
||||
</span><span id="L-114"><a href="#L-114"><span class="linenos">114</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">Scope</span><span class="p">)</span> <span class="ow">and</span> <span class="n">source</span><span class="o">.</span><span class="n">is_udtf</span><span class="p">:</span>
|
||||
</span><span id="L-115"><a href="#L-115"><span class="linenos">115</span></a> <span class="n">udtf</span> <span class="o">=</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span>
|
||||
</span><span id="L-116"><a href="#L-116"><span class="linenos">116</span></a> <span class="n">table_alias</span> <span class="o">=</span> <span class="n">udtf</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">"alias"</span><span class="p">)</span> <span class="ow">or</span> <span class="n">exp</span><span class="o">.</span><span class="n">TableAlias</span><span class="p">(</span>
|
||||
</span><span id="L-117"><a href="#L-117"><span class="linenos">117</span></a> <span class="n">this</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">next_alias_name</span><span class="p">())</span>
|
||||
</span><span id="L-118"><a href="#L-118"><span class="linenos">118</span></a> <span class="p">)</span>
|
||||
</span><span id="L-119"><a href="#L-119"><span class="linenos">119</span></a> <span class="n">udtf</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">,</span> <span class="n">table_alias</span><span class="p">)</span>
|
||||
</span><span id="L-120"><a href="#L-120"><span class="linenos">120</span></a>
|
||||
</span><span id="L-121"><a href="#L-121"><span class="linenos">121</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">table_alias</span><span class="o">.</span><span class="n">name</span><span class="p">:</span>
|
||||
</span><span id="L-122"><a href="#L-122"><span class="linenos">122</span></a> <span class="n">table_alias</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"this"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">next_alias_name</span><span class="p">()))</span>
|
||||
</span><span id="L-123"><a href="#L-123"><span class="linenos">123</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">udtf</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Values</span><span class="p">)</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">table_alias</span><span class="o">.</span><span class="n">columns</span><span class="p">:</span>
|
||||
</span><span id="L-124"><a href="#L-124"><span class="linenos">124</span></a> <span class="k">for</span> <span class="n">i</span><span class="p">,</span> <span class="n">e</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="n">udtf</span><span class="o">.</span><span class="n">expressions</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">expressions</span><span class="p">):</span>
|
||||
</span><span id="L-125"><a href="#L-125"><span class="linenos">125</span></a> <span class="n">table_alias</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s2">"columns"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="sa">f</span><span class="s2">"_col_</span><span class="si">{</span><span class="n">i</span><span class="si">}</span><span class="s2">"</span><span class="p">))</span>
|
||||
</span><span id="L-126"><a href="#L-126"><span class="linenos">126</span></a> <span class="k">else</span><span class="p">:</span>
|
||||
</span><span id="L-127"><a href="#L-127"><span class="linenos">127</span></a> <span class="k">for</span> <span class="n">node</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">walk</span><span class="p">():</span>
|
||||
</span><span id="L-128"><a href="#L-128"><span class="linenos">128</span></a> <span class="k">if</span> <span class="p">(</span>
|
||||
</span><span id="L-129"><a href="#L-129"><span class="linenos">129</span></a> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">)</span>
|
||||
</span><span id="L-130"><a href="#L-130"><span class="linenos">130</span></a> <span class="ow">and</span> <span class="ow">not</span> <span class="n">node</span><span class="o">.</span><span class="n">alias</span>
|
||||
</span><span id="L-131"><a href="#L-131"><span class="linenos">131</span></a> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="o">.</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">From</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-132"><a href="#L-132"><span class="linenos">132</span></a> <span class="p">):</span>
|
||||
</span><span id="L-133"><a href="#L-133"><span class="linenos">133</span></a> <span class="c1"># Mutates the table by attaching an alias to it</span>
|
||||
</span><span id="L-134"><a href="#L-134"><span class="linenos">134</span></a> <span class="n">alias</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">node</span><span class="o">.</span><span class="n">name</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> <span class="n">table</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span>
|
||||
</span><span id="L-135"><a href="#L-135"><span class="linenos">135</span></a>
|
||||
</span><span id="L-136"><a href="#L-136"><span class="linenos">136</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">columns</span><span class="p">:</span>
|
||||
</span><span id="L-137"><a href="#L-137"><span class="linenos">137</span></a> <span class="k">if</span> <span class="n">column</span><span class="o">.</span><span class="n">db</span><span class="p">:</span>
|
||||
</span><span id="L-138"><a href="#L-138"><span class="linenos">138</span></a> <span class="n">table_alias</span> <span class="o">=</span> <span class="n">table_aliases</span><span class="o">.</span><span class="n">get</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">p</span><span class="o">.</span><span class="n">name</span> <span class="k">for</span> <span class="n">p</span> <span class="ow">in</span> <span class="n">column</span><span class="o">.</span><span class="n">parts</span><span class="p">[</span><span class="mi">0</span><span class="p">:</span><span class="o">-</span><span class="mi">1</span><span class="p">]))</span>
|
||||
</span><span id="L-139"><a href="#L-139"><span class="linenos">139</span></a>
|
||||
</span><span id="L-140"><a href="#L-140"><span class="linenos">140</span></a> <span class="k">if</span> <span class="n">table_alias</span><span class="p">:</span>
|
||||
</span><span id="L-141"><a href="#L-141"><span class="linenos">141</span></a> <span class="k">for</span> <span class="n">p</span> <span class="ow">in</span> <span class="n">exp</span><span class="o">.</span><span class="n">COLUMN_PARTS</span><span class="p">[</span><span class="mi">1</span><span class="p">:]:</span>
|
||||
</span><span id="L-142"><a href="#L-142"><span class="linenos">142</span></a> <span class="n">column</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="n">p</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span>
|
||||
</span><span id="L-143"><a href="#L-143"><span class="linenos">143</span></a> <span class="n">column</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"table"</span><span class="p">,</span> <span class="n">table_alias</span><span class="p">)</span>
|
||||
</span><span id="L-144"><a href="#L-144"><span class="linenos">144</span></a>
|
||||
</span><span id="L-145"><a href="#L-145"><span class="linenos">145</span></a> <span class="k">return</span> <span class="n">expression</span>
|
||||
</span><span id="L-100"><a href="#L-100"><span class="linenos">100</span></a> <span class="n">_qualify</span><span class="p">(</span><span class="n">source</span><span class="p">)</span>
|
||||
</span><span id="L-101"><a href="#L-101"><span class="linenos">101</span></a>
|
||||
</span><span id="L-102"><a href="#L-102"><span class="linenos">102</span></a> <span class="k">if</span> <span class="n">pivots</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">pivots</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">alias</span><span class="p">:</span>
|
||||
</span><span id="L-103"><a href="#L-103"><span class="linenos">103</span></a> <span class="n">pivots</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">set</span><span class="p">(</span>
|
||||
</span><span id="L-104"><a href="#L-104"><span class="linenos">104</span></a> <span class="s2">"alias"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">TableAlias</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">next_alias_name</span><span class="p">()))</span>
|
||||
</span><span id="L-105"><a href="#L-105"><span class="linenos">105</span></a> <span class="p">)</span>
|
||||
</span><span id="L-106"><a href="#L-106"><span class="linenos">106</span></a>
|
||||
</span><span id="L-107"><a href="#L-107"><span class="linenos">107</span></a> <span class="k">if</span> <span class="n">infer_csv_schemas</span> <span class="ow">and</span> <span class="n">schema</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</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">ReadCSV</span><span class="p">):</span>
|
||||
</span><span id="L-108"><a href="#L-108"><span class="linenos">108</span></a> <span class="k">with</span> <span class="n">csv_reader</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">this</span><span class="p">)</span> <span class="k">as</span> <span class="n">reader</span><span class="p">:</span>
|
||||
</span><span id="L-109"><a href="#L-109"><span class="linenos">109</span></a> <span class="n">header</span> <span class="o">=</span> <span class="nb">next</span><span class="p">(</span><span class="n">reader</span><span class="p">)</span>
|
||||
</span><span id="L-110"><a href="#L-110"><span class="linenos">110</span></a> <span class="n">columns</span> <span class="o">=</span> <span class="nb">next</span><span class="p">(</span><span class="n">reader</span><span class="p">)</span>
|
||||
</span><span id="L-111"><a href="#L-111"><span class="linenos">111</span></a> <span class="n">schema</span><span class="o">.</span><span class="n">add_table</span><span class="p">(</span>
|
||||
</span><span id="L-112"><a href="#L-112"><span class="linenos">112</span></a> <span class="n">source</span><span class="p">,</span>
|
||||
</span><span id="L-113"><a href="#L-113"><span class="linenos">113</span></a> <span class="p">{</span><span class="n">k</span><span class="p">:</span> <span class="nb">type</span><span class="p">(</span><span class="n">v</span><span class="p">)</span><span class="o">.</span><span class="vm">__name__</span> <span class="k">for</span> <span class="n">k</span><span class="p">,</span> <span class="n">v</span> <span class="ow">in</span> <span class="nb">zip</span><span class="p">(</span><span class="n">header</span><span class="p">,</span> <span class="n">columns</span><span class="p">)},</span>
|
||||
</span><span id="L-114"><a href="#L-114"><span class="linenos">114</span></a> <span class="n">match_depth</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span>
|
||||
</span><span id="L-115"><a href="#L-115"><span class="linenos">115</span></a> <span class="p">)</span>
|
||||
</span><span id="L-116"><a href="#L-116"><span class="linenos">116</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">Scope</span><span class="p">)</span> <span class="ow">and</span> <span class="n">source</span><span class="o">.</span><span class="n">is_udtf</span><span class="p">:</span>
|
||||
</span><span id="L-117"><a href="#L-117"><span class="linenos">117</span></a> <span class="n">udtf</span> <span class="o">=</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span>
|
||||
</span><span id="L-118"><a href="#L-118"><span class="linenos">118</span></a> <span class="n">table_alias</span> <span class="o">=</span> <span class="n">udtf</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">"alias"</span><span class="p">)</span> <span class="ow">or</span> <span class="n">exp</span><span class="o">.</span><span class="n">TableAlias</span><span class="p">(</span>
|
||||
</span><span id="L-119"><a href="#L-119"><span class="linenos">119</span></a> <span class="n">this</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">next_alias_name</span><span class="p">())</span>
|
||||
</span><span id="L-120"><a href="#L-120"><span class="linenos">120</span></a> <span class="p">)</span>
|
||||
</span><span id="L-121"><a href="#L-121"><span class="linenos">121</span></a> <span class="n">udtf</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">,</span> <span class="n">table_alias</span><span class="p">)</span>
|
||||
</span><span id="L-122"><a href="#L-122"><span class="linenos">122</span></a>
|
||||
</span><span id="L-123"><a href="#L-123"><span class="linenos">123</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">table_alias</span><span class="o">.</span><span class="n">name</span><span class="p">:</span>
|
||||
</span><span id="L-124"><a href="#L-124"><span class="linenos">124</span></a> <span class="n">table_alias</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"this"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">next_alias_name</span><span class="p">()))</span>
|
||||
</span><span id="L-125"><a href="#L-125"><span class="linenos">125</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">udtf</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Values</span><span class="p">)</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">table_alias</span><span class="o">.</span><span class="n">columns</span><span class="p">:</span>
|
||||
</span><span id="L-126"><a href="#L-126"><span class="linenos">126</span></a> <span class="k">for</span> <span class="n">i</span><span class="p">,</span> <span class="n">e</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="n">udtf</span><span class="o">.</span><span class="n">expressions</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">expressions</span><span class="p">):</span>
|
||||
</span><span id="L-127"><a href="#L-127"><span class="linenos">127</span></a> <span class="n">table_alias</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s2">"columns"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="sa">f</span><span class="s2">"_col_</span><span class="si">{</span><span class="n">i</span><span class="si">}</span><span class="s2">"</span><span class="p">))</span>
|
||||
</span><span id="L-128"><a href="#L-128"><span class="linenos">128</span></a> <span class="k">else</span><span class="p">:</span>
|
||||
</span><span id="L-129"><a href="#L-129"><span class="linenos">129</span></a> <span class="k">for</span> <span class="n">node</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">walk</span><span class="p">():</span>
|
||||
</span><span id="L-130"><a href="#L-130"><span class="linenos">130</span></a> <span class="k">if</span> <span class="p">(</span>
|
||||
</span><span id="L-131"><a href="#L-131"><span class="linenos">131</span></a> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">)</span>
|
||||
</span><span id="L-132"><a href="#L-132"><span class="linenos">132</span></a> <span class="ow">and</span> <span class="ow">not</span> <span class="n">node</span><span class="o">.</span><span class="n">alias</span>
|
||||
</span><span id="L-133"><a href="#L-133"><span class="linenos">133</span></a> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="o">.</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">From</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-134"><a href="#L-134"><span class="linenos">134</span></a> <span class="p">):</span>
|
||||
</span><span id="L-135"><a href="#L-135"><span class="linenos">135</span></a> <span class="c1"># Mutates the table by attaching an alias to it</span>
|
||||
</span><span id="L-136"><a href="#L-136"><span class="linenos">136</span></a> <span class="n">alias</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">node</span><span class="o">.</span><span class="n">name</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> <span class="n">table</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span>
|
||||
</span><span id="L-137"><a href="#L-137"><span class="linenos">137</span></a>
|
||||
</span><span id="L-138"><a href="#L-138"><span class="linenos">138</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">columns</span><span class="p">:</span>
|
||||
</span><span id="L-139"><a href="#L-139"><span class="linenos">139</span></a> <span class="k">if</span> <span class="n">column</span><span class="o">.</span><span class="n">db</span><span class="p">:</span>
|
||||
</span><span id="L-140"><a href="#L-140"><span class="linenos">140</span></a> <span class="n">table_alias</span> <span class="o">=</span> <span class="n">table_aliases</span><span class="o">.</span><span class="n">get</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">p</span><span class="o">.</span><span class="n">name</span> <span class="k">for</span> <span class="n">p</span> <span class="ow">in</span> <span class="n">column</span><span class="o">.</span><span class="n">parts</span><span class="p">[</span><span class="mi">0</span><span class="p">:</span><span class="o">-</span><span class="mi">1</span><span class="p">]))</span>
|
||||
</span><span id="L-141"><a href="#L-141"><span class="linenos">141</span></a>
|
||||
</span><span id="L-142"><a href="#L-142"><span class="linenos">142</span></a> <span class="k">if</span> <span class="n">table_alias</span><span class="p">:</span>
|
||||
</span><span id="L-143"><a href="#L-143"><span class="linenos">143</span></a> <span class="k">for</span> <span class="n">p</span> <span class="ow">in</span> <span class="n">exp</span><span class="o">.</span><span class="n">COLUMN_PARTS</span><span class="p">[</span><span class="mi">1</span><span class="p">:]:</span>
|
||||
</span><span id="L-144"><a href="#L-144"><span class="linenos">144</span></a> <span class="n">column</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="n">p</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span>
|
||||
</span><span id="L-145"><a href="#L-145"><span class="linenos">145</span></a> <span class="n">column</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"table"</span><span class="p">,</span> <span class="n">table_alias</span><span class="p">)</span>
|
||||
</span><span id="L-146"><a href="#L-146"><span class="linenos">146</span></a>
|
||||
</span><span id="L-147"><a href="#L-147"><span class="linenos">147</span></a> <span class="k">return</span> <span class="n">expression</span>
|
||||
</span></pre></div>
|
||||
|
||||
|
||||
|
|
@ -210,7 +212,7 @@
|
|||
<div class="attr function">
|
||||
|
||||
<span class="def">def</span>
|
||||
<span class="name">qualify_tables</span><span class="signature pdoc-code multiline">(<span class="param"> <span class="n">expression</span><span class="p">:</span> <span class="o">~</span><span class="n">E</span>,</span><span class="param"> <span class="n">db</span><span class="p">:</span> <span class="n">Union</span><span class="p">[</span><span class="n"><a href="../expressions.html#Identifier">sqlglot.expressions.Identifier</a></span><span class="p">,</span> <span class="nb">str</span><span class="p">,</span> <span class="n">NoneType</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span>,</span><span class="param"> <span class="n">catalog</span><span class="p">:</span> <span class="n">Union</span><span class="p">[</span><span class="n"><a href="../expressions.html#Identifier">sqlglot.expressions.Identifier</a></span><span class="p">,</span> <span class="nb">str</span><span class="p">,</span> <span class="n">NoneType</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span>,</span><span class="param"> <span class="n">schema</span><span class="p">:</span> <span class="n">Optional</span><span class="p">[</span><span class="n"><a href="../schema.html#Schema">sqlglot.schema.Schema</a></span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span>,</span><span class="param"> <span class="n">dialect</span><span class="p">:</span> <span class="n">Union</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n"><a href="../dialects/dialect.html#Dialect">sqlglot.dialects.dialect.Dialect</a></span><span class="p">,</span> <span class="n">Type</span><span class="p">[</span><span class="n"><a href="../dialects/dialect.html#Dialect">sqlglot.dialects.dialect.Dialect</a></span><span class="p">],</span> <span class="n">NoneType</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span></span><span class="return-annotation">) -> <span class="o">~</span><span class="n">E</span>:</span></span>
|
||||
<span class="name">qualify_tables</span><span class="signature pdoc-code multiline">(<span class="param"> <span class="n">expression</span><span class="p">:</span> <span class="o">~</span><span class="n">E</span>,</span><span class="param"> <span class="n">db</span><span class="p">:</span> <span class="n">Union</span><span class="p">[</span><span class="n"><a href="../expressions.html#Identifier">sqlglot.expressions.Identifier</a></span><span class="p">,</span> <span class="nb">str</span><span class="p">,</span> <span class="n">NoneType</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span>,</span><span class="param"> <span class="n">catalog</span><span class="p">:</span> <span class="n">Union</span><span class="p">[</span><span class="n"><a href="../expressions.html#Identifier">sqlglot.expressions.Identifier</a></span><span class="p">,</span> <span class="nb">str</span><span class="p">,</span> <span class="n">NoneType</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span>,</span><span class="param"> <span class="n">schema</span><span class="p">:</span> <span class="n">Optional</span><span class="p">[</span><span class="n"><a href="../schema.html#Schema">sqlglot.schema.Schema</a></span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span>,</span><span class="param"> <span class="n">infer_csv_schemas</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">False</span>,</span><span class="param"> <span class="n">dialect</span><span class="p">:</span> <span class="n">Union</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n"><a href="../dialects/dialect.html#Dialect">sqlglot.dialects.dialect.Dialect</a></span><span class="p">,</span> <span class="n">Type</span><span class="p">[</span><span class="n"><a href="../dialects/dialect.html#Dialect">sqlglot.dialects.dialect.Dialect</a></span><span class="p">],</span> <span class="n">NoneType</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span></span><span class="return-annotation">) -> <span class="o">~</span><span class="n">E</span>:</span></span>
|
||||
|
||||
<label class="view-source-button" for="qualify_tables-view-source"><span>View Source</span></label>
|
||||
|
||||
|
|
@ -221,131 +223,133 @@
|
|||
</span><span id="qualify_tables-19"><a href="#qualify_tables-19"><span class="linenos"> 19</span></a> <span class="n">db</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="nb">str</span> <span class="o">|</span> <span class="n">exp</span><span class="o">.</span><span class="n">Identifier</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span>
|
||||
</span><span id="qualify_tables-20"><a href="#qualify_tables-20"><span class="linenos"> 20</span></a> <span class="n">catalog</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="nb">str</span> <span class="o">|</span> <span class="n">exp</span><span class="o">.</span><span class="n">Identifier</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span>
|
||||
</span><span id="qualify_tables-21"><a href="#qualify_tables-21"><span class="linenos"> 21</span></a> <span class="n">schema</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">Schema</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span>
|
||||
</span><span id="qualify_tables-22"><a href="#qualify_tables-22"><span class="linenos"> 22</span></a> <span class="n">dialect</span><span class="p">:</span> <span class="n">DialectType</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span>
|
||||
</span><span id="qualify_tables-23"><a href="#qualify_tables-23"><span class="linenos"> 23</span></a><span class="p">)</span> <span class="o">-></span> <span class="n">E</span><span class="p">:</span>
|
||||
</span><span id="qualify_tables-24"><a href="#qualify_tables-24"><span class="linenos"> 24</span></a><span class="w"> </span><span class="sd">"""</span>
|
||||
</span><span id="qualify_tables-25"><a href="#qualify_tables-25"><span class="linenos"> 25</span></a><span class="sd"> Rewrite sqlglot AST to have fully qualified tables. Join constructs such as</span>
|
||||
</span><span id="qualify_tables-26"><a href="#qualify_tables-26"><span class="linenos"> 26</span></a><span class="sd"> (t1 JOIN t2) AS t will be expanded into (SELECT * FROM t1 AS t1, t2 AS t2) AS t.</span>
|
||||
</span><span id="qualify_tables-27"><a href="#qualify_tables-27"><span class="linenos"> 27</span></a>
|
||||
</span><span id="qualify_tables-28"><a href="#qualify_tables-28"><span class="linenos"> 28</span></a><span class="sd"> Examples:</span>
|
||||
</span><span id="qualify_tables-29"><a href="#qualify_tables-29"><span class="linenos"> 29</span></a><span class="sd"> >>> import sqlglot</span>
|
||||
</span><span id="qualify_tables-30"><a href="#qualify_tables-30"><span class="linenos"> 30</span></a><span class="sd"> >>> expression = sqlglot.parse_one("SELECT 1 FROM tbl")</span>
|
||||
</span><span id="qualify_tables-31"><a href="#qualify_tables-31"><span class="linenos"> 31</span></a><span class="sd"> >>> qualify_tables(expression, db="db").sql()</span>
|
||||
</span><span id="qualify_tables-32"><a href="#qualify_tables-32"><span class="linenos"> 32</span></a><span class="sd"> 'SELECT 1 FROM db.tbl AS tbl'</span>
|
||||
</span><span id="qualify_tables-33"><a href="#qualify_tables-33"><span class="linenos"> 33</span></a><span class="sd"> >>></span>
|
||||
</span><span id="qualify_tables-34"><a href="#qualify_tables-34"><span class="linenos"> 34</span></a><span class="sd"> >>> expression = sqlglot.parse_one("SELECT 1 FROM (t1 JOIN t2) AS t")</span>
|
||||
</span><span id="qualify_tables-35"><a href="#qualify_tables-35"><span class="linenos"> 35</span></a><span class="sd"> >>> qualify_tables(expression).sql()</span>
|
||||
</span><span id="qualify_tables-36"><a href="#qualify_tables-36"><span class="linenos"> 36</span></a><span class="sd"> 'SELECT 1 FROM (SELECT * FROM t1 AS t1, t2 AS t2) AS t'</span>
|
||||
</span><span id="qualify_tables-37"><a href="#qualify_tables-37"><span class="linenos"> 37</span></a>
|
||||
</span><span id="qualify_tables-38"><a href="#qualify_tables-38"><span class="linenos"> 38</span></a><span class="sd"> Args:</span>
|
||||
</span><span id="qualify_tables-39"><a href="#qualify_tables-39"><span class="linenos"> 39</span></a><span class="sd"> expression: Expression to qualify</span>
|
||||
</span><span id="qualify_tables-40"><a href="#qualify_tables-40"><span class="linenos"> 40</span></a><span class="sd"> db: Database name</span>
|
||||
</span><span id="qualify_tables-41"><a href="#qualify_tables-41"><span class="linenos"> 41</span></a><span class="sd"> catalog: Catalog name</span>
|
||||
</span><span id="qualify_tables-42"><a href="#qualify_tables-42"><span class="linenos"> 42</span></a><span class="sd"> schema: A schema to populate</span>
|
||||
</span><span id="qualify_tables-43"><a href="#qualify_tables-43"><span class="linenos"> 43</span></a><span class="sd"> dialect: The dialect to parse catalog and schema into.</span>
|
||||
</span><span id="qualify_tables-44"><a href="#qualify_tables-44"><span class="linenos"> 44</span></a>
|
||||
</span><span id="qualify_tables-45"><a href="#qualify_tables-45"><span class="linenos"> 45</span></a><span class="sd"> Returns:</span>
|
||||
</span><span id="qualify_tables-46"><a href="#qualify_tables-46"><span class="linenos"> 46</span></a><span class="sd"> The qualified expression.</span>
|
||||
</span><span id="qualify_tables-47"><a href="#qualify_tables-47"><span class="linenos"> 47</span></a><span class="sd"> """</span>
|
||||
</span><span id="qualify_tables-48"><a href="#qualify_tables-48"><span class="linenos"> 48</span></a> <span class="n">next_alias_name</span> <span class="o">=</span> <span class="n">name_sequence</span><span class="p">(</span><span class="s2">"_q_"</span><span class="p">)</span>
|
||||
</span><span id="qualify_tables-49"><a href="#qualify_tables-49"><span class="linenos"> 49</span></a> <span class="n">db</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">parse_identifier</span><span class="p">(</span><span class="n">db</span><span class="p">,</span> <span class="n">dialect</span><span class="o">=</span><span class="n">dialect</span><span class="p">)</span> <span class="k">if</span> <span class="n">db</span> <span class="k">else</span> <span class="kc">None</span>
|
||||
</span><span id="qualify_tables-50"><a href="#qualify_tables-50"><span class="linenos"> 50</span></a> <span class="n">catalog</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">parse_identifier</span><span class="p">(</span><span class="n">catalog</span><span class="p">,</span> <span class="n">dialect</span><span class="o">=</span><span class="n">dialect</span><span class="p">)</span> <span class="k">if</span> <span class="n">catalog</span> <span class="k">else</span> <span class="kc">None</span>
|
||||
</span><span id="qualify_tables-51"><a href="#qualify_tables-51"><span class="linenos"> 51</span></a>
|
||||
</span><span id="qualify_tables-52"><a href="#qualify_tables-52"><span class="linenos"> 52</span></a> <span class="k">def</span> <span class="nf">_qualify</span><span class="p">(</span><span class="n">table</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">)</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span>
|
||||
</span><span id="qualify_tables-53"><a href="#qualify_tables-53"><span class="linenos"> 53</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">table</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">Identifier</span><span class="p">):</span>
|
||||
</span><span id="qualify_tables-54"><a href="#qualify_tables-54"><span class="linenos"> 54</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">table</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">"db"</span><span class="p">):</span>
|
||||
</span><span id="qualify_tables-55"><a href="#qualify_tables-55"><span class="linenos"> 55</span></a> <span class="n">table</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"db"</span><span class="p">,</span> <span class="n">db</span><span class="p">)</span>
|
||||
</span><span id="qualify_tables-56"><a href="#qualify_tables-56"><span class="linenos"> 56</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">table</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">"catalog"</span><span class="p">)</span> <span class="ow">and</span> <span class="n">table</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">"db"</span><span class="p">):</span>
|
||||
</span><span id="qualify_tables-57"><a href="#qualify_tables-57"><span class="linenos"> 57</span></a> <span class="n">table</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"catalog"</span><span class="p">,</span> <span class="n">catalog</span><span class="p">)</span>
|
||||
</span><span id="qualify_tables-58"><a href="#qualify_tables-58"><span class="linenos"> 58</span></a>
|
||||
</span><span id="qualify_tables-59"><a href="#qualify_tables-59"><span class="linenos"> 59</span></a> <span class="k">if</span> <span class="p">(</span><span class="n">db</span> <span class="ow">or</span> <span class="n">catalog</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">Query</span><span class="p">):</span>
|
||||
</span><span id="qualify_tables-60"><a href="#qualify_tables-60"><span class="linenos"> 60</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">walk</span><span class="p">(</span><span class="n">prune</span><span class="o">=</span><span class="k">lambda</span> <span class="n">n</span><span class="p">:</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">n</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Query</span><span class="p">)):</span>
|
||||
</span><span id="qualify_tables-61"><a href="#qualify_tables-61"><span class="linenos"> 61</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">):</span>
|
||||
</span><span id="qualify_tables-62"><a href="#qualify_tables-62"><span class="linenos"> 62</span></a> <span class="n">_qualify</span><span class="p">(</span><span class="n">node</span><span class="p">)</span>
|
||||
</span><span id="qualify_tables-63"><a href="#qualify_tables-63"><span class="linenos"> 63</span></a>
|
||||
</span><span id="qualify_tables-64"><a href="#qualify_tables-64"><span class="linenos"> 64</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span>
|
||||
</span><span id="qualify_tables-65"><a href="#qualify_tables-65"><span class="linenos"> 65</span></a> <span class="k">for</span> <span class="n">derived_table</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">chain</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">ctes</span><span class="p">,</span> <span class="n">scope</span><span class="o">.</span><span class="n">derived_tables</span><span class="p">):</span>
|
||||
</span><span id="qualify_tables-66"><a href="#qualify_tables-66"><span class="linenos"> 66</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">derived_table</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subquery</span><span class="p">):</span>
|
||||
</span><span id="qualify_tables-67"><a href="#qualify_tables-67"><span class="linenos"> 67</span></a> <span class="n">unnested</span> <span class="o">=</span> <span class="n">derived_table</span><span class="o">.</span><span class="n">unnest</span><span class="p">()</span>
|
||||
</span><span id="qualify_tables-68"><a href="#qualify_tables-68"><span class="linenos"> 68</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">unnested</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">):</span>
|
||||
</span><span id="qualify_tables-69"><a href="#qualify_tables-69"><span class="linenos"> 69</span></a> <span class="n">joins</span> <span class="o">=</span> <span class="n">unnested</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="s2">"joins"</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span>
|
||||
</span><span id="qualify_tables-70"><a href="#qualify_tables-70"><span class="linenos"> 70</span></a> <span class="n">derived_table</span><span class="o">.</span><span class="n">this</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">select</span><span class="p">(</span><span class="s2">"*"</span><span class="p">)</span><span class="o">.</span><span class="n">from_</span><span class="p">(</span><span class="n">unnested</span><span class="o">.</span><span class="n">copy</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="qualify_tables-71"><a href="#qualify_tables-71"><span class="linenos"> 71</span></a> <span class="n">derived_table</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"joins"</span><span class="p">,</span> <span class="n">joins</span><span class="p">)</span>
|
||||
</span><span id="qualify_tables-72"><a href="#qualify_tables-72"><span class="linenos"> 72</span></a>
|
||||
</span><span id="qualify_tables-73"><a href="#qualify_tables-73"><span class="linenos"> 73</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">derived_table</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">"alias"</span><span class="p">):</span>
|
||||
</span><span id="qualify_tables-74"><a href="#qualify_tables-74"><span class="linenos"> 74</span></a> <span class="n">alias_</span> <span class="o">=</span> <span class="n">next_alias_name</span><span class="p">()</span>
|
||||
</span><span id="qualify_tables-75"><a href="#qualify_tables-75"><span class="linenos"> 75</span></a> <span class="n">derived_table</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">TableAlias</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">alias_</span><span class="p">)))</span>
|
||||
</span><span id="qualify_tables-76"><a href="#qualify_tables-76"><span class="linenos"> 76</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">rename_source</span><span class="p">(</span><span class="kc">None</span><span class="p">,</span> <span class="n">alias_</span><span class="p">)</span>
|
||||
</span><span id="qualify_tables-77"><a href="#qualify_tables-77"><span class="linenos"> 77</span></a>
|
||||
</span><span id="qualify_tables-78"><a href="#qualify_tables-78"><span class="linenos"> 78</span></a> <span class="n">pivots</span> <span class="o">=</span> <span class="n">derived_table</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">"pivots"</span><span class="p">)</span>
|
||||
</span><span id="qualify_tables-79"><a href="#qualify_tables-79"><span class="linenos"> 79</span></a> <span class="k">if</span> <span class="n">pivots</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">pivots</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">alias</span><span class="p">:</span>
|
||||
</span><span id="qualify_tables-80"><a href="#qualify_tables-80"><span class="linenos"> 80</span></a> <span class="n">pivots</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">TableAlias</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">next_alias_name</span><span class="p">())))</span>
|
||||
</span><span id="qualify_tables-81"><a href="#qualify_tables-81"><span class="linenos"> 81</span></a>
|
||||
</span><span id="qualify_tables-82"><a href="#qualify_tables-82"><span class="linenos"> 82</span></a> <span class="n">table_aliases</span> <span class="o">=</span> <span class="p">{}</span>
|
||||
</span><span id="qualify_tables-22"><a href="#qualify_tables-22"><span class="linenos"> 22</span></a> <span class="n">infer_csv_schemas</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">False</span><span class="p">,</span>
|
||||
</span><span id="qualify_tables-23"><a href="#qualify_tables-23"><span class="linenos"> 23</span></a> <span class="n">dialect</span><span class="p">:</span> <span class="n">DialectType</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span>
|
||||
</span><span id="qualify_tables-24"><a href="#qualify_tables-24"><span class="linenos"> 24</span></a><span class="p">)</span> <span class="o">-></span> <span class="n">E</span><span class="p">:</span>
|
||||
</span><span id="qualify_tables-25"><a href="#qualify_tables-25"><span class="linenos"> 25</span></a><span class="w"> </span><span class="sd">"""</span>
|
||||
</span><span id="qualify_tables-26"><a href="#qualify_tables-26"><span class="linenos"> 26</span></a><span class="sd"> Rewrite sqlglot AST to have fully qualified tables. Join constructs such as</span>
|
||||
</span><span id="qualify_tables-27"><a href="#qualify_tables-27"><span class="linenos"> 27</span></a><span class="sd"> (t1 JOIN t2) AS t will be expanded into (SELECT * FROM t1 AS t1, t2 AS t2) AS t.</span>
|
||||
</span><span id="qualify_tables-28"><a href="#qualify_tables-28"><span class="linenos"> 28</span></a>
|
||||
</span><span id="qualify_tables-29"><a href="#qualify_tables-29"><span class="linenos"> 29</span></a><span class="sd"> Examples:</span>
|
||||
</span><span id="qualify_tables-30"><a href="#qualify_tables-30"><span class="linenos"> 30</span></a><span class="sd"> >>> import sqlglot</span>
|
||||
</span><span id="qualify_tables-31"><a href="#qualify_tables-31"><span class="linenos"> 31</span></a><span class="sd"> >>> expression = sqlglot.parse_one("SELECT 1 FROM tbl")</span>
|
||||
</span><span id="qualify_tables-32"><a href="#qualify_tables-32"><span class="linenos"> 32</span></a><span class="sd"> >>> qualify_tables(expression, db="db").sql()</span>
|
||||
</span><span id="qualify_tables-33"><a href="#qualify_tables-33"><span class="linenos"> 33</span></a><span class="sd"> 'SELECT 1 FROM db.tbl AS tbl'</span>
|
||||
</span><span id="qualify_tables-34"><a href="#qualify_tables-34"><span class="linenos"> 34</span></a><span class="sd"> >>></span>
|
||||
</span><span id="qualify_tables-35"><a href="#qualify_tables-35"><span class="linenos"> 35</span></a><span class="sd"> >>> expression = sqlglot.parse_one("SELECT 1 FROM (t1 JOIN t2) AS t")</span>
|
||||
</span><span id="qualify_tables-36"><a href="#qualify_tables-36"><span class="linenos"> 36</span></a><span class="sd"> >>> qualify_tables(expression).sql()</span>
|
||||
</span><span id="qualify_tables-37"><a href="#qualify_tables-37"><span class="linenos"> 37</span></a><span class="sd"> 'SELECT 1 FROM (SELECT * FROM t1 AS t1, t2 AS t2) AS t'</span>
|
||||
</span><span id="qualify_tables-38"><a href="#qualify_tables-38"><span class="linenos"> 38</span></a>
|
||||
</span><span id="qualify_tables-39"><a href="#qualify_tables-39"><span class="linenos"> 39</span></a><span class="sd"> Args:</span>
|
||||
</span><span id="qualify_tables-40"><a href="#qualify_tables-40"><span class="linenos"> 40</span></a><span class="sd"> expression: Expression to qualify</span>
|
||||
</span><span id="qualify_tables-41"><a href="#qualify_tables-41"><span class="linenos"> 41</span></a><span class="sd"> db: Database name</span>
|
||||
</span><span id="qualify_tables-42"><a href="#qualify_tables-42"><span class="linenos"> 42</span></a><span class="sd"> catalog: Catalog name</span>
|
||||
</span><span id="qualify_tables-43"><a href="#qualify_tables-43"><span class="linenos"> 43</span></a><span class="sd"> schema: A schema to populate</span>
|
||||
</span><span id="qualify_tables-44"><a href="#qualify_tables-44"><span class="linenos"> 44</span></a><span class="sd"> infer_csv_schemas: Whether to scan READ_CSV calls in order to infer the CSVs' schemas.</span>
|
||||
</span><span id="qualify_tables-45"><a href="#qualify_tables-45"><span class="linenos"> 45</span></a><span class="sd"> dialect: The dialect to parse catalog and schema into.</span>
|
||||
</span><span id="qualify_tables-46"><a href="#qualify_tables-46"><span class="linenos"> 46</span></a>
|
||||
</span><span id="qualify_tables-47"><a href="#qualify_tables-47"><span class="linenos"> 47</span></a><span class="sd"> Returns:</span>
|
||||
</span><span id="qualify_tables-48"><a href="#qualify_tables-48"><span class="linenos"> 48</span></a><span class="sd"> The qualified expression.</span>
|
||||
</span><span id="qualify_tables-49"><a href="#qualify_tables-49"><span class="linenos"> 49</span></a><span class="sd"> """</span>
|
||||
</span><span id="qualify_tables-50"><a href="#qualify_tables-50"><span class="linenos"> 50</span></a> <span class="n">next_alias_name</span> <span class="o">=</span> <span class="n">name_sequence</span><span class="p">(</span><span class="s2">"_q_"</span><span class="p">)</span>
|
||||
</span><span id="qualify_tables-51"><a href="#qualify_tables-51"><span class="linenos"> 51</span></a> <span class="n">db</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">parse_identifier</span><span class="p">(</span><span class="n">db</span><span class="p">,</span> <span class="n">dialect</span><span class="o">=</span><span class="n">dialect</span><span class="p">)</span> <span class="k">if</span> <span class="n">db</span> <span class="k">else</span> <span class="kc">None</span>
|
||||
</span><span id="qualify_tables-52"><a href="#qualify_tables-52"><span class="linenos"> 52</span></a> <span class="n">catalog</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">parse_identifier</span><span class="p">(</span><span class="n">catalog</span><span class="p">,</span> <span class="n">dialect</span><span class="o">=</span><span class="n">dialect</span><span class="p">)</span> <span class="k">if</span> <span class="n">catalog</span> <span class="k">else</span> <span class="kc">None</span>
|
||||
</span><span id="qualify_tables-53"><a href="#qualify_tables-53"><span class="linenos"> 53</span></a>
|
||||
</span><span id="qualify_tables-54"><a href="#qualify_tables-54"><span class="linenos"> 54</span></a> <span class="k">def</span> <span class="nf">_qualify</span><span class="p">(</span><span class="n">table</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">)</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span>
|
||||
</span><span id="qualify_tables-55"><a href="#qualify_tables-55"><span class="linenos"> 55</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">table</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">Identifier</span><span class="p">):</span>
|
||||
</span><span id="qualify_tables-56"><a href="#qualify_tables-56"><span class="linenos"> 56</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">table</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">"db"</span><span class="p">):</span>
|
||||
</span><span id="qualify_tables-57"><a href="#qualify_tables-57"><span class="linenos"> 57</span></a> <span class="n">table</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"db"</span><span class="p">,</span> <span class="n">db</span><span class="p">)</span>
|
||||
</span><span id="qualify_tables-58"><a href="#qualify_tables-58"><span class="linenos"> 58</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">table</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">"catalog"</span><span class="p">)</span> <span class="ow">and</span> <span class="n">table</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">"db"</span><span class="p">):</span>
|
||||
</span><span id="qualify_tables-59"><a href="#qualify_tables-59"><span class="linenos"> 59</span></a> <span class="n">table</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"catalog"</span><span class="p">,</span> <span class="n">catalog</span><span class="p">)</span>
|
||||
</span><span id="qualify_tables-60"><a href="#qualify_tables-60"><span class="linenos"> 60</span></a>
|
||||
</span><span id="qualify_tables-61"><a href="#qualify_tables-61"><span class="linenos"> 61</span></a> <span class="k">if</span> <span class="p">(</span><span class="n">db</span> <span class="ow">or</span> <span class="n">catalog</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">Query</span><span class="p">):</span>
|
||||
</span><span id="qualify_tables-62"><a href="#qualify_tables-62"><span class="linenos"> 62</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">walk</span><span class="p">(</span><span class="n">prune</span><span class="o">=</span><span class="k">lambda</span> <span class="n">n</span><span class="p">:</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">n</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Query</span><span class="p">)):</span>
|
||||
</span><span id="qualify_tables-63"><a href="#qualify_tables-63"><span class="linenos"> 63</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">):</span>
|
||||
</span><span id="qualify_tables-64"><a href="#qualify_tables-64"><span class="linenos"> 64</span></a> <span class="n">_qualify</span><span class="p">(</span><span class="n">node</span><span class="p">)</span>
|
||||
</span><span id="qualify_tables-65"><a href="#qualify_tables-65"><span class="linenos"> 65</span></a>
|
||||
</span><span id="qualify_tables-66"><a href="#qualify_tables-66"><span class="linenos"> 66</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span>
|
||||
</span><span id="qualify_tables-67"><a href="#qualify_tables-67"><span class="linenos"> 67</span></a> <span class="k">for</span> <span class="n">derived_table</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">chain</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">ctes</span><span class="p">,</span> <span class="n">scope</span><span class="o">.</span><span class="n">derived_tables</span><span class="p">):</span>
|
||||
</span><span id="qualify_tables-68"><a href="#qualify_tables-68"><span class="linenos"> 68</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">derived_table</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subquery</span><span class="p">):</span>
|
||||
</span><span id="qualify_tables-69"><a href="#qualify_tables-69"><span class="linenos"> 69</span></a> <span class="n">unnested</span> <span class="o">=</span> <span class="n">derived_table</span><span class="o">.</span><span class="n">unnest</span><span class="p">()</span>
|
||||
</span><span id="qualify_tables-70"><a href="#qualify_tables-70"><span class="linenos"> 70</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">unnested</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">):</span>
|
||||
</span><span id="qualify_tables-71"><a href="#qualify_tables-71"><span class="linenos"> 71</span></a> <span class="n">joins</span> <span class="o">=</span> <span class="n">unnested</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="s2">"joins"</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span>
|
||||
</span><span id="qualify_tables-72"><a href="#qualify_tables-72"><span class="linenos"> 72</span></a> <span class="n">derived_table</span><span class="o">.</span><span class="n">this</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">select</span><span class="p">(</span><span class="s2">"*"</span><span class="p">)</span><span class="o">.</span><span class="n">from_</span><span class="p">(</span><span class="n">unnested</span><span class="o">.</span><span class="n">copy</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="qualify_tables-73"><a href="#qualify_tables-73"><span class="linenos"> 73</span></a> <span class="n">derived_table</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"joins"</span><span class="p">,</span> <span class="n">joins</span><span class="p">)</span>
|
||||
</span><span id="qualify_tables-74"><a href="#qualify_tables-74"><span class="linenos"> 74</span></a>
|
||||
</span><span id="qualify_tables-75"><a href="#qualify_tables-75"><span class="linenos"> 75</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">derived_table</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">"alias"</span><span class="p">):</span>
|
||||
</span><span id="qualify_tables-76"><a href="#qualify_tables-76"><span class="linenos"> 76</span></a> <span class="n">alias_</span> <span class="o">=</span> <span class="n">next_alias_name</span><span class="p">()</span>
|
||||
</span><span id="qualify_tables-77"><a href="#qualify_tables-77"><span class="linenos"> 77</span></a> <span class="n">derived_table</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">TableAlias</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">alias_</span><span class="p">)))</span>
|
||||
</span><span id="qualify_tables-78"><a href="#qualify_tables-78"><span class="linenos"> 78</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">rename_source</span><span class="p">(</span><span class="kc">None</span><span class="p">,</span> <span class="n">alias_</span><span class="p">)</span>
|
||||
</span><span id="qualify_tables-79"><a href="#qualify_tables-79"><span class="linenos"> 79</span></a>
|
||||
</span><span id="qualify_tables-80"><a href="#qualify_tables-80"><span class="linenos"> 80</span></a> <span class="n">pivots</span> <span class="o">=</span> <span class="n">derived_table</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">"pivots"</span><span class="p">)</span>
|
||||
</span><span id="qualify_tables-81"><a href="#qualify_tables-81"><span class="linenos"> 81</span></a> <span class="k">if</span> <span class="n">pivots</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">pivots</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">alias</span><span class="p">:</span>
|
||||
</span><span id="qualify_tables-82"><a href="#qualify_tables-82"><span class="linenos"> 82</span></a> <span class="n">pivots</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">TableAlias</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">next_alias_name</span><span class="p">())))</span>
|
||||
</span><span id="qualify_tables-83"><a href="#qualify_tables-83"><span class="linenos"> 83</span></a>
|
||||
</span><span id="qualify_tables-84"><a href="#qualify_tables-84"><span class="linenos"> 84</span></a> <span class="k">for</span> <span class="n">name</span><span class="p">,</span> <span class="n">source</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="o">.</span><span class="n">items</span><span class="p">():</span>
|
||||
</span><span id="qualify_tables-85"><a href="#qualify_tables-85"><span class="linenos"> 85</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">):</span>
|
||||
</span><span id="qualify_tables-86"><a href="#qualify_tables-86"><span class="linenos"> 86</span></a> <span class="n">pivots</span> <span class="o">=</span> <span class="n">pivots</span> <span class="o">=</span> <span class="n">source</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">"pivots"</span><span class="p">)</span>
|
||||
</span><span id="qualify_tables-87"><a href="#qualify_tables-87"><span class="linenos"> 87</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">source</span><span class="o">.</span><span class="n">alias</span><span class="p">:</span>
|
||||
</span><span id="qualify_tables-88"><a href="#qualify_tables-88"><span class="linenos"> 88</span></a> <span class="c1"># Don't add the pivot's alias to the pivoted table, use the table's name instead</span>
|
||||
</span><span id="qualify_tables-89"><a href="#qualify_tables-89"><span class="linenos"> 89</span></a> <span class="k">if</span> <span class="n">pivots</span> <span class="ow">and</span> <span class="n">pivots</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">alias</span> <span class="o">==</span> <span class="n">name</span><span class="p">:</span>
|
||||
</span><span id="qualify_tables-90"><a href="#qualify_tables-90"><span class="linenos"> 90</span></a> <span class="n">name</span> <span class="o">=</span> <span class="n">source</span><span class="o">.</span><span class="n">name</span>
|
||||
</span><span id="qualify_tables-91"><a href="#qualify_tables-91"><span class="linenos"> 91</span></a>
|
||||
</span><span id="qualify_tables-92"><a href="#qualify_tables-92"><span class="linenos"> 92</span></a> <span class="c1"># Mutates the source by attaching an alias to it</span>
|
||||
</span><span id="qualify_tables-93"><a href="#qualify_tables-93"><span class="linenos"> 93</span></a> <span class="n">alias</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">name</span> <span class="ow">or</span> <span class="n">source</span><span class="o">.</span><span class="n">name</span> <span class="ow">or</span> <span class="n">next_alias_name</span><span class="p">(),</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> <span class="n">table</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span>
|
||||
</span><span id="qualify_tables-94"><a href="#qualify_tables-94"><span class="linenos"> 94</span></a>
|
||||
</span><span id="qualify_tables-95"><a href="#qualify_tables-95"><span class="linenos"> 95</span></a> <span class="n">table_aliases</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">p</span><span class="o">.</span><span class="n">name</span> <span class="k">for</span> <span class="n">p</span> <span class="ow">in</span> <span class="n">source</span><span class="o">.</span><span class="n">parts</span><span class="p">)]</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span>
|
||||
</span><span id="qualify_tables-96"><a href="#qualify_tables-96"><span class="linenos"> 96</span></a> <span class="n">source</span><span class="o">.</span><span class="n">alias</span>
|
||||
</span><span id="qualify_tables-97"><a href="#qualify_tables-97"><span class="linenos"> 97</span></a> <span class="p">)</span>
|
||||
</span><span id="qualify_tables-98"><a href="#qualify_tables-98"><span class="linenos"> 98</span></a>
|
||||
</span><span id="qualify_tables-99"><a href="#qualify_tables-99"><span class="linenos"> 99</span></a> <span class="n">_qualify</span><span class="p">(</span><span class="n">source</span><span class="p">)</span>
|
||||
</span><span id="qualify_tables-84"><a href="#qualify_tables-84"><span class="linenos"> 84</span></a> <span class="n">table_aliases</span> <span class="o">=</span> <span class="p">{}</span>
|
||||
</span><span id="qualify_tables-85"><a href="#qualify_tables-85"><span class="linenos"> 85</span></a>
|
||||
</span><span id="qualify_tables-86"><a href="#qualify_tables-86"><span class="linenos"> 86</span></a> <span class="k">for</span> <span class="n">name</span><span class="p">,</span> <span class="n">source</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="o">.</span><span class="n">items</span><span class="p">():</span>
|
||||
</span><span id="qualify_tables-87"><a href="#qualify_tables-87"><span class="linenos"> 87</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">):</span>
|
||||
</span><span id="qualify_tables-88"><a href="#qualify_tables-88"><span class="linenos"> 88</span></a> <span class="n">pivots</span> <span class="o">=</span> <span class="n">pivots</span> <span class="o">=</span> <span class="n">source</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">"pivots"</span><span class="p">)</span>
|
||||
</span><span id="qualify_tables-89"><a href="#qualify_tables-89"><span class="linenos"> 89</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">source</span><span class="o">.</span><span class="n">alias</span><span class="p">:</span>
|
||||
</span><span id="qualify_tables-90"><a href="#qualify_tables-90"><span class="linenos"> 90</span></a> <span class="c1"># Don't add the pivot's alias to the pivoted table, use the table's name instead</span>
|
||||
</span><span id="qualify_tables-91"><a href="#qualify_tables-91"><span class="linenos"> 91</span></a> <span class="k">if</span> <span class="n">pivots</span> <span class="ow">and</span> <span class="n">pivots</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">alias</span> <span class="o">==</span> <span class="n">name</span><span class="p">:</span>
|
||||
</span><span id="qualify_tables-92"><a href="#qualify_tables-92"><span class="linenos"> 92</span></a> <span class="n">name</span> <span class="o">=</span> <span class="n">source</span><span class="o">.</span><span class="n">name</span>
|
||||
</span><span id="qualify_tables-93"><a href="#qualify_tables-93"><span class="linenos"> 93</span></a>
|
||||
</span><span id="qualify_tables-94"><a href="#qualify_tables-94"><span class="linenos"> 94</span></a> <span class="c1"># Mutates the source by attaching an alias to it</span>
|
||||
</span><span id="qualify_tables-95"><a href="#qualify_tables-95"><span class="linenos"> 95</span></a> <span class="n">alias</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">name</span> <span class="ow">or</span> <span class="n">source</span><span class="o">.</span><span class="n">name</span> <span class="ow">or</span> <span class="n">next_alias_name</span><span class="p">(),</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> <span class="n">table</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span>
|
||||
</span><span id="qualify_tables-96"><a href="#qualify_tables-96"><span class="linenos"> 96</span></a>
|
||||
</span><span id="qualify_tables-97"><a href="#qualify_tables-97"><span class="linenos"> 97</span></a> <span class="n">table_aliases</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">p</span><span class="o">.</span><span class="n">name</span> <span class="k">for</span> <span class="n">p</span> <span class="ow">in</span> <span class="n">source</span><span class="o">.</span><span class="n">parts</span><span class="p">)]</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span>
|
||||
</span><span id="qualify_tables-98"><a href="#qualify_tables-98"><span class="linenos"> 98</span></a> <span class="n">source</span><span class="o">.</span><span class="n">alias</span>
|
||||
</span><span id="qualify_tables-99"><a href="#qualify_tables-99"><span class="linenos"> 99</span></a> <span class="p">)</span>
|
||||
</span><span id="qualify_tables-100"><a href="#qualify_tables-100"><span class="linenos">100</span></a>
|
||||
</span><span id="qualify_tables-101"><a href="#qualify_tables-101"><span class="linenos">101</span></a> <span class="k">if</span> <span class="n">pivots</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">pivots</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">alias</span><span class="p">:</span>
|
||||
</span><span id="qualify_tables-102"><a href="#qualify_tables-102"><span class="linenos">102</span></a> <span class="n">pivots</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">set</span><span class="p">(</span>
|
||||
</span><span id="qualify_tables-103"><a href="#qualify_tables-103"><span class="linenos">103</span></a> <span class="s2">"alias"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">TableAlias</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">next_alias_name</span><span class="p">()))</span>
|
||||
</span><span id="qualify_tables-104"><a href="#qualify_tables-104"><span class="linenos">104</span></a> <span class="p">)</span>
|
||||
</span><span id="qualify_tables-105"><a href="#qualify_tables-105"><span class="linenos">105</span></a>
|
||||
</span><span id="qualify_tables-106"><a href="#qualify_tables-106"><span class="linenos">106</span></a> <span class="k">if</span> <span class="n">schema</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</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">ReadCSV</span><span class="p">):</span>
|
||||
</span><span id="qualify_tables-107"><a href="#qualify_tables-107"><span class="linenos">107</span></a> <span class="k">with</span> <span class="n">csv_reader</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">this</span><span class="p">)</span> <span class="k">as</span> <span class="n">reader</span><span class="p">:</span>
|
||||
</span><span id="qualify_tables-108"><a href="#qualify_tables-108"><span class="linenos">108</span></a> <span class="n">header</span> <span class="o">=</span> <span class="nb">next</span><span class="p">(</span><span class="n">reader</span><span class="p">)</span>
|
||||
</span><span id="qualify_tables-109"><a href="#qualify_tables-109"><span class="linenos">109</span></a> <span class="n">columns</span> <span class="o">=</span> <span class="nb">next</span><span class="p">(</span><span class="n">reader</span><span class="p">)</span>
|
||||
</span><span id="qualify_tables-110"><a href="#qualify_tables-110"><span class="linenos">110</span></a> <span class="n">schema</span><span class="o">.</span><span class="n">add_table</span><span class="p">(</span>
|
||||
</span><span id="qualify_tables-111"><a href="#qualify_tables-111"><span class="linenos">111</span></a> <span class="n">source</span><span class="p">,</span>
|
||||
</span><span id="qualify_tables-112"><a href="#qualify_tables-112"><span class="linenos">112</span></a> <span class="p">{</span><span class="n">k</span><span class="p">:</span> <span class="nb">type</span><span class="p">(</span><span class="n">v</span><span class="p">)</span><span class="o">.</span><span class="vm">__name__</span> <span class="k">for</span> <span class="n">k</span><span class="p">,</span> <span class="n">v</span> <span class="ow">in</span> <span class="nb">zip</span><span class="p">(</span><span class="n">header</span><span class="p">,</span> <span class="n">columns</span><span class="p">)},</span>
|
||||
</span><span id="qualify_tables-113"><a href="#qualify_tables-113"><span class="linenos">113</span></a> <span class="n">match_depth</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span>
|
||||
</span><span id="qualify_tables-114"><a href="#qualify_tables-114"><span class="linenos">114</span></a> <span class="p">)</span>
|
||||
</span><span id="qualify_tables-115"><a href="#qualify_tables-115"><span class="linenos">115</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">Scope</span><span class="p">)</span> <span class="ow">and</span> <span class="n">source</span><span class="o">.</span><span class="n">is_udtf</span><span class="p">:</span>
|
||||
</span><span id="qualify_tables-116"><a href="#qualify_tables-116"><span class="linenos">116</span></a> <span class="n">udtf</span> <span class="o">=</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span>
|
||||
</span><span id="qualify_tables-117"><a href="#qualify_tables-117"><span class="linenos">117</span></a> <span class="n">table_alias</span> <span class="o">=</span> <span class="n">udtf</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">"alias"</span><span class="p">)</span> <span class="ow">or</span> <span class="n">exp</span><span class="o">.</span><span class="n">TableAlias</span><span class="p">(</span>
|
||||
</span><span id="qualify_tables-118"><a href="#qualify_tables-118"><span class="linenos">118</span></a> <span class="n">this</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">next_alias_name</span><span class="p">())</span>
|
||||
</span><span id="qualify_tables-119"><a href="#qualify_tables-119"><span class="linenos">119</span></a> <span class="p">)</span>
|
||||
</span><span id="qualify_tables-120"><a href="#qualify_tables-120"><span class="linenos">120</span></a> <span class="n">udtf</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">,</span> <span class="n">table_alias</span><span class="p">)</span>
|
||||
</span><span id="qualify_tables-121"><a href="#qualify_tables-121"><span class="linenos">121</span></a>
|
||||
</span><span id="qualify_tables-122"><a href="#qualify_tables-122"><span class="linenos">122</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">table_alias</span><span class="o">.</span><span class="n">name</span><span class="p">:</span>
|
||||
</span><span id="qualify_tables-123"><a href="#qualify_tables-123"><span class="linenos">123</span></a> <span class="n">table_alias</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"this"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">next_alias_name</span><span class="p">()))</span>
|
||||
</span><span id="qualify_tables-124"><a href="#qualify_tables-124"><span class="linenos">124</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">udtf</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Values</span><span class="p">)</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">table_alias</span><span class="o">.</span><span class="n">columns</span><span class="p">:</span>
|
||||
</span><span id="qualify_tables-125"><a href="#qualify_tables-125"><span class="linenos">125</span></a> <span class="k">for</span> <span class="n">i</span><span class="p">,</span> <span class="n">e</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="n">udtf</span><span class="o">.</span><span class="n">expressions</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">expressions</span><span class="p">):</span>
|
||||
</span><span id="qualify_tables-126"><a href="#qualify_tables-126"><span class="linenos">126</span></a> <span class="n">table_alias</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s2">"columns"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="sa">f</span><span class="s2">"_col_</span><span class="si">{</span><span class="n">i</span><span class="si">}</span><span class="s2">"</span><span class="p">))</span>
|
||||
</span><span id="qualify_tables-127"><a href="#qualify_tables-127"><span class="linenos">127</span></a> <span class="k">else</span><span class="p">:</span>
|
||||
</span><span id="qualify_tables-128"><a href="#qualify_tables-128"><span class="linenos">128</span></a> <span class="k">for</span> <span class="n">node</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">walk</span><span class="p">():</span>
|
||||
</span><span id="qualify_tables-129"><a href="#qualify_tables-129"><span class="linenos">129</span></a> <span class="k">if</span> <span class="p">(</span>
|
||||
</span><span id="qualify_tables-130"><a href="#qualify_tables-130"><span class="linenos">130</span></a> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">)</span>
|
||||
</span><span id="qualify_tables-131"><a href="#qualify_tables-131"><span class="linenos">131</span></a> <span class="ow">and</span> <span class="ow">not</span> <span class="n">node</span><span class="o">.</span><span class="n">alias</span>
|
||||
</span><span id="qualify_tables-132"><a href="#qualify_tables-132"><span class="linenos">132</span></a> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="o">.</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">From</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="qualify_tables-133"><a href="#qualify_tables-133"><span class="linenos">133</span></a> <span class="p">):</span>
|
||||
</span><span id="qualify_tables-134"><a href="#qualify_tables-134"><span class="linenos">134</span></a> <span class="c1"># Mutates the table by attaching an alias to it</span>
|
||||
</span><span id="qualify_tables-135"><a href="#qualify_tables-135"><span class="linenos">135</span></a> <span class="n">alias</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">node</span><span class="o">.</span><span class="n">name</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> <span class="n">table</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span>
|
||||
</span><span id="qualify_tables-136"><a href="#qualify_tables-136"><span class="linenos">136</span></a>
|
||||
</span><span id="qualify_tables-137"><a href="#qualify_tables-137"><span class="linenos">137</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">columns</span><span class="p">:</span>
|
||||
</span><span id="qualify_tables-138"><a href="#qualify_tables-138"><span class="linenos">138</span></a> <span class="k">if</span> <span class="n">column</span><span class="o">.</span><span class="n">db</span><span class="p">:</span>
|
||||
</span><span id="qualify_tables-139"><a href="#qualify_tables-139"><span class="linenos">139</span></a> <span class="n">table_alias</span> <span class="o">=</span> <span class="n">table_aliases</span><span class="o">.</span><span class="n">get</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">p</span><span class="o">.</span><span class="n">name</span> <span class="k">for</span> <span class="n">p</span> <span class="ow">in</span> <span class="n">column</span><span class="o">.</span><span class="n">parts</span><span class="p">[</span><span class="mi">0</span><span class="p">:</span><span class="o">-</span><span class="mi">1</span><span class="p">]))</span>
|
||||
</span><span id="qualify_tables-140"><a href="#qualify_tables-140"><span class="linenos">140</span></a>
|
||||
</span><span id="qualify_tables-141"><a href="#qualify_tables-141"><span class="linenos">141</span></a> <span class="k">if</span> <span class="n">table_alias</span><span class="p">:</span>
|
||||
</span><span id="qualify_tables-142"><a href="#qualify_tables-142"><span class="linenos">142</span></a> <span class="k">for</span> <span class="n">p</span> <span class="ow">in</span> <span class="n">exp</span><span class="o">.</span><span class="n">COLUMN_PARTS</span><span class="p">[</span><span class="mi">1</span><span class="p">:]:</span>
|
||||
</span><span id="qualify_tables-143"><a href="#qualify_tables-143"><span class="linenos">143</span></a> <span class="n">column</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="n">p</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span>
|
||||
</span><span id="qualify_tables-144"><a href="#qualify_tables-144"><span class="linenos">144</span></a> <span class="n">column</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"table"</span><span class="p">,</span> <span class="n">table_alias</span><span class="p">)</span>
|
||||
</span><span id="qualify_tables-145"><a href="#qualify_tables-145"><span class="linenos">145</span></a>
|
||||
</span><span id="qualify_tables-146"><a href="#qualify_tables-146"><span class="linenos">146</span></a> <span class="k">return</span> <span class="n">expression</span>
|
||||
</span><span id="qualify_tables-101"><a href="#qualify_tables-101"><span class="linenos">101</span></a> <span class="n">_qualify</span><span class="p">(</span><span class="n">source</span><span class="p">)</span>
|
||||
</span><span id="qualify_tables-102"><a href="#qualify_tables-102"><span class="linenos">102</span></a>
|
||||
</span><span id="qualify_tables-103"><a href="#qualify_tables-103"><span class="linenos">103</span></a> <span class="k">if</span> <span class="n">pivots</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">pivots</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">alias</span><span class="p">:</span>
|
||||
</span><span id="qualify_tables-104"><a href="#qualify_tables-104"><span class="linenos">104</span></a> <span class="n">pivots</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">set</span><span class="p">(</span>
|
||||
</span><span id="qualify_tables-105"><a href="#qualify_tables-105"><span class="linenos">105</span></a> <span class="s2">"alias"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">TableAlias</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">next_alias_name</span><span class="p">()))</span>
|
||||
</span><span id="qualify_tables-106"><a href="#qualify_tables-106"><span class="linenos">106</span></a> <span class="p">)</span>
|
||||
</span><span id="qualify_tables-107"><a href="#qualify_tables-107"><span class="linenos">107</span></a>
|
||||
</span><span id="qualify_tables-108"><a href="#qualify_tables-108"><span class="linenos">108</span></a> <span class="k">if</span> <span class="n">infer_csv_schemas</span> <span class="ow">and</span> <span class="n">schema</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</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">ReadCSV</span><span class="p">):</span>
|
||||
</span><span id="qualify_tables-109"><a href="#qualify_tables-109"><span class="linenos">109</span></a> <span class="k">with</span> <span class="n">csv_reader</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">this</span><span class="p">)</span> <span class="k">as</span> <span class="n">reader</span><span class="p">:</span>
|
||||
</span><span id="qualify_tables-110"><a href="#qualify_tables-110"><span class="linenos">110</span></a> <span class="n">header</span> <span class="o">=</span> <span class="nb">next</span><span class="p">(</span><span class="n">reader</span><span class="p">)</span>
|
||||
</span><span id="qualify_tables-111"><a href="#qualify_tables-111"><span class="linenos">111</span></a> <span class="n">columns</span> <span class="o">=</span> <span class="nb">next</span><span class="p">(</span><span class="n">reader</span><span class="p">)</span>
|
||||
</span><span id="qualify_tables-112"><a href="#qualify_tables-112"><span class="linenos">112</span></a> <span class="n">schema</span><span class="o">.</span><span class="n">add_table</span><span class="p">(</span>
|
||||
</span><span id="qualify_tables-113"><a href="#qualify_tables-113"><span class="linenos">113</span></a> <span class="n">source</span><span class="p">,</span>
|
||||
</span><span id="qualify_tables-114"><a href="#qualify_tables-114"><span class="linenos">114</span></a> <span class="p">{</span><span class="n">k</span><span class="p">:</span> <span class="nb">type</span><span class="p">(</span><span class="n">v</span><span class="p">)</span><span class="o">.</span><span class="vm">__name__</span> <span class="k">for</span> <span class="n">k</span><span class="p">,</span> <span class="n">v</span> <span class="ow">in</span> <span class="nb">zip</span><span class="p">(</span><span class="n">header</span><span class="p">,</span> <span class="n">columns</span><span class="p">)},</span>
|
||||
</span><span id="qualify_tables-115"><a href="#qualify_tables-115"><span class="linenos">115</span></a> <span class="n">match_depth</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span>
|
||||
</span><span id="qualify_tables-116"><a href="#qualify_tables-116"><span class="linenos">116</span></a> <span class="p">)</span>
|
||||
</span><span id="qualify_tables-117"><a href="#qualify_tables-117"><span class="linenos">117</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">Scope</span><span class="p">)</span> <span class="ow">and</span> <span class="n">source</span><span class="o">.</span><span class="n">is_udtf</span><span class="p">:</span>
|
||||
</span><span id="qualify_tables-118"><a href="#qualify_tables-118"><span class="linenos">118</span></a> <span class="n">udtf</span> <span class="o">=</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span>
|
||||
</span><span id="qualify_tables-119"><a href="#qualify_tables-119"><span class="linenos">119</span></a> <span class="n">table_alias</span> <span class="o">=</span> <span class="n">udtf</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">"alias"</span><span class="p">)</span> <span class="ow">or</span> <span class="n">exp</span><span class="o">.</span><span class="n">TableAlias</span><span class="p">(</span>
|
||||
</span><span id="qualify_tables-120"><a href="#qualify_tables-120"><span class="linenos">120</span></a> <span class="n">this</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">next_alias_name</span><span class="p">())</span>
|
||||
</span><span id="qualify_tables-121"><a href="#qualify_tables-121"><span class="linenos">121</span></a> <span class="p">)</span>
|
||||
</span><span id="qualify_tables-122"><a href="#qualify_tables-122"><span class="linenos">122</span></a> <span class="n">udtf</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">,</span> <span class="n">table_alias</span><span class="p">)</span>
|
||||
</span><span id="qualify_tables-123"><a href="#qualify_tables-123"><span class="linenos">123</span></a>
|
||||
</span><span id="qualify_tables-124"><a href="#qualify_tables-124"><span class="linenos">124</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">table_alias</span><span class="o">.</span><span class="n">name</span><span class="p">:</span>
|
||||
</span><span id="qualify_tables-125"><a href="#qualify_tables-125"><span class="linenos">125</span></a> <span class="n">table_alias</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"this"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">next_alias_name</span><span class="p">()))</span>
|
||||
</span><span id="qualify_tables-126"><a href="#qualify_tables-126"><span class="linenos">126</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">udtf</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Values</span><span class="p">)</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">table_alias</span><span class="o">.</span><span class="n">columns</span><span class="p">:</span>
|
||||
</span><span id="qualify_tables-127"><a href="#qualify_tables-127"><span class="linenos">127</span></a> <span class="k">for</span> <span class="n">i</span><span class="p">,</span> <span class="n">e</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="n">udtf</span><span class="o">.</span><span class="n">expressions</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">expressions</span><span class="p">):</span>
|
||||
</span><span id="qualify_tables-128"><a href="#qualify_tables-128"><span class="linenos">128</span></a> <span class="n">table_alias</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s2">"columns"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="sa">f</span><span class="s2">"_col_</span><span class="si">{</span><span class="n">i</span><span class="si">}</span><span class="s2">"</span><span class="p">))</span>
|
||||
</span><span id="qualify_tables-129"><a href="#qualify_tables-129"><span class="linenos">129</span></a> <span class="k">else</span><span class="p">:</span>
|
||||
</span><span id="qualify_tables-130"><a href="#qualify_tables-130"><span class="linenos">130</span></a> <span class="k">for</span> <span class="n">node</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">walk</span><span class="p">():</span>
|
||||
</span><span id="qualify_tables-131"><a href="#qualify_tables-131"><span class="linenos">131</span></a> <span class="k">if</span> <span class="p">(</span>
|
||||
</span><span id="qualify_tables-132"><a href="#qualify_tables-132"><span class="linenos">132</span></a> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">)</span>
|
||||
</span><span id="qualify_tables-133"><a href="#qualify_tables-133"><span class="linenos">133</span></a> <span class="ow">and</span> <span class="ow">not</span> <span class="n">node</span><span class="o">.</span><span class="n">alias</span>
|
||||
</span><span id="qualify_tables-134"><a href="#qualify_tables-134"><span class="linenos">134</span></a> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="o">.</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">From</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="qualify_tables-135"><a href="#qualify_tables-135"><span class="linenos">135</span></a> <span class="p">):</span>
|
||||
</span><span id="qualify_tables-136"><a href="#qualify_tables-136"><span class="linenos">136</span></a> <span class="c1"># Mutates the table by attaching an alias to it</span>
|
||||
</span><span id="qualify_tables-137"><a href="#qualify_tables-137"><span class="linenos">137</span></a> <span class="n">alias</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">node</span><span class="o">.</span><span class="n">name</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> <span class="n">table</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span>
|
||||
</span><span id="qualify_tables-138"><a href="#qualify_tables-138"><span class="linenos">138</span></a>
|
||||
</span><span id="qualify_tables-139"><a href="#qualify_tables-139"><span class="linenos">139</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">columns</span><span class="p">:</span>
|
||||
</span><span id="qualify_tables-140"><a href="#qualify_tables-140"><span class="linenos">140</span></a> <span class="k">if</span> <span class="n">column</span><span class="o">.</span><span class="n">db</span><span class="p">:</span>
|
||||
</span><span id="qualify_tables-141"><a href="#qualify_tables-141"><span class="linenos">141</span></a> <span class="n">table_alias</span> <span class="o">=</span> <span class="n">table_aliases</span><span class="o">.</span><span class="n">get</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">p</span><span class="o">.</span><span class="n">name</span> <span class="k">for</span> <span class="n">p</span> <span class="ow">in</span> <span class="n">column</span><span class="o">.</span><span class="n">parts</span><span class="p">[</span><span class="mi">0</span><span class="p">:</span><span class="o">-</span><span class="mi">1</span><span class="p">]))</span>
|
||||
</span><span id="qualify_tables-142"><a href="#qualify_tables-142"><span class="linenos">142</span></a>
|
||||
</span><span id="qualify_tables-143"><a href="#qualify_tables-143"><span class="linenos">143</span></a> <span class="k">if</span> <span class="n">table_alias</span><span class="p">:</span>
|
||||
</span><span id="qualify_tables-144"><a href="#qualify_tables-144"><span class="linenos">144</span></a> <span class="k">for</span> <span class="n">p</span> <span class="ow">in</span> <span class="n">exp</span><span class="o">.</span><span class="n">COLUMN_PARTS</span><span class="p">[</span><span class="mi">1</span><span class="p">:]:</span>
|
||||
</span><span id="qualify_tables-145"><a href="#qualify_tables-145"><span class="linenos">145</span></a> <span class="n">column</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="n">p</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span>
|
||||
</span><span id="qualify_tables-146"><a href="#qualify_tables-146"><span class="linenos">146</span></a> <span class="n">column</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"table"</span><span class="p">,</span> <span class="n">table_alias</span><span class="p">)</span>
|
||||
</span><span id="qualify_tables-147"><a href="#qualify_tables-147"><span class="linenos">147</span></a>
|
||||
</span><span id="qualify_tables-148"><a href="#qualify_tables-148"><span class="linenos">148</span></a> <span class="k">return</span> <span class="n">expression</span>
|
||||
</span></pre></div>
|
||||
|
||||
|
||||
|
|
@ -375,6 +379,7 @@
|
|||
<li><strong>db:</strong> Database name</li>
|
||||
<li><strong>catalog:</strong> Catalog name</li>
|
||||
<li><strong>schema:</strong> A schema to populate</li>
|
||||
<li><strong>infer_csv_schemas:</strong> Whether to scan READ_CSV calls in order to infer the CSVs' schemas.</li>
|
||||
<li><strong>dialect:</strong> The dialect to parse catalog and schema into.</li>
|
||||
</ul>
|
||||
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue