Merging upstream version 21.1.1.
Signed-off-by: Daniel Baumann <daniel@debian.org>
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</span><span id="L-38"><a href="#L-38"><span class="linenos"> 38</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">Date</span><span class="p">)</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">node</span><span class="o">.</span><span class="n">expressions</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">node</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">"zone"</span><span class="p">):</span>
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</span><span id="L-39"><a href="#L-39"><span class="linenos"> 39</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">cast</span><span class="p">(</span><span class="n">node</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">to</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATE</span><span class="p">)</span>
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</span><span id="L-40"><a href="#L-40"><span class="linenos"> 40</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">Timestamp</span><span class="p">)</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">node</span><span class="o">.</span><span class="n">expression</span><span class="p">:</span>
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</span><span id="L-41"><a href="#L-41"><span class="linenos"> 41</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">cast</span><span class="p">(</span><span class="n">node</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">to</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMP</span><span class="p">)</span>
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</span><span id="L-42"><a href="#L-42"><span class="linenos"> 42</span></a> <span class="k">return</span> <span class="n">node</span>
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</span><span id="L-41"><a href="#L-41"><span class="linenos"> 41</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">node</span><span class="o">.</span><span class="n">type</span><span class="p">:</span>
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</span><span id="L-42"><a href="#L-42"><span class="linenos"> 42</span></a> <span class="kn">from</span> <span class="nn">sqlglot.optimizer.annotate_types</span> <span class="kn">import</span> <span class="n">annotate_types</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>
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</span><span id="L-45"><a href="#L-45"><span class="linenos"> 45</span></a><span class="n">COERCIBLE_DATE_OPS</span> <span class="o">=</span> <span class="p">(</span>
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</span><span id="L-46"><a href="#L-46"><span class="linenos"> 46</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Add</span><span class="p">,</span>
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</span><span id="L-47"><a href="#L-47"><span class="linenos"> 47</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Sub</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">exp</span><span class="o">.</span><span class="n">EQ</span><span class="p">,</span>
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</span><span id="L-49"><a href="#L-49"><span class="linenos"> 49</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">NEQ</span><span class="p">,</span>
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</span><span id="L-50"><a href="#L-50"><span class="linenos"> 50</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">GT</span><span class="p">,</span>
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</span><span id="L-51"><a href="#L-51"><span class="linenos"> 51</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">GTE</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="n">exp</span><span class="o">.</span><span class="n">LT</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="n">exp</span><span class="o">.</span><span class="n">LTE</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">exp</span><span class="o">.</span><span class="n">NullSafeEQ</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="n">exp</span><span class="o">.</span><span class="n">NullSafeNEQ</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="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>
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</span><span id="L-59"><a href="#L-59"><span class="linenos"> 59</span></a><span class="k">def</span> <span class="nf">coerce_type</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">Expression</span><span class="p">)</span> <span class="o">-></span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">:</span>
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</span><span id="L-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">COERCIBLE_DATE_OPS</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">_coerce_date</span><span class="p">(</span><span class="n">node</span><span class="o">.</span><span class="n">left</span><span class="p">,</span> <span class="n">node</span><span class="o">.</span><span class="n">right</span><span class="p">)</span>
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</span><span id="L-62"><a href="#L-62"><span class="linenos"> 62</span></a> <span class="k">elif</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">Between</span><span class="p">):</span>
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</span><span id="L-63"><a href="#L-63"><span class="linenos"> 63</span></a> <span class="n">_coerce_date</span><span class="p">(</span><span class="n">node</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">node</span><span class="o">.</span><span class="n">args</span><span class="p">[</span><span class="s2">"low"</span><span class="p">])</span>
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</span><span id="L-64"><a href="#L-64"><span class="linenos"> 64</span></a> <span class="k">elif</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">Extract</span><span class="p">)</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">node</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">type</span><span class="o">.</span><span class="n">is_type</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="o">*</span><span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">TEMPORAL_TYPES</span>
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</span><span id="L-66"><a href="#L-66"><span class="linenos"> 66</span></a> <span class="p">):</span>
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</span><span id="L-67"><a href="#L-67"><span class="linenos"> 67</span></a> <span class="n">_replace_cast</span><span class="p">(</span><span class="n">node</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATETIME</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="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">DateAdd</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DateSub</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DateTrunc</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">_coerce_timeunit_arg</span><span class="p">(</span><span class="n">node</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">node</span><span class="o">.</span><span class="n">unit</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="k">elif</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">DateDiff</span><span class="p">):</span>
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</span><span id="L-71"><a href="#L-71"><span class="linenos"> 71</span></a> <span class="n">_coerce_datediff_args</span><span class="p">(</span><span class="n">node</span><span class="p">)</span>
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</span><span id="L-72"><a href="#L-72"><span class="linenos"> 72</span></a>
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</span><span id="L-73"><a href="#L-73"><span class="linenos"> 73</span></a> <span class="k">return</span> <span class="n">node</span>
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</span><span id="L-74"><a href="#L-74"><span class="linenos"> 74</span></a>
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</span><span id="L-75"><a href="#L-75"><span class="linenos"> 75</span></a>
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</span><span id="L-76"><a href="#L-76"><span class="linenos"> 76</span></a><span class="k">def</span> <span class="nf">remove_redundant_casts</span><span class="p">(</span><span class="n">expression</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">)</span> <span class="o">-></span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">:</span>
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</span><span id="L-77"><a href="#L-77"><span class="linenos"> 77</span></a> <span class="k">if</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="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">Cast</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="ow">and</span> <span class="n">expression</span><span class="o">.</span><span class="n">to</span><span class="o">.</span><span class="n">type</span>
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</span><span id="L-80"><a href="#L-80"><span class="linenos"> 80</span></a> <span class="ow">and</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">type</span>
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</span><span id="L-81"><a href="#L-81"><span class="linenos"> 81</span></a> <span class="ow">and</span> <span class="n">expression</span><span class="o">.</span><span class="n">to</span><span class="o">.</span><span class="n">type</span><span class="o">.</span><span class="n">this</span> <span class="o">==</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">type</span><span class="o">.</span><span class="n">this</span>
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</span><span id="L-82"><a href="#L-82"><span class="linenos"> 82</span></a> <span class="p">):</span>
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</span><span id="L-83"><a href="#L-83"><span class="linenos"> 83</span></a> <span class="k">return</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span>
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</span><span id="L-84"><a href="#L-84"><span class="linenos"> 84</span></a> <span class="k">return</span> <span class="n">expression</span>
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</span><span id="L-85"><a href="#L-85"><span class="linenos"> 85</span></a>
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</span><span id="L-86"><a href="#L-86"><span class="linenos"> 86</span></a>
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</span><span id="L-87"><a href="#L-87"><span class="linenos"> 87</span></a><span class="k">def</span> <span class="nf">ensure_bools</span><span class="p">(</span>
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</span><span id="L-88"><a href="#L-88"><span class="linenos"> 88</span></a> <span class="n">expression</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">,</span> <span class="n">replace_func</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Callable</span><span class="p">[[</span><span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">],</span> <span class="kc">None</span><span class="p">]</span>
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</span><span id="L-89"><a href="#L-89"><span class="linenos"> 89</span></a><span class="p">)</span> <span class="o">-></span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">:</span>
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</span><span id="L-90"><a href="#L-90"><span class="linenos"> 90</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">):</span>
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</span><span id="L-91"><a href="#L-91"><span class="linenos"> 91</span></a> <span class="n">replace_func</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">left</span><span class="p">)</span>
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</span><span id="L-92"><a href="#L-92"><span class="linenos"> 92</span></a> <span class="n">replace_func</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">right</span><span class="p">)</span>
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</span><span id="L-93"><a href="#L-93"><span class="linenos"> 93</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Not</span><span class="p">):</span>
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</span><span id="L-94"><a href="#L-94"><span class="linenos"> 94</span></a> <span class="n">replace_func</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">)</span>
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</span><span id="L-95"><a href="#L-95"><span class="linenos"> 95</span></a> <span class="c1"># We can't replace num in CASE x WHEN num ..., because it's not the full predicate</span>
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</span><span id="L-96"><a href="#L-96"><span class="linenos"> 96</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">If</span><span class="p">)</span> <span class="ow">and</span> <span class="ow">not</span> <span class="p">(</span>
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</span><span id="L-97"><a href="#L-97"><span class="linenos"> 97</span></a> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">parent</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Case</span><span class="p">)</span> <span class="ow">and</span> <span class="n">expression</span><span class="o">.</span><span class="n">parent</span><span class="o">.</span><span class="n">this</span>
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</span><span id="L-98"><a href="#L-98"><span class="linenos"> 98</span></a> <span class="p">):</span>
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</span><span id="L-99"><a href="#L-99"><span class="linenos"> 99</span></a> <span class="n">replace_func</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">)</span>
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</span><span id="L-100"><a href="#L-100"><span class="linenos">100</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Where</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Having</span><span class="p">)):</span>
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</span><span id="L-101"><a href="#L-101"><span class="linenos">101</span></a> <span class="n">replace_func</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">)</span>
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</span><span id="L-102"><a href="#L-102"><span class="linenos">102</span></a>
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</span><span id="L-103"><a href="#L-103"><span class="linenos">103</span></a> <span class="k">return</span> <span class="n">expression</span>
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</span><span id="L-104"><a href="#L-104"><span class="linenos">104</span></a>
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</span><span id="L-105"><a href="#L-105"><span class="linenos">105</span></a>
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</span><span id="L-106"><a href="#L-106"><span class="linenos">106</span></a><span class="k">def</span> <span class="nf">remove_ascending_order</span><span class="p">(</span><span class="n">expression</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">)</span> <span class="o">-></span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">:</span>
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</span><span id="L-107"><a href="#L-107"><span class="linenos">107</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Ordered</span><span class="p">)</span> <span class="ow">and</span> <span class="n">expression</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">"desc"</span><span class="p">)</span> <span class="ow">is</span> <span class="kc">False</span><span class="p">:</span>
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</span><span id="L-108"><a href="#L-108"><span class="linenos">108</span></a> <span class="c1"># Convert ORDER BY a ASC to ORDER BY a</span>
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</span><span id="L-109"><a href="#L-109"><span class="linenos">109</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"desc"</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span>
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</span><span id="L-110"><a href="#L-110"><span class="linenos">110</span></a>
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</span><span id="L-111"><a href="#L-111"><span class="linenos">111</span></a> <span class="k">return</span> <span class="n">expression</span>
|
||||
</span><span id="L-112"><a href="#L-112"><span class="linenos">112</span></a>
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</span><span id="L-113"><a href="#L-113"><span class="linenos">113</span></a>
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</span><span id="L-114"><a href="#L-114"><span class="linenos">114</span></a><span class="k">def</span> <span class="nf">_coerce_date</span><span class="p">(</span><span class="n">a</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">,</span> <span class="n">b</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">)</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span>
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||||
</span><span id="L-115"><a href="#L-115"><span class="linenos">115</span></a> <span class="k">for</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">permutations</span><span class="p">([</span><span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">]):</span>
|
||||
</span><span id="L-116"><a href="#L-116"><span class="linenos">116</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Interval</span><span class="p">):</span>
|
||||
</span><span id="L-117"><a href="#L-117"><span class="linenos">117</span></a> <span class="n">a</span> <span class="o">=</span> <span class="n">_coerce_timeunit_arg</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="o">.</span><span class="n">unit</span><span class="p">)</span>
|
||||
</span><span id="L-118"><a href="#L-118"><span class="linenos">118</span></a> <span class="k">if</span> <span class="p">(</span>
|
||||
</span><span id="L-119"><a href="#L-119"><span class="linenos">119</span></a> <span class="n">a</span><span class="o">.</span><span class="n">type</span>
|
||||
</span><span id="L-120"><a href="#L-120"><span class="linenos">120</span></a> <span class="ow">and</span> <span class="n">a</span><span class="o">.</span><span class="n">type</span><span class="o">.</span><span class="n">this</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATE</span>
|
||||
</span><span id="L-121"><a href="#L-121"><span class="linenos">121</span></a> <span class="ow">and</span> <span class="n">b</span><span class="o">.</span><span class="n">type</span>
|
||||
</span><span id="L-122"><a href="#L-122"><span class="linenos">122</span></a> <span class="ow">and</span> <span class="n">b</span><span class="o">.</span><span class="n">type</span><span class="o">.</span><span class="n">this</span>
|
||||
</span><span id="L-123"><a href="#L-123"><span class="linenos">123</span></a> <span class="ow">not</span> <span class="ow">in</span> <span class="p">(</span>
|
||||
</span><span id="L-124"><a href="#L-124"><span class="linenos">124</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATE</span><span class="p">,</span>
|
||||
</span><span id="L-125"><a href="#L-125"><span class="linenos">125</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">INTERVAL</span><span class="p">,</span>
|
||||
</span><span id="L-126"><a href="#L-126"><span class="linenos">126</span></a> <span class="p">)</span>
|
||||
</span><span id="L-127"><a href="#L-127"><span class="linenos">127</span></a> <span class="p">):</span>
|
||||
</span><span id="L-128"><a href="#L-128"><span class="linenos">128</span></a> <span class="n">_replace_cast</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATE</span><span class="p">)</span>
|
||||
</span><span id="L-129"><a href="#L-129"><span class="linenos">129</span></a>
|
||||
</span><span id="L-130"><a href="#L-130"><span class="linenos">130</span></a>
|
||||
</span><span id="L-131"><a href="#L-131"><span class="linenos">131</span></a><span class="k">def</span> <span class="nf">_coerce_timeunit_arg</span><span class="p">(</span><span class="n">arg</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">,</span> <span class="n">unit</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">])</span> <span class="o">-></span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">:</span>
|
||||
</span><span id="L-132"><a href="#L-132"><span class="linenos">132</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">arg</span><span class="o">.</span><span class="n">type</span><span class="p">:</span>
|
||||
</span><span id="L-133"><a href="#L-133"><span class="linenos">133</span></a> <span class="k">return</span> <span class="n">arg</span>
|
||||
</span><span id="L-44"><a href="#L-44"><span class="linenos"> 44</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">annotate_types</span><span class="p">(</span><span class="n">node</span><span class="p">)</span>
|
||||
</span><span id="L-45"><a href="#L-45"><span class="linenos"> 45</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">cast</span><span class="p">(</span><span class="n">node</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">to</span><span class="o">=</span><span class="n">node</span><span class="o">.</span><span class="n">type</span> <span class="ow">or</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMP</span><span class="p">)</span>
|
||||
</span><span id="L-46"><a href="#L-46"><span class="linenos"> 46</span></a>
|
||||
</span><span id="L-47"><a href="#L-47"><span class="linenos"> 47</span></a> <span class="k">return</span> <span class="n">node</span>
|
||||
</span><span id="L-48"><a href="#L-48"><span class="linenos"> 48</span></a>
|
||||
</span><span id="L-49"><a href="#L-49"><span class="linenos"> 49</span></a>
|
||||
</span><span id="L-50"><a href="#L-50"><span class="linenos"> 50</span></a><span class="n">COERCIBLE_DATE_OPS</span> <span class="o">=</span> <span class="p">(</span>
|
||||
</span><span id="L-51"><a href="#L-51"><span class="linenos"> 51</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Add</span><span class="p">,</span>
|
||||
</span><span id="L-52"><a href="#L-52"><span class="linenos"> 52</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Sub</span><span class="p">,</span>
|
||||
</span><span id="L-53"><a href="#L-53"><span class="linenos"> 53</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">EQ</span><span class="p">,</span>
|
||||
</span><span id="L-54"><a href="#L-54"><span class="linenos"> 54</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">NEQ</span><span class="p">,</span>
|
||||
</span><span id="L-55"><a href="#L-55"><span class="linenos"> 55</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">GT</span><span class="p">,</span>
|
||||
</span><span id="L-56"><a href="#L-56"><span class="linenos"> 56</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">GTE</span><span class="p">,</span>
|
||||
</span><span id="L-57"><a href="#L-57"><span class="linenos"> 57</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">LT</span><span class="p">,</span>
|
||||
</span><span id="L-58"><a href="#L-58"><span class="linenos"> 58</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">LTE</span><span class="p">,</span>
|
||||
</span><span id="L-59"><a href="#L-59"><span class="linenos"> 59</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">NullSafeEQ</span><span class="p">,</span>
|
||||
</span><span id="L-60"><a href="#L-60"><span class="linenos"> 60</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">NullSafeNEQ</span><span class="p">,</span>
|
||||
</span><span id="L-61"><a href="#L-61"><span class="linenos"> 61</span></a><span class="p">)</span>
|
||||
</span><span id="L-62"><a href="#L-62"><span class="linenos"> 62</span></a>
|
||||
</span><span id="L-63"><a href="#L-63"><span class="linenos"> 63</span></a>
|
||||
</span><span id="L-64"><a href="#L-64"><span class="linenos"> 64</span></a><span class="k">def</span> <span class="nf">coerce_type</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">Expression</span><span class="p">)</span> <span class="o">-></span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">:</span>
|
||||
</span><span id="L-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">node</span><span class="p">,</span> <span class="n">COERCIBLE_DATE_OPS</span><span class="p">):</span>
|
||||
</span><span id="L-66"><a href="#L-66"><span class="linenos"> 66</span></a> <span class="n">_coerce_date</span><span class="p">(</span><span class="n">node</span><span class="o">.</span><span class="n">left</span><span class="p">,</span> <span class="n">node</span><span class="o">.</span><span class="n">right</span><span class="p">)</span>
|
||||
</span><span id="L-67"><a href="#L-67"><span class="linenos"> 67</span></a> <span class="k">elif</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">Between</span><span class="p">):</span>
|
||||
</span><span id="L-68"><a href="#L-68"><span class="linenos"> 68</span></a> <span class="n">_coerce_date</span><span class="p">(</span><span class="n">node</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">node</span><span class="o">.</span><span class="n">args</span><span class="p">[</span><span class="s2">"low"</span><span class="p">])</span>
|
||||
</span><span id="L-69"><a href="#L-69"><span class="linenos"> 69</span></a> <span class="k">elif</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">Extract</span><span class="p">)</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">node</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">type</span><span class="o">.</span><span class="n">is_type</span><span class="p">(</span>
|
||||
</span><span id="L-70"><a href="#L-70"><span class="linenos"> 70</span></a> <span class="o">*</span><span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">TEMPORAL_TYPES</span>
|
||||
</span><span id="L-71"><a href="#L-71"><span class="linenos"> 71</span></a> <span class="p">):</span>
|
||||
</span><span id="L-72"><a href="#L-72"><span class="linenos"> 72</span></a> <span class="n">_replace_cast</span><span class="p">(</span><span class="n">node</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATETIME</span><span class="p">)</span>
|
||||
</span><span id="L-73"><a href="#L-73"><span class="linenos"> 73</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">DateAdd</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DateSub</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DateTrunc</span><span class="p">)):</span>
|
||||
</span><span id="L-74"><a href="#L-74"><span class="linenos"> 74</span></a> <span class="n">_coerce_timeunit_arg</span><span class="p">(</span><span class="n">node</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">node</span><span class="o">.</span><span class="n">unit</span><span class="p">)</span>
|
||||
</span><span id="L-75"><a href="#L-75"><span class="linenos"> 75</span></a> <span class="k">elif</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">DateDiff</span><span class="p">):</span>
|
||||
</span><span id="L-76"><a href="#L-76"><span class="linenos"> 76</span></a> <span class="n">_coerce_datediff_args</span><span class="p">(</span><span class="n">node</span><span class="p">)</span>
|
||||
</span><span id="L-77"><a href="#L-77"><span class="linenos"> 77</span></a>
|
||||
</span><span id="L-78"><a href="#L-78"><span class="linenos"> 78</span></a> <span class="k">return</span> <span class="n">node</span>
|
||||
</span><span id="L-79"><a href="#L-79"><span class="linenos"> 79</span></a>
|
||||
</span><span id="L-80"><a href="#L-80"><span class="linenos"> 80</span></a>
|
||||
</span><span id="L-81"><a href="#L-81"><span class="linenos"> 81</span></a><span class="k">def</span> <span class="nf">remove_redundant_casts</span><span class="p">(</span><span class="n">expression</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">)</span> <span class="o">-></span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">:</span>
|
||||
</span><span id="L-82"><a href="#L-82"><span class="linenos"> 82</span></a> <span class="k">if</span> <span class="p">(</span>
|
||||
</span><span id="L-83"><a href="#L-83"><span class="linenos"> 83</span></a> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Cast</span><span class="p">)</span>
|
||||
</span><span id="L-84"><a href="#L-84"><span class="linenos"> 84</span></a> <span class="ow">and</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">type</span>
|
||||
</span><span id="L-85"><a href="#L-85"><span class="linenos"> 85</span></a> <span class="ow">and</span> <span class="n">expression</span><span class="o">.</span><span class="n">to</span><span class="o">.</span><span class="n">this</span> <span class="o">==</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">type</span><span class="o">.</span><span class="n">this</span>
|
||||
</span><span id="L-86"><a href="#L-86"><span class="linenos"> 86</span></a> <span class="p">):</span>
|
||||
</span><span id="L-87"><a href="#L-87"><span class="linenos"> 87</span></a> <span class="k">return</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span>
|
||||
</span><span id="L-88"><a href="#L-88"><span class="linenos"> 88</span></a> <span class="k">return</span> <span class="n">expression</span>
|
||||
</span><span id="L-89"><a href="#L-89"><span class="linenos"> 89</span></a>
|
||||
</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="k">def</span> <span class="nf">ensure_bools</span><span class="p">(</span>
|
||||
</span><span id="L-92"><a href="#L-92"><span class="linenos"> 92</span></a> <span class="n">expression</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">,</span> <span class="n">replace_func</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Callable</span><span class="p">[[</span><span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">],</span> <span class="kc">None</span><span class="p">]</span>
|
||||
</span><span id="L-93"><a href="#L-93"><span class="linenos"> 93</span></a><span class="p">)</span> <span class="o">-></span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">:</span>
|
||||
</span><span id="L-94"><a href="#L-94"><span class="linenos"> 94</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">):</span>
|
||||
</span><span id="L-95"><a href="#L-95"><span class="linenos"> 95</span></a> <span class="n">replace_func</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">left</span><span class="p">)</span>
|
||||
</span><span id="L-96"><a href="#L-96"><span class="linenos"> 96</span></a> <span class="n">replace_func</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">right</span><span class="p">)</span>
|
||||
</span><span id="L-97"><a href="#L-97"><span class="linenos"> 97</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Not</span><span class="p">):</span>
|
||||
</span><span id="L-98"><a href="#L-98"><span class="linenos"> 98</span></a> <span class="n">replace_func</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">)</span>
|
||||
</span><span id="L-99"><a href="#L-99"><span class="linenos"> 99</span></a> <span class="c1"># We can't replace num in CASE x WHEN num ..., because it's not the full predicate</span>
|
||||
</span><span id="L-100"><a href="#L-100"><span class="linenos">100</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">If</span><span class="p">)</span> <span class="ow">and</span> <span class="ow">not</span> <span class="p">(</span>
|
||||
</span><span id="L-101"><a href="#L-101"><span class="linenos">101</span></a> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">parent</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Case</span><span class="p">)</span> <span class="ow">and</span> <span class="n">expression</span><span class="o">.</span><span class="n">parent</span><span class="o">.</span><span class="n">this</span>
|
||||
</span><span id="L-102"><a href="#L-102"><span class="linenos">102</span></a> <span class="p">):</span>
|
||||
</span><span id="L-103"><a href="#L-103"><span class="linenos">103</span></a> <span class="n">replace_func</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">)</span>
|
||||
</span><span id="L-104"><a href="#L-104"><span class="linenos">104</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Where</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Having</span><span class="p">)):</span>
|
||||
</span><span id="L-105"><a href="#L-105"><span class="linenos">105</span></a> <span class="n">replace_func</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">)</span>
|
||||
</span><span id="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">return</span> <span class="n">expression</span>
|
||||
</span><span id="L-108"><a href="#L-108"><span class="linenos">108</span></a>
|
||||
</span><span id="L-109"><a href="#L-109"><span class="linenos">109</span></a>
|
||||
</span><span id="L-110"><a href="#L-110"><span class="linenos">110</span></a><span class="k">def</span> <span class="nf">remove_ascending_order</span><span class="p">(</span><span class="n">expression</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">)</span> <span class="o">-></span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">:</span>
|
||||
</span><span id="L-111"><a href="#L-111"><span class="linenos">111</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Ordered</span><span class="p">)</span> <span class="ow">and</span> <span class="n">expression</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">"desc"</span><span class="p">)</span> <span class="ow">is</span> <span class="kc">False</span><span class="p">:</span>
|
||||
</span><span id="L-112"><a href="#L-112"><span class="linenos">112</span></a> <span class="c1"># Convert ORDER BY a ASC to ORDER BY a</span>
|
||||
</span><span id="L-113"><a href="#L-113"><span class="linenos">113</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"desc"</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span>
|
||||
</span><span id="L-114"><a href="#L-114"><span class="linenos">114</span></a>
|
||||
</span><span id="L-115"><a href="#L-115"><span class="linenos">115</span></a> <span class="k">return</span> <span class="n">expression</span>
|
||||
</span><span id="L-116"><a href="#L-116"><span class="linenos">116</span></a>
|
||||
</span><span id="L-117"><a href="#L-117"><span class="linenos">117</span></a>
|
||||
</span><span id="L-118"><a href="#L-118"><span class="linenos">118</span></a><span class="k">def</span> <span class="nf">_coerce_date</span><span class="p">(</span><span class="n">a</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">,</span> <span class="n">b</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">)</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span>
|
||||
</span><span id="L-119"><a href="#L-119"><span class="linenos">119</span></a> <span class="k">for</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">permutations</span><span class="p">([</span><span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">]):</span>
|
||||
</span><span id="L-120"><a href="#L-120"><span class="linenos">120</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Interval</span><span class="p">):</span>
|
||||
</span><span id="L-121"><a href="#L-121"><span class="linenos">121</span></a> <span class="n">a</span> <span class="o">=</span> <span class="n">_coerce_timeunit_arg</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="o">.</span><span class="n">unit</span><span class="p">)</span>
|
||||
</span><span id="L-122"><a href="#L-122"><span class="linenos">122</span></a> <span class="k">if</span> <span class="p">(</span>
|
||||
</span><span id="L-123"><a href="#L-123"><span class="linenos">123</span></a> <span class="n">a</span><span class="o">.</span><span class="n">type</span>
|
||||
</span><span id="L-124"><a href="#L-124"><span class="linenos">124</span></a> <span class="ow">and</span> <span class="n">a</span><span class="o">.</span><span class="n">type</span><span class="o">.</span><span class="n">this</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATE</span>
|
||||
</span><span id="L-125"><a href="#L-125"><span class="linenos">125</span></a> <span class="ow">and</span> <span class="n">b</span><span class="o">.</span><span class="n">type</span>
|
||||
</span><span id="L-126"><a href="#L-126"><span class="linenos">126</span></a> <span class="ow">and</span> <span class="n">b</span><span class="o">.</span><span class="n">type</span><span class="o">.</span><span class="n">this</span>
|
||||
</span><span id="L-127"><a href="#L-127"><span class="linenos">127</span></a> <span class="ow">not</span> <span class="ow">in</span> <span class="p">(</span>
|
||||
</span><span id="L-128"><a href="#L-128"><span class="linenos">128</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATE</span><span class="p">,</span>
|
||||
</span><span id="L-129"><a href="#L-129"><span class="linenos">129</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">INTERVAL</span><span class="p">,</span>
|
||||
</span><span id="L-130"><a href="#L-130"><span class="linenos">130</span></a> <span class="p">)</span>
|
||||
</span><span id="L-131"><a href="#L-131"><span class="linenos">131</span></a> <span class="p">):</span>
|
||||
</span><span id="L-132"><a href="#L-132"><span class="linenos">132</span></a> <span class="n">_replace_cast</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATE</span><span class="p">)</span>
|
||||
</span><span id="L-133"><a href="#L-133"><span class="linenos">133</span></a>
|
||||
</span><span id="L-134"><a href="#L-134"><span class="linenos">134</span></a>
|
||||
</span><span id="L-135"><a href="#L-135"><span class="linenos">135</span></a> <span class="k">if</span> <span class="n">arg</span><span class="o">.</span><span class="n">type</span><span class="o">.</span><span class="n">this</span> <span class="ow">in</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">TEXT_TYPES</span><span class="p">:</span>
|
||||
</span><span id="L-136"><a href="#L-136"><span class="linenos">136</span></a> <span class="n">date_text</span> <span class="o">=</span> <span class="n">arg</span><span class="o">.</span><span class="n">name</span>
|
||||
</span><span id="L-137"><a href="#L-137"><span class="linenos">137</span></a> <span class="n">is_iso_date_</span> <span class="o">=</span> <span class="n">is_iso_date</span><span class="p">(</span><span class="n">date_text</span><span class="p">)</span>
|
||||
</span><span id="L-135"><a href="#L-135"><span class="linenos">135</span></a><span class="k">def</span> <span class="nf">_coerce_timeunit_arg</span><span class="p">(</span><span class="n">arg</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">,</span> <span class="n">unit</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">])</span> <span class="o">-></span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">:</span>
|
||||
</span><span id="L-136"><a href="#L-136"><span class="linenos">136</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">arg</span><span class="o">.</span><span class="n">type</span><span class="p">:</span>
|
||||
</span><span id="L-137"><a href="#L-137"><span class="linenos">137</span></a> <span class="k">return</span> <span class="n">arg</span>
|
||||
</span><span id="L-138"><a href="#L-138"><span class="linenos">138</span></a>
|
||||
</span><span id="L-139"><a href="#L-139"><span class="linenos">139</span></a> <span class="k">if</span> <span class="n">is_iso_date_</span> <span class="ow">and</span> <span class="n">is_date_unit</span><span class="p">(</span><span class="n">unit</span><span class="p">):</span>
|
||||
</span><span id="L-140"><a href="#L-140"><span class="linenos">140</span></a> <span class="k">return</span> <span class="n">arg</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">cast</span><span class="p">(</span><span class="n">arg</span><span class="o">.</span><span class="n">copy</span><span class="p">(),</span> <span class="n">to</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATE</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="c1"># An ISO date is also an ISO datetime, but not vice versa</span>
|
||||
</span><span id="L-143"><a href="#L-143"><span class="linenos">143</span></a> <span class="k">if</span> <span class="n">is_iso_date_</span> <span class="ow">or</span> <span class="n">is_iso_datetime</span><span class="p">(</span><span class="n">date_text</span><span class="p">):</span>
|
||||
</span><span id="L-144"><a href="#L-144"><span class="linenos">144</span></a> <span class="k">return</span> <span class="n">arg</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">cast</span><span class="p">(</span><span class="n">arg</span><span class="o">.</span><span class="n">copy</span><span class="p">(),</span> <span class="n">to</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATETIME</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">arg</span><span class="o">.</span><span class="n">type</span><span class="o">.</span><span class="n">this</span> <span class="ow">in</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">TEXT_TYPES</span><span class="p">:</span>
|
||||
</span><span id="L-140"><a href="#L-140"><span class="linenos">140</span></a> <span class="n">date_text</span> <span class="o">=</span> <span class="n">arg</span><span class="o">.</span><span class="n">name</span>
|
||||
</span><span id="L-141"><a href="#L-141"><span class="linenos">141</span></a> <span class="n">is_iso_date_</span> <span class="o">=</span> <span class="n">is_iso_date</span><span class="p">(</span><span class="n">date_text</span><span class="p">)</span>
|
||||
</span><span id="L-142"><a href="#L-142"><span class="linenos">142</span></a>
|
||||
</span><span id="L-143"><a href="#L-143"><span class="linenos">143</span></a> <span class="k">if</span> <span class="n">is_iso_date_</span> <span class="ow">and</span> <span class="n">is_date_unit</span><span class="p">(</span><span class="n">unit</span><span class="p">):</span>
|
||||
</span><span id="L-144"><a href="#L-144"><span class="linenos">144</span></a> <span class="k">return</span> <span class="n">arg</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">cast</span><span class="p">(</span><span class="n">arg</span><span class="o">.</span><span class="n">copy</span><span class="p">(),</span> <span class="n">to</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATE</span><span class="p">))</span>
|
||||
</span><span id="L-145"><a href="#L-145"><span class="linenos">145</span></a>
|
||||
</span><span id="L-146"><a href="#L-146"><span class="linenos">146</span></a> <span class="k">elif</span> <span class="n">arg</span><span class="o">.</span><span class="n">type</span><span class="o">.</span><span class="n">this</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATE</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">is_date_unit</span><span class="p">(</span><span class="n">unit</span><span class="p">):</span>
|
||||
</span><span id="L-147"><a href="#L-147"><span class="linenos">147</span></a> <span class="k">return</span> <span class="n">arg</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">cast</span><span class="p">(</span><span class="n">arg</span><span class="o">.</span><span class="n">copy</span><span class="p">(),</span> <span class="n">to</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATETIME</span><span class="p">))</span>
|
||||
</span><span id="L-148"><a href="#L-148"><span class="linenos">148</span></a>
|
||||
</span><span id="L-149"><a href="#L-149"><span class="linenos">149</span></a> <span class="k">return</span> <span class="n">arg</span>
|
||||
</span><span id="L-150"><a href="#L-150"><span class="linenos">150</span></a>
|
||||
</span><span id="L-151"><a href="#L-151"><span class="linenos">151</span></a>
|
||||
</span><span id="L-152"><a href="#L-152"><span class="linenos">152</span></a><span class="k">def</span> <span class="nf">_coerce_datediff_args</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">DateDiff</span><span class="p">)</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span>
|
||||
</span><span id="L-153"><a href="#L-153"><span class="linenos">153</span></a> <span class="k">for</span> <span class="n">e</span> <span class="ow">in</span> <span class="p">(</span><span class="n">node</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">node</span><span class="o">.</span><span class="n">expression</span><span class="p">):</span>
|
||||
</span><span id="L-154"><a href="#L-154"><span class="linenos">154</span></a> <span class="k">if</span> <span class="n">e</span><span class="o">.</span><span class="n">type</span><span class="o">.</span><span class="n">this</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">TEMPORAL_TYPES</span><span class="p">:</span>
|
||||
</span><span id="L-155"><a href="#L-155"><span class="linenos">155</span></a> <span class="n">e</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">cast</span><span class="p">(</span><span class="n">e</span><span class="o">.</span><span class="n">copy</span><span class="p">(),</span> <span class="n">to</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATETIME</span><span class="p">))</span>
|
||||
</span><span id="L-156"><a href="#L-156"><span class="linenos">156</span></a>
|
||||
</span><span id="L-157"><a href="#L-157"><span class="linenos">157</span></a>
|
||||
</span><span id="L-158"><a href="#L-158"><span class="linenos">158</span></a><span class="k">def</span> <span class="nf">_replace_cast</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">Expression</span><span class="p">,</span> <span class="n">to</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="p">)</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span>
|
||||
</span><span id="L-159"><a href="#L-159"><span class="linenos">159</span></a> <span class="n">node</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">cast</span><span class="p">(</span><span class="n">node</span><span class="o">.</span><span class="n">copy</span><span class="p">(),</span> <span class="n">to</span><span class="o">=</span><span class="n">to</span><span class="p">))</span>
|
||||
</span><span id="L-146"><a href="#L-146"><span class="linenos">146</span></a> <span class="c1"># An ISO date is also an ISO datetime, but not vice versa</span>
|
||||
</span><span id="L-147"><a href="#L-147"><span class="linenos">147</span></a> <span class="k">if</span> <span class="n">is_iso_date_</span> <span class="ow">or</span> <span class="n">is_iso_datetime</span><span class="p">(</span><span class="n">date_text</span><span class="p">):</span>
|
||||
</span><span id="L-148"><a href="#L-148"><span class="linenos">148</span></a> <span class="k">return</span> <span class="n">arg</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">cast</span><span class="p">(</span><span class="n">arg</span><span class="o">.</span><span class="n">copy</span><span class="p">(),</span> <span class="n">to</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATETIME</span><span class="p">))</span>
|
||||
</span><span id="L-149"><a href="#L-149"><span class="linenos">149</span></a>
|
||||
</span><span id="L-150"><a href="#L-150"><span class="linenos">150</span></a> <span class="k">elif</span> <span class="n">arg</span><span class="o">.</span><span class="n">type</span><span class="o">.</span><span class="n">this</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATE</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">is_date_unit</span><span class="p">(</span><span class="n">unit</span><span class="p">):</span>
|
||||
</span><span id="L-151"><a href="#L-151"><span class="linenos">151</span></a> <span class="k">return</span> <span class="n">arg</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">cast</span><span class="p">(</span><span class="n">arg</span><span class="o">.</span><span class="n">copy</span><span class="p">(),</span> <span class="n">to</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATETIME</span><span class="p">))</span>
|
||||
</span><span id="L-152"><a href="#L-152"><span class="linenos">152</span></a>
|
||||
</span><span id="L-153"><a href="#L-153"><span class="linenos">153</span></a> <span class="k">return</span> <span class="n">arg</span>
|
||||
</span><span id="L-154"><a href="#L-154"><span class="linenos">154</span></a>
|
||||
</span><span id="L-155"><a href="#L-155"><span class="linenos">155</span></a>
|
||||
</span><span id="L-156"><a href="#L-156"><span class="linenos">156</span></a><span class="k">def</span> <span class="nf">_coerce_datediff_args</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">DateDiff</span><span class="p">)</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span>
|
||||
</span><span id="L-157"><a href="#L-157"><span class="linenos">157</span></a> <span class="k">for</span> <span class="n">e</span> <span class="ow">in</span> <span class="p">(</span><span class="n">node</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">node</span><span class="o">.</span><span class="n">expression</span><span class="p">):</span>
|
||||
</span><span id="L-158"><a href="#L-158"><span class="linenos">158</span></a> <span class="k">if</span> <span class="n">e</span><span class="o">.</span><span class="n">type</span><span class="o">.</span><span class="n">this</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">TEMPORAL_TYPES</span><span class="p">:</span>
|
||||
</span><span id="L-159"><a href="#L-159"><span class="linenos">159</span></a> <span class="n">e</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">cast</span><span class="p">(</span><span class="n">e</span><span class="o">.</span><span class="n">copy</span><span class="p">(),</span> <span class="n">to</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATETIME</span><span class="p">))</span>
|
||||
</span><span id="L-160"><a href="#L-160"><span class="linenos">160</span></a>
|
||||
</span><span id="L-161"><a href="#L-161"><span class="linenos">161</span></a>
|
||||
</span><span id="L-162"><a href="#L-162"><span class="linenos">162</span></a><span class="c1"># this was originally designed for presto, there is a similar transform for tsql</span>
|
||||
</span><span id="L-163"><a href="#L-163"><span class="linenos">163</span></a><span class="c1"># this is different in that it only operates on int types, this is because</span>
|
||||
</span><span id="L-164"><a href="#L-164"><span class="linenos">164</span></a><span class="c1"># presto has a boolean type whereas tsql doesn't (people use bits)</span>
|
||||
</span><span id="L-165"><a href="#L-165"><span class="linenos">165</span></a><span class="c1"># with y as (select true as x) select x = 0 FROM y -- illegal presto query</span>
|
||||
</span><span id="L-166"><a href="#L-166"><span class="linenos">166</span></a><span class="k">def</span> <span class="nf">_replace_int_predicate</span><span class="p">(</span><span class="n">expression</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">)</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span>
|
||||
</span><span id="L-167"><a href="#L-167"><span class="linenos">167</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Coalesce</span><span class="p">):</span>
|
||||
</span><span id="L-168"><a href="#L-168"><span class="linenos">168</span></a> <span class="k">for</span> <span class="n">_</span><span class="p">,</span> <span class="n">child</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">iter_expressions</span><span class="p">():</span>
|
||||
</span><span id="L-169"><a href="#L-169"><span class="linenos">169</span></a> <span class="n">_replace_int_predicate</span><span class="p">(</span><span class="n">child</span><span class="p">)</span>
|
||||
</span><span id="L-170"><a href="#L-170"><span class="linenos">170</span></a> <span class="k">elif</span> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="ow">and</span> <span class="n">expression</span><span class="o">.</span><span class="n">type</span><span class="o">.</span><span class="n">this</span> <span class="ow">in</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">INTEGER_TYPES</span><span class="p">:</span>
|
||||
</span><span id="L-171"><a href="#L-171"><span class="linenos">171</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">neq</span><span class="p">(</span><span class="mi">0</span><span class="p">))</span>
|
||||
</span><span id="L-162"><a href="#L-162"><span class="linenos">162</span></a><span class="k">def</span> <span class="nf">_replace_cast</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">Expression</span><span class="p">,</span> <span class="n">to</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="p">)</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span>
|
||||
</span><span id="L-163"><a href="#L-163"><span class="linenos">163</span></a> <span class="n">node</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">cast</span><span class="p">(</span><span class="n">node</span><span class="o">.</span><span class="n">copy</span><span class="p">(),</span> <span class="n">to</span><span class="o">=</span><span class="n">to</span><span class="p">))</span>
|
||||
</span><span id="L-164"><a href="#L-164"><span class="linenos">164</span></a>
|
||||
</span><span id="L-165"><a href="#L-165"><span class="linenos">165</span></a>
|
||||
</span><span id="L-166"><a href="#L-166"><span class="linenos">166</span></a><span class="c1"># this was originally designed for presto, there is a similar transform for tsql</span>
|
||||
</span><span id="L-167"><a href="#L-167"><span class="linenos">167</span></a><span class="c1"># this is different in that it only operates on int types, this is because</span>
|
||||
</span><span id="L-168"><a href="#L-168"><span class="linenos">168</span></a><span class="c1"># presto has a boolean type whereas tsql doesn't (people use bits)</span>
|
||||
</span><span id="L-169"><a href="#L-169"><span class="linenos">169</span></a><span class="c1"># with y as (select true as x) select x = 0 FROM y -- illegal presto query</span>
|
||||
</span><span id="L-170"><a href="#L-170"><span class="linenos">170</span></a><span class="k">def</span> <span class="nf">_replace_int_predicate</span><span class="p">(</span><span class="n">expression</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">)</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span>
|
||||
</span><span id="L-171"><a href="#L-171"><span class="linenos">171</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Coalesce</span><span class="p">):</span>
|
||||
</span><span id="L-172"><a href="#L-172"><span class="linenos">172</span></a> <span class="k">for</span> <span class="n">_</span><span class="p">,</span> <span class="n">child</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">iter_expressions</span><span class="p">():</span>
|
||||
</span><span id="L-173"><a href="#L-173"><span class="linenos">173</span></a> <span class="n">_replace_int_predicate</span><span class="p">(</span><span class="n">child</span><span class="p">)</span>
|
||||
</span><span id="L-174"><a href="#L-174"><span class="linenos">174</span></a> <span class="k">elif</span> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="ow">and</span> <span class="n">expression</span><span class="o">.</span><span class="n">type</span><span class="o">.</span><span class="n">this</span> <span class="ow">in</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">INTEGER_TYPES</span><span class="p">:</span>
|
||||
</span><span id="L-175"><a href="#L-175"><span class="linenos">175</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">neq</span><span class="p">(</span><span class="mi">0</span><span class="p">))</span>
|
||||
</span></pre></div>
|
||||
|
||||
|
||||
|
|
@ -335,8 +339,13 @@ conversions rely on type inference.</p>
|
|||
</span><span id="replace_date_funcs-39"><a href="#replace_date_funcs-39"><span class="linenos">39</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">Date</span><span class="p">)</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">node</span><span class="o">.</span><span class="n">expressions</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">node</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">"zone"</span><span class="p">):</span>
|
||||
</span><span id="replace_date_funcs-40"><a href="#replace_date_funcs-40"><span class="linenos">40</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">cast</span><span class="p">(</span><span class="n">node</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">to</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATE</span><span class="p">)</span>
|
||||
</span><span id="replace_date_funcs-41"><a href="#replace_date_funcs-41"><span class="linenos">41</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">Timestamp</span><span class="p">)</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">node</span><span class="o">.</span><span class="n">expression</span><span class="p">:</span>
|
||||
</span><span id="replace_date_funcs-42"><a href="#replace_date_funcs-42"><span class="linenos">42</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">cast</span><span class="p">(</span><span class="n">node</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">to</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMP</span><span class="p">)</span>
|
||||
</span><span id="replace_date_funcs-43"><a href="#replace_date_funcs-43"><span class="linenos">43</span></a> <span class="k">return</span> <span class="n">node</span>
|
||||
</span><span id="replace_date_funcs-42"><a href="#replace_date_funcs-42"><span class="linenos">42</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">node</span><span class="o">.</span><span class="n">type</span><span class="p">:</span>
|
||||
</span><span id="replace_date_funcs-43"><a href="#replace_date_funcs-43"><span class="linenos">43</span></a> <span class="kn">from</span> <span class="nn">sqlglot.optimizer.annotate_types</span> <span class="kn">import</span> <span class="n">annotate_types</span>
|
||||
</span><span id="replace_date_funcs-44"><a href="#replace_date_funcs-44"><span class="linenos">44</span></a>
|
||||
</span><span id="replace_date_funcs-45"><a href="#replace_date_funcs-45"><span class="linenos">45</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">annotate_types</span><span class="p">(</span><span class="n">node</span><span class="p">)</span>
|
||||
</span><span id="replace_date_funcs-46"><a href="#replace_date_funcs-46"><span class="linenos">46</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">cast</span><span class="p">(</span><span class="n">node</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">to</span><span class="o">=</span><span class="n">node</span><span class="o">.</span><span class="n">type</span> <span class="ow">or</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMP</span><span class="p">)</span>
|
||||
</span><span id="replace_date_funcs-47"><a href="#replace_date_funcs-47"><span class="linenos">47</span></a>
|
||||
</span><span id="replace_date_funcs-48"><a href="#replace_date_funcs-48"><span class="linenos">48</span></a> <span class="k">return</span> <span class="n">node</span>
|
||||
</span></pre></div>
|
||||
|
||||
|
||||
|
|
@ -367,21 +376,21 @@ conversions rely on type inference.</p>
|
|||
|
||||
</div>
|
||||
<a class="headerlink" href="#coerce_type"></a>
|
||||
<div class="pdoc-code codehilite"><pre><span></span><span id="coerce_type-60"><a href="#coerce_type-60"><span class="linenos">60</span></a><span class="k">def</span> <span class="nf">coerce_type</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">Expression</span><span class="p">)</span> <span class="o">-></span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">:</span>
|
||||
</span><span id="coerce_type-61"><a href="#coerce_type-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">COERCIBLE_DATE_OPS</span><span class="p">):</span>
|
||||
</span><span id="coerce_type-62"><a href="#coerce_type-62"><span class="linenos">62</span></a> <span class="n">_coerce_date</span><span class="p">(</span><span class="n">node</span><span class="o">.</span><span class="n">left</span><span class="p">,</span> <span class="n">node</span><span class="o">.</span><span class="n">right</span><span class="p">)</span>
|
||||
</span><span id="coerce_type-63"><a href="#coerce_type-63"><span class="linenos">63</span></a> <span class="k">elif</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">Between</span><span class="p">):</span>
|
||||
</span><span id="coerce_type-64"><a href="#coerce_type-64"><span class="linenos">64</span></a> <span class="n">_coerce_date</span><span class="p">(</span><span class="n">node</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">node</span><span class="o">.</span><span class="n">args</span><span class="p">[</span><span class="s2">"low"</span><span class="p">])</span>
|
||||
</span><span id="coerce_type-65"><a href="#coerce_type-65"><span class="linenos">65</span></a> <span class="k">elif</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">Extract</span><span class="p">)</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">node</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">type</span><span class="o">.</span><span class="n">is_type</span><span class="p">(</span>
|
||||
</span><span id="coerce_type-66"><a href="#coerce_type-66"><span class="linenos">66</span></a> <span class="o">*</span><span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">TEMPORAL_TYPES</span>
|
||||
</span><span id="coerce_type-67"><a href="#coerce_type-67"><span class="linenos">67</span></a> <span class="p">):</span>
|
||||
</span><span id="coerce_type-68"><a href="#coerce_type-68"><span class="linenos">68</span></a> <span class="n">_replace_cast</span><span class="p">(</span><span class="n">node</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATETIME</span><span class="p">)</span>
|
||||
</span><span id="coerce_type-69"><a href="#coerce_type-69"><span class="linenos">69</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">DateAdd</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DateSub</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DateTrunc</span><span class="p">)):</span>
|
||||
</span><span id="coerce_type-70"><a href="#coerce_type-70"><span class="linenos">70</span></a> <span class="n">_coerce_timeunit_arg</span><span class="p">(</span><span class="n">node</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">node</span><span class="o">.</span><span class="n">unit</span><span class="p">)</span>
|
||||
</span><span id="coerce_type-71"><a href="#coerce_type-71"><span class="linenos">71</span></a> <span class="k">elif</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">DateDiff</span><span class="p">):</span>
|
||||
</span><span id="coerce_type-72"><a href="#coerce_type-72"><span class="linenos">72</span></a> <span class="n">_coerce_datediff_args</span><span class="p">(</span><span class="n">node</span><span class="p">)</span>
|
||||
</span><span id="coerce_type-73"><a href="#coerce_type-73"><span class="linenos">73</span></a>
|
||||
</span><span id="coerce_type-74"><a href="#coerce_type-74"><span class="linenos">74</span></a> <span class="k">return</span> <span class="n">node</span>
|
||||
<div class="pdoc-code codehilite"><pre><span></span><span id="coerce_type-65"><a href="#coerce_type-65"><span class="linenos">65</span></a><span class="k">def</span> <span class="nf">coerce_type</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">Expression</span><span class="p">)</span> <span class="o">-></span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">:</span>
|
||||
</span><span id="coerce_type-66"><a href="#coerce_type-66"><span class="linenos">66</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">COERCIBLE_DATE_OPS</span><span class="p">):</span>
|
||||
</span><span id="coerce_type-67"><a href="#coerce_type-67"><span class="linenos">67</span></a> <span class="n">_coerce_date</span><span class="p">(</span><span class="n">node</span><span class="o">.</span><span class="n">left</span><span class="p">,</span> <span class="n">node</span><span class="o">.</span><span class="n">right</span><span class="p">)</span>
|
||||
</span><span id="coerce_type-68"><a href="#coerce_type-68"><span class="linenos">68</span></a> <span class="k">elif</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">Between</span><span class="p">):</span>
|
||||
</span><span id="coerce_type-69"><a href="#coerce_type-69"><span class="linenos">69</span></a> <span class="n">_coerce_date</span><span class="p">(</span><span class="n">node</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">node</span><span class="o">.</span><span class="n">args</span><span class="p">[</span><span class="s2">"low"</span><span class="p">])</span>
|
||||
</span><span id="coerce_type-70"><a href="#coerce_type-70"><span class="linenos">70</span></a> <span class="k">elif</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">Extract</span><span class="p">)</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">node</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">type</span><span class="o">.</span><span class="n">is_type</span><span class="p">(</span>
|
||||
</span><span id="coerce_type-71"><a href="#coerce_type-71"><span class="linenos">71</span></a> <span class="o">*</span><span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">TEMPORAL_TYPES</span>
|
||||
</span><span id="coerce_type-72"><a href="#coerce_type-72"><span class="linenos">72</span></a> <span class="p">):</span>
|
||||
</span><span id="coerce_type-73"><a href="#coerce_type-73"><span class="linenos">73</span></a> <span class="n">_replace_cast</span><span class="p">(</span><span class="n">node</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATETIME</span><span class="p">)</span>
|
||||
</span><span id="coerce_type-74"><a href="#coerce_type-74"><span class="linenos">74</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">DateAdd</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DateSub</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DateTrunc</span><span class="p">)):</span>
|
||||
</span><span id="coerce_type-75"><a href="#coerce_type-75"><span class="linenos">75</span></a> <span class="n">_coerce_timeunit_arg</span><span class="p">(</span><span class="n">node</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">node</span><span class="o">.</span><span class="n">unit</span><span class="p">)</span>
|
||||
</span><span id="coerce_type-76"><a href="#coerce_type-76"><span class="linenos">76</span></a> <span class="k">elif</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">DateDiff</span><span class="p">):</span>
|
||||
</span><span id="coerce_type-77"><a href="#coerce_type-77"><span class="linenos">77</span></a> <span class="n">_coerce_datediff_args</span><span class="p">(</span><span class="n">node</span><span class="p">)</span>
|
||||
</span><span id="coerce_type-78"><a href="#coerce_type-78"><span class="linenos">78</span></a>
|
||||
</span><span id="coerce_type-79"><a href="#coerce_type-79"><span class="linenos">79</span></a> <span class="k">return</span> <span class="n">node</span>
|
||||
</span></pre></div>
|
||||
|
||||
|
||||
|
|
@ -399,15 +408,14 @@ conversions rely on type inference.</p>
|
|||
|
||||
</div>
|
||||
<a class="headerlink" href="#remove_redundant_casts"></a>
|
||||
<div class="pdoc-code codehilite"><pre><span></span><span id="remove_redundant_casts-77"><a href="#remove_redundant_casts-77"><span class="linenos">77</span></a><span class="k">def</span> <span class="nf">remove_redundant_casts</span><span class="p">(</span><span class="n">expression</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">)</span> <span class="o">-></span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">:</span>
|
||||
</span><span id="remove_redundant_casts-78"><a href="#remove_redundant_casts-78"><span class="linenos">78</span></a> <span class="k">if</span> <span class="p">(</span>
|
||||
</span><span id="remove_redundant_casts-79"><a href="#remove_redundant_casts-79"><span class="linenos">79</span></a> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Cast</span><span class="p">)</span>
|
||||
</span><span id="remove_redundant_casts-80"><a href="#remove_redundant_casts-80"><span class="linenos">80</span></a> <span class="ow">and</span> <span class="n">expression</span><span class="o">.</span><span class="n">to</span><span class="o">.</span><span class="n">type</span>
|
||||
</span><span id="remove_redundant_casts-81"><a href="#remove_redundant_casts-81"><span class="linenos">81</span></a> <span class="ow">and</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">type</span>
|
||||
</span><span id="remove_redundant_casts-82"><a href="#remove_redundant_casts-82"><span class="linenos">82</span></a> <span class="ow">and</span> <span class="n">expression</span><span class="o">.</span><span class="n">to</span><span class="o">.</span><span class="n">type</span><span class="o">.</span><span class="n">this</span> <span class="o">==</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">type</span><span class="o">.</span><span class="n">this</span>
|
||||
</span><span id="remove_redundant_casts-83"><a href="#remove_redundant_casts-83"><span class="linenos">83</span></a> <span class="p">):</span>
|
||||
</span><span id="remove_redundant_casts-84"><a href="#remove_redundant_casts-84"><span class="linenos">84</span></a> <span class="k">return</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span>
|
||||
</span><span id="remove_redundant_casts-85"><a href="#remove_redundant_casts-85"><span class="linenos">85</span></a> <span class="k">return</span> <span class="n">expression</span>
|
||||
<div class="pdoc-code codehilite"><pre><span></span><span id="remove_redundant_casts-82"><a href="#remove_redundant_casts-82"><span class="linenos">82</span></a><span class="k">def</span> <span class="nf">remove_redundant_casts</span><span class="p">(</span><span class="n">expression</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">)</span> <span class="o">-></span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">:</span>
|
||||
</span><span id="remove_redundant_casts-83"><a href="#remove_redundant_casts-83"><span class="linenos">83</span></a> <span class="k">if</span> <span class="p">(</span>
|
||||
</span><span id="remove_redundant_casts-84"><a href="#remove_redundant_casts-84"><span class="linenos">84</span></a> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Cast</span><span class="p">)</span>
|
||||
</span><span id="remove_redundant_casts-85"><a href="#remove_redundant_casts-85"><span class="linenos">85</span></a> <span class="ow">and</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">type</span>
|
||||
</span><span id="remove_redundant_casts-86"><a href="#remove_redundant_casts-86"><span class="linenos">86</span></a> <span class="ow">and</span> <span class="n">expression</span><span class="o">.</span><span class="n">to</span><span class="o">.</span><span class="n">this</span> <span class="o">==</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">type</span><span class="o">.</span><span class="n">this</span>
|
||||
</span><span id="remove_redundant_casts-87"><a href="#remove_redundant_casts-87"><span class="linenos">87</span></a> <span class="p">):</span>
|
||||
</span><span id="remove_redundant_casts-88"><a href="#remove_redundant_casts-88"><span class="linenos">88</span></a> <span class="k">return</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span>
|
||||
</span><span id="remove_redundant_casts-89"><a href="#remove_redundant_casts-89"><span class="linenos">89</span></a> <span class="k">return</span> <span class="n">expression</span>
|
||||
</span></pre></div>
|
||||
|
||||
|
||||
|
|
@ -425,23 +433,23 @@ conversions rely on type inference.</p>
|
|||
|
||||
</div>
|
||||
<a class="headerlink" href="#ensure_bools"></a>
|
||||
<div class="pdoc-code codehilite"><pre><span></span><span id="ensure_bools-88"><a href="#ensure_bools-88"><span class="linenos"> 88</span></a><span class="k">def</span> <span class="nf">ensure_bools</span><span class="p">(</span>
|
||||
</span><span id="ensure_bools-89"><a href="#ensure_bools-89"><span class="linenos"> 89</span></a> <span class="n">expression</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">,</span> <span class="n">replace_func</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Callable</span><span class="p">[[</span><span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">],</span> <span class="kc">None</span><span class="p">]</span>
|
||||
</span><span id="ensure_bools-90"><a href="#ensure_bools-90"><span class="linenos"> 90</span></a><span class="p">)</span> <span class="o">-></span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">:</span>
|
||||
</span><span id="ensure_bools-91"><a href="#ensure_bools-91"><span class="linenos"> 91</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">):</span>
|
||||
</span><span id="ensure_bools-92"><a href="#ensure_bools-92"><span class="linenos"> 92</span></a> <span class="n">replace_func</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">left</span><span class="p">)</span>
|
||||
</span><span id="ensure_bools-93"><a href="#ensure_bools-93"><span class="linenos"> 93</span></a> <span class="n">replace_func</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">right</span><span class="p">)</span>
|
||||
</span><span id="ensure_bools-94"><a href="#ensure_bools-94"><span class="linenos"> 94</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Not</span><span class="p">):</span>
|
||||
</span><span id="ensure_bools-95"><a href="#ensure_bools-95"><span class="linenos"> 95</span></a> <span class="n">replace_func</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">)</span>
|
||||
</span><span id="ensure_bools-96"><a href="#ensure_bools-96"><span class="linenos"> 96</span></a> <span class="c1"># We can't replace num in CASE x WHEN num ..., because it's not the full predicate</span>
|
||||
</span><span id="ensure_bools-97"><a href="#ensure_bools-97"><span class="linenos"> 97</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">If</span><span class="p">)</span> <span class="ow">and</span> <span class="ow">not</span> <span class="p">(</span>
|
||||
</span><span id="ensure_bools-98"><a href="#ensure_bools-98"><span class="linenos"> 98</span></a> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">parent</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Case</span><span class="p">)</span> <span class="ow">and</span> <span class="n">expression</span><span class="o">.</span><span class="n">parent</span><span class="o">.</span><span class="n">this</span>
|
||||
</span><span id="ensure_bools-99"><a href="#ensure_bools-99"><span class="linenos"> 99</span></a> <span class="p">):</span>
|
||||
</span><span id="ensure_bools-100"><a href="#ensure_bools-100"><span class="linenos">100</span></a> <span class="n">replace_func</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">)</span>
|
||||
</span><span id="ensure_bools-101"><a href="#ensure_bools-101"><span class="linenos">101</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Where</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Having</span><span class="p">)):</span>
|
||||
</span><span id="ensure_bools-102"><a href="#ensure_bools-102"><span class="linenos">102</span></a> <span class="n">replace_func</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">)</span>
|
||||
</span><span id="ensure_bools-103"><a href="#ensure_bools-103"><span class="linenos">103</span></a>
|
||||
</span><span id="ensure_bools-104"><a href="#ensure_bools-104"><span class="linenos">104</span></a> <span class="k">return</span> <span class="n">expression</span>
|
||||
<div class="pdoc-code codehilite"><pre><span></span><span id="ensure_bools-92"><a href="#ensure_bools-92"><span class="linenos"> 92</span></a><span class="k">def</span> <span class="nf">ensure_bools</span><span class="p">(</span>
|
||||
</span><span id="ensure_bools-93"><a href="#ensure_bools-93"><span class="linenos"> 93</span></a> <span class="n">expression</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">,</span> <span class="n">replace_func</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Callable</span><span class="p">[[</span><span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">],</span> <span class="kc">None</span><span class="p">]</span>
|
||||
</span><span id="ensure_bools-94"><a href="#ensure_bools-94"><span class="linenos"> 94</span></a><span class="p">)</span> <span class="o">-></span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">:</span>
|
||||
</span><span id="ensure_bools-95"><a href="#ensure_bools-95"><span class="linenos"> 95</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">):</span>
|
||||
</span><span id="ensure_bools-96"><a href="#ensure_bools-96"><span class="linenos"> 96</span></a> <span class="n">replace_func</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">left</span><span class="p">)</span>
|
||||
</span><span id="ensure_bools-97"><a href="#ensure_bools-97"><span class="linenos"> 97</span></a> <span class="n">replace_func</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">right</span><span class="p">)</span>
|
||||
</span><span id="ensure_bools-98"><a href="#ensure_bools-98"><span class="linenos"> 98</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Not</span><span class="p">):</span>
|
||||
</span><span id="ensure_bools-99"><a href="#ensure_bools-99"><span class="linenos"> 99</span></a> <span class="n">replace_func</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">)</span>
|
||||
</span><span id="ensure_bools-100"><a href="#ensure_bools-100"><span class="linenos">100</span></a> <span class="c1"># We can't replace num in CASE x WHEN num ..., because it's not the full predicate</span>
|
||||
</span><span id="ensure_bools-101"><a href="#ensure_bools-101"><span class="linenos">101</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">If</span><span class="p">)</span> <span class="ow">and</span> <span class="ow">not</span> <span class="p">(</span>
|
||||
</span><span id="ensure_bools-102"><a href="#ensure_bools-102"><span class="linenos">102</span></a> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">parent</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Case</span><span class="p">)</span> <span class="ow">and</span> <span class="n">expression</span><span class="o">.</span><span class="n">parent</span><span class="o">.</span><span class="n">this</span>
|
||||
</span><span id="ensure_bools-103"><a href="#ensure_bools-103"><span class="linenos">103</span></a> <span class="p">):</span>
|
||||
</span><span id="ensure_bools-104"><a href="#ensure_bools-104"><span class="linenos">104</span></a> <span class="n">replace_func</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">)</span>
|
||||
</span><span id="ensure_bools-105"><a href="#ensure_bools-105"><span class="linenos">105</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Where</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Having</span><span class="p">)):</span>
|
||||
</span><span id="ensure_bools-106"><a href="#ensure_bools-106"><span class="linenos">106</span></a> <span class="n">replace_func</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">)</span>
|
||||
</span><span id="ensure_bools-107"><a href="#ensure_bools-107"><span class="linenos">107</span></a>
|
||||
</span><span id="ensure_bools-108"><a href="#ensure_bools-108"><span class="linenos">108</span></a> <span class="k">return</span> <span class="n">expression</span>
|
||||
</span></pre></div>
|
||||
|
||||
|
||||
|
|
@ -459,12 +467,12 @@ conversions rely on type inference.</p>
|
|||
|
||||
</div>
|
||||
<a class="headerlink" href="#remove_ascending_order"></a>
|
||||
<div class="pdoc-code codehilite"><pre><span></span><span id="remove_ascending_order-107"><a href="#remove_ascending_order-107"><span class="linenos">107</span></a><span class="k">def</span> <span class="nf">remove_ascending_order</span><span class="p">(</span><span class="n">expression</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">)</span> <span class="o">-></span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">:</span>
|
||||
</span><span id="remove_ascending_order-108"><a href="#remove_ascending_order-108"><span class="linenos">108</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Ordered</span><span class="p">)</span> <span class="ow">and</span> <span class="n">expression</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">"desc"</span><span class="p">)</span> <span class="ow">is</span> <span class="kc">False</span><span class="p">:</span>
|
||||
</span><span id="remove_ascending_order-109"><a href="#remove_ascending_order-109"><span class="linenos">109</span></a> <span class="c1"># Convert ORDER BY a ASC to ORDER BY a</span>
|
||||
</span><span id="remove_ascending_order-110"><a href="#remove_ascending_order-110"><span class="linenos">110</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"desc"</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span>
|
||||
</span><span id="remove_ascending_order-111"><a href="#remove_ascending_order-111"><span class="linenos">111</span></a>
|
||||
</span><span id="remove_ascending_order-112"><a href="#remove_ascending_order-112"><span class="linenos">112</span></a> <span class="k">return</span> <span class="n">expression</span>
|
||||
<div class="pdoc-code codehilite"><pre><span></span><span id="remove_ascending_order-111"><a href="#remove_ascending_order-111"><span class="linenos">111</span></a><span class="k">def</span> <span class="nf">remove_ascending_order</span><span class="p">(</span><span class="n">expression</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">)</span> <span class="o">-></span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">:</span>
|
||||
</span><span id="remove_ascending_order-112"><a href="#remove_ascending_order-112"><span class="linenos">112</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Ordered</span><span class="p">)</span> <span class="ow">and</span> <span class="n">expression</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">"desc"</span><span class="p">)</span> <span class="ow">is</span> <span class="kc">False</span><span class="p">:</span>
|
||||
</span><span id="remove_ascending_order-113"><a href="#remove_ascending_order-113"><span class="linenos">113</span></a> <span class="c1"># Convert ORDER BY a ASC to ORDER BY a</span>
|
||||
</span><span id="remove_ascending_order-114"><a href="#remove_ascending_order-114"><span class="linenos">114</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"desc"</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span>
|
||||
</span><span id="remove_ascending_order-115"><a href="#remove_ascending_order-115"><span class="linenos">115</span></a>
|
||||
</span><span id="remove_ascending_order-116"><a href="#remove_ascending_order-116"><span class="linenos">116</span></a> <span class="k">return</span> <span class="n">expression</span>
|
||||
</span></pre></div>
|
||||
|
||||
|
||||
|
|
|
|||
|
|
@ -585,7 +585,7 @@ queries if it would result in multiple table selects in a single query:</p>
|
|||
<div class="attr variable">
|
||||
<span class="name">UNMERGABLE_ARGS</span> =
|
||||
<input id="UNMERGABLE_ARGS-view-value" class="view-value-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1">
|
||||
<label class="view-value-button pdoc-button" for="UNMERGABLE_ARGS-view-value"></label><span class="default_value">{'match', 'format', 'having', 'windows', 'settings', 'laterals', 'connect', 'qualify', 'group', 'cluster', 'distribute', 'kind', 'sample', 'sort', 'locks', 'offset', 'with', 'pivots', 'into', 'distinct', 'limit'}</span>
|
||||
<label class="view-value-button pdoc-button" for="UNMERGABLE_ARGS-view-value"></label><span class="default_value">{'distinct', 'settings', 'distribute', 'sample', 'pivots', 'laterals', 'into', 'qualify', 'sort', 'cluster', 'limit', 'format', 'connect', 'windows', 'match', 'having', 'offset', 'kind', 'with', 'group', 'locks'}</span>
|
||||
|
||||
|
||||
</div>
|
||||
|
|
|
|||
|
|
@ -756,67 +756,72 @@
|
|||
</span><span id="L-662"><a href="#L-662"><span class="linenos">662</span></a> <span class="k">else</span><span class="p">:</span>
|
||||
</span><span id="L-663"><a href="#L-663"><span class="linenos">663</span></a> <span class="n">column_aliases</span> <span class="o">=</span> <span class="p">[]</span>
|
||||
</span><span id="L-664"><a href="#L-664"><span class="linenos">664</span></a>
|
||||
</span><span id="L-665"><a href="#L-665"><span class="linenos">665</span></a> <span class="c1"># If the source's columns are aliased, their aliases shadow the corresponding column names</span>
|
||||
</span><span id="L-666"><a href="#L-666"><span class="linenos">666</span></a> <span class="k">return</span> <span class="p">[</span><span class="n">alias</span> <span class="ow">or</span> <span class="n">name</span> <span class="k">for</span> <span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">alias</span><span class="p">)</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">zip_longest</span><span class="p">(</span><span class="n">columns</span><span class="p">,</span> <span class="n">column_aliases</span><span class="p">)]</span>
|
||||
</span><span id="L-667"><a href="#L-667"><span class="linenos">667</span></a>
|
||||
</span><span id="L-668"><a href="#L-668"><span class="linenos">668</span></a> <span class="k">def</span> <span class="nf">_get_all_source_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">t</span><span class="o">.</span><span class="n">List</span><span class="p">[</span><span class="nb">str</span><span class="p">]]:</span>
|
||||
</span><span id="L-669"><a href="#L-669"><span class="linenos">669</span></a> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
|
||||
</span><span id="L-670"><a href="#L-670"><span class="linenos">670</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> <span class="o">=</span> <span class="p">{</span>
|
||||
</span><span id="L-671"><a href="#L-671"><span class="linenos">671</span></a> <span class="n">source_name</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_source_columns</span><span class="p">(</span><span class="n">source_name</span><span class="p">)</span>
|
||||
</span><span id="L-672"><a href="#L-672"><span class="linenos">672</span></a> <span class="k">for</span> <span class="n">source_name</span><span class="p">,</span> <span class="n">source</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><span id="L-673"><a href="#L-673"><span class="linenos">673</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="o">.</span><span class="n">items</span><span class="p">(),</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">lateral_sources</span><span class="o">.</span><span class="n">items</span><span class="p">()</span>
|
||||
</span><span id="L-674"><a href="#L-674"><span class="linenos">674</span></a> <span class="p">)</span>
|
||||
</span><span id="L-675"><a href="#L-675"><span class="linenos">675</span></a> <span class="p">}</span>
|
||||
</span><span id="L-676"><a href="#L-676"><span class="linenos">676</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span>
|
||||
</span><span id="L-677"><a href="#L-677"><span class="linenos">677</span></a>
|
||||
</span><span id="L-678"><a href="#L-678"><span class="linenos">678</span></a> <span class="k">def</span> <span class="nf">_get_unambiguous_columns</span><span class="p">(</span>
|
||||
</span><span id="L-679"><a href="#L-679"><span class="linenos">679</span></a> <span class="bp">self</span><span class="p">,</span> <span class="n">source_columns</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">t</span><span class="o">.</span><span class="n">List</span><span class="p">[</span><span class="nb">str</span><span class="p">]]</span>
|
||||
</span><span id="L-680"><a href="#L-680"><span class="linenos">680</span></a> <span class="p">)</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="nb">str</span><span class="p">]:</span>
|
||||
</span><span id="L-681"><a href="#L-681"><span class="linenos">681</span></a><span class="w"> </span><span class="sd">"""</span>
|
||||
</span><span id="L-682"><a href="#L-682"><span class="linenos">682</span></a><span class="sd"> Find all the unambiguous columns in sources.</span>
|
||||
</span><span id="L-683"><a href="#L-683"><span class="linenos">683</span></a>
|
||||
</span><span id="L-684"><a href="#L-684"><span class="linenos">684</span></a><span class="sd"> Args:</span>
|
||||
</span><span id="L-685"><a href="#L-685"><span class="linenos">685</span></a><span class="sd"> source_columns: Mapping of names to source columns.</span>
|
||||
</span><span id="L-686"><a href="#L-686"><span class="linenos">686</span></a>
|
||||
</span><span id="L-687"><a href="#L-687"><span class="linenos">687</span></a><span class="sd"> Returns:</span>
|
||||
</span><span id="L-688"><a href="#L-688"><span class="linenos">688</span></a><span class="sd"> Mapping of column name to source name.</span>
|
||||
</span><span id="L-689"><a href="#L-689"><span class="linenos">689</span></a><span class="sd"> """</span>
|
||||
</span><span id="L-690"><a href="#L-690"><span class="linenos">690</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">source_columns</span><span class="p">:</span>
|
||||
</span><span id="L-691"><a href="#L-691"><span class="linenos">691</span></a> <span class="k">return</span> <span class="p">{}</span>
|
||||
</span><span id="L-692"><a href="#L-692"><span class="linenos">692</span></a>
|
||||
</span><span id="L-693"><a href="#L-693"><span class="linenos">693</span></a> <span class="n">source_columns_pairs</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="n">source_columns</span><span class="o">.</span><span class="n">items</span><span class="p">())</span>
|
||||
</span><span id="L-694"><a href="#L-694"><span class="linenos">694</span></a>
|
||||
</span><span id="L-695"><a href="#L-695"><span class="linenos">695</span></a> <span class="n">first_table</span><span class="p">,</span> <span class="n">first_columns</span> <span class="o">=</span> <span class="n">source_columns_pairs</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
|
||||
</span><span id="L-696"><a href="#L-696"><span class="linenos">696</span></a> <span class="n">unambiguous_columns</span> <span class="o">=</span> <span class="p">{</span><span class="n">col</span><span class="p">:</span> <span class="n">first_table</span> <span class="k">for</span> <span class="n">col</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_find_unique_columns</span><span class="p">(</span><span class="n">first_columns</span><span class="p">)}</span>
|
||||
</span><span id="L-697"><a href="#L-697"><span class="linenos">697</span></a> <span class="n">all_columns</span> <span class="o">=</span> <span class="nb">set</span><span class="p">(</span><span class="n">unambiguous_columns</span><span class="p">)</span>
|
||||
</span><span id="L-698"><a href="#L-698"><span class="linenos">698</span></a>
|
||||
</span><span id="L-699"><a href="#L-699"><span class="linenos">699</span></a> <span class="k">for</span> <span class="n">table</span><span class="p">,</span> <span class="n">columns</span> <span class="ow">in</span> <span class="n">source_columns_pairs</span><span class="p">[</span><span class="mi">1</span><span class="p">:]:</span>
|
||||
</span><span id="L-700"><a href="#L-700"><span class="linenos">700</span></a> <span class="n">unique</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_find_unique_columns</span><span class="p">(</span><span class="n">columns</span><span class="p">)</span>
|
||||
</span><span id="L-701"><a href="#L-701"><span class="linenos">701</span></a> <span class="n">ambiguous</span> <span class="o">=</span> <span class="nb">set</span><span class="p">(</span><span class="n">all_columns</span><span class="p">)</span><span class="o">.</span><span class="n">intersection</span><span class="p">(</span><span class="n">unique</span><span class="p">)</span>
|
||||
</span><span id="L-702"><a href="#L-702"><span class="linenos">702</span></a> <span class="n">all_columns</span><span class="o">.</span><span class="n">update</span><span class="p">(</span><span class="n">columns</span><span class="p">)</span>
|
||||
</span><span id="L-665"><a href="#L-665"><span class="linenos">665</span></a> <span class="k">if</span> <span class="n">column_aliases</span><span class="p">:</span>
|
||||
</span><span id="L-666"><a href="#L-666"><span class="linenos">666</span></a> <span class="c1"># If the source's columns are aliased, their aliases shadow the corresponding column names.</span>
|
||||
</span><span id="L-667"><a href="#L-667"><span class="linenos">667</span></a> <span class="c1"># This can be expensive if there are lots of columns, so only do this if column_aliases exist.</span>
|
||||
</span><span id="L-668"><a href="#L-668"><span class="linenos">668</span></a> <span class="k">return</span> <span class="p">[</span>
|
||||
</span><span id="L-669"><a href="#L-669"><span class="linenos">669</span></a> <span class="n">alias</span> <span class="ow">or</span> <span class="n">name</span> <span class="k">for</span> <span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">alias</span><span class="p">)</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">zip_longest</span><span class="p">(</span><span class="n">columns</span><span class="p">,</span> <span class="n">column_aliases</span><span class="p">)</span>
|
||||
</span><span id="L-670"><a href="#L-670"><span class="linenos">670</span></a> <span class="p">]</span>
|
||||
</span><span id="L-671"><a href="#L-671"><span class="linenos">671</span></a> <span class="k">return</span> <span class="n">columns</span>
|
||||
</span><span id="L-672"><a href="#L-672"><span class="linenos">672</span></a>
|
||||
</span><span id="L-673"><a href="#L-673"><span class="linenos">673</span></a> <span class="k">def</span> <span class="nf">_get_all_source_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">t</span><span class="o">.</span><span class="n">List</span><span class="p">[</span><span class="nb">str</span><span class="p">]]:</span>
|
||||
</span><span id="L-674"><a href="#L-674"><span class="linenos">674</span></a> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
|
||||
</span><span id="L-675"><a href="#L-675"><span class="linenos">675</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> <span class="o">=</span> <span class="p">{</span>
|
||||
</span><span id="L-676"><a href="#L-676"><span class="linenos">676</span></a> <span class="n">source_name</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_source_columns</span><span class="p">(</span><span class="n">source_name</span><span class="p">)</span>
|
||||
</span><span id="L-677"><a href="#L-677"><span class="linenos">677</span></a> <span class="k">for</span> <span class="n">source_name</span><span class="p">,</span> <span class="n">source</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><span id="L-678"><a href="#L-678"><span class="linenos">678</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="o">.</span><span class="n">items</span><span class="p">(),</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">lateral_sources</span><span class="o">.</span><span class="n">items</span><span class="p">()</span>
|
||||
</span><span id="L-679"><a href="#L-679"><span class="linenos">679</span></a> <span class="p">)</span>
|
||||
</span><span id="L-680"><a href="#L-680"><span class="linenos">680</span></a> <span class="p">}</span>
|
||||
</span><span id="L-681"><a href="#L-681"><span class="linenos">681</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span>
|
||||
</span><span id="L-682"><a href="#L-682"><span class="linenos">682</span></a>
|
||||
</span><span id="L-683"><a href="#L-683"><span class="linenos">683</span></a> <span class="k">def</span> <span class="nf">_get_unambiguous_columns</span><span class="p">(</span>
|
||||
</span><span id="L-684"><a href="#L-684"><span class="linenos">684</span></a> <span class="bp">self</span><span class="p">,</span> <span class="n">source_columns</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">t</span><span class="o">.</span><span class="n">List</span><span class="p">[</span><span class="nb">str</span><span class="p">]]</span>
|
||||
</span><span id="L-685"><a href="#L-685"><span class="linenos">685</span></a> <span class="p">)</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="nb">str</span><span class="p">]:</span>
|
||||
</span><span id="L-686"><a href="#L-686"><span class="linenos">686</span></a><span class="w"> </span><span class="sd">"""</span>
|
||||
</span><span id="L-687"><a href="#L-687"><span class="linenos">687</span></a><span class="sd"> Find all the unambiguous columns in sources.</span>
|
||||
</span><span id="L-688"><a href="#L-688"><span class="linenos">688</span></a>
|
||||
</span><span id="L-689"><a href="#L-689"><span class="linenos">689</span></a><span class="sd"> Args:</span>
|
||||
</span><span id="L-690"><a href="#L-690"><span class="linenos">690</span></a><span class="sd"> source_columns: Mapping of names to source columns.</span>
|
||||
</span><span id="L-691"><a href="#L-691"><span class="linenos">691</span></a>
|
||||
</span><span id="L-692"><a href="#L-692"><span class="linenos">692</span></a><span class="sd"> Returns:</span>
|
||||
</span><span id="L-693"><a href="#L-693"><span class="linenos">693</span></a><span class="sd"> Mapping of column name to source name.</span>
|
||||
</span><span id="L-694"><a href="#L-694"><span class="linenos">694</span></a><span class="sd"> """</span>
|
||||
</span><span id="L-695"><a href="#L-695"><span class="linenos">695</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">source_columns</span><span class="p">:</span>
|
||||
</span><span id="L-696"><a href="#L-696"><span class="linenos">696</span></a> <span class="k">return</span> <span class="p">{}</span>
|
||||
</span><span id="L-697"><a href="#L-697"><span class="linenos">697</span></a>
|
||||
</span><span id="L-698"><a href="#L-698"><span class="linenos">698</span></a> <span class="n">source_columns_pairs</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="n">source_columns</span><span class="o">.</span><span class="n">items</span><span class="p">())</span>
|
||||
</span><span id="L-699"><a href="#L-699"><span class="linenos">699</span></a>
|
||||
</span><span id="L-700"><a href="#L-700"><span class="linenos">700</span></a> <span class="n">first_table</span><span class="p">,</span> <span class="n">first_columns</span> <span class="o">=</span> <span class="n">source_columns_pairs</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
|
||||
</span><span id="L-701"><a href="#L-701"><span class="linenos">701</span></a> <span class="n">unambiguous_columns</span> <span class="o">=</span> <span class="p">{</span><span class="n">col</span><span class="p">:</span> <span class="n">first_table</span> <span class="k">for</span> <span class="n">col</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_find_unique_columns</span><span class="p">(</span><span class="n">first_columns</span><span class="p">)}</span>
|
||||
</span><span id="L-702"><a href="#L-702"><span class="linenos">702</span></a> <span class="n">all_columns</span> <span class="o">=</span> <span class="nb">set</span><span class="p">(</span><span class="n">unambiguous_columns</span><span class="p">)</span>
|
||||
</span><span id="L-703"><a href="#L-703"><span class="linenos">703</span></a>
|
||||
</span><span id="L-704"><a href="#L-704"><span class="linenos">704</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">ambiguous</span><span class="p">:</span>
|
||||
</span><span id="L-705"><a href="#L-705"><span class="linenos">705</span></a> <span class="n">unambiguous_columns</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="n">column</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span>
|
||||
</span><span id="L-706"><a href="#L-706"><span class="linenos">706</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">unique</span><span class="o">.</span><span class="n">difference</span><span class="p">(</span><span class="n">ambiguous</span><span class="p">):</span>
|
||||
</span><span id="L-707"><a href="#L-707"><span class="linenos">707</span></a> <span class="n">unambiguous_columns</span><span class="p">[</span><span class="n">column</span><span class="p">]</span> <span class="o">=</span> <span class="n">table</span>
|
||||
</span><span id="L-704"><a href="#L-704"><span class="linenos">704</span></a> <span class="k">for</span> <span class="n">table</span><span class="p">,</span> <span class="n">columns</span> <span class="ow">in</span> <span class="n">source_columns_pairs</span><span class="p">[</span><span class="mi">1</span><span class="p">:]:</span>
|
||||
</span><span id="L-705"><a href="#L-705"><span class="linenos">705</span></a> <span class="n">unique</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_find_unique_columns</span><span class="p">(</span><span class="n">columns</span><span class="p">)</span>
|
||||
</span><span id="L-706"><a href="#L-706"><span class="linenos">706</span></a> <span class="n">ambiguous</span> <span class="o">=</span> <span class="nb">set</span><span class="p">(</span><span class="n">all_columns</span><span class="p">)</span><span class="o">.</span><span class="n">intersection</span><span class="p">(</span><span class="n">unique</span><span class="p">)</span>
|
||||
</span><span id="L-707"><a href="#L-707"><span class="linenos">707</span></a> <span class="n">all_columns</span><span class="o">.</span><span class="n">update</span><span class="p">(</span><span class="n">columns</span><span class="p">)</span>
|
||||
</span><span id="L-708"><a href="#L-708"><span class="linenos">708</span></a>
|
||||
</span><span id="L-709"><a href="#L-709"><span class="linenos">709</span></a> <span class="k">return</span> <span class="n">unambiguous_columns</span>
|
||||
</span><span id="L-710"><a href="#L-710"><span class="linenos">710</span></a>
|
||||
</span><span id="L-711"><a href="#L-711"><span class="linenos">711</span></a> <span class="nd">@staticmethod</span>
|
||||
</span><span id="L-712"><a href="#L-712"><span class="linenos">712</span></a> <span class="k">def</span> <span class="nf">_find_unique_columns</span><span class="p">(</span><span class="n">columns</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Collection</span><span class="p">[</span><span class="nb">str</span><span class="p">])</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">Set</span><span class="p">[</span><span class="nb">str</span><span class="p">]:</span>
|
||||
</span><span id="L-713"><a href="#L-713"><span class="linenos">713</span></a><span class="w"> </span><span class="sd">"""</span>
|
||||
</span><span id="L-714"><a href="#L-714"><span class="linenos">714</span></a><span class="sd"> Find the unique columns in a list of columns.</span>
|
||||
</span><span id="L-709"><a href="#L-709"><span class="linenos">709</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">ambiguous</span><span class="p">:</span>
|
||||
</span><span id="L-710"><a href="#L-710"><span class="linenos">710</span></a> <span class="n">unambiguous_columns</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="n">column</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span>
|
||||
</span><span id="L-711"><a href="#L-711"><span class="linenos">711</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">unique</span><span class="o">.</span><span class="n">difference</span><span class="p">(</span><span class="n">ambiguous</span><span class="p">):</span>
|
||||
</span><span id="L-712"><a href="#L-712"><span class="linenos">712</span></a> <span class="n">unambiguous_columns</span><span class="p">[</span><span class="n">column</span><span class="p">]</span> <span class="o">=</span> <span class="n">table</span>
|
||||
</span><span id="L-713"><a href="#L-713"><span class="linenos">713</span></a>
|
||||
</span><span id="L-714"><a href="#L-714"><span class="linenos">714</span></a> <span class="k">return</span> <span class="n">unambiguous_columns</span>
|
||||
</span><span id="L-715"><a href="#L-715"><span class="linenos">715</span></a>
|
||||
</span><span id="L-716"><a href="#L-716"><span class="linenos">716</span></a><span class="sd"> Example:</span>
|
||||
</span><span id="L-717"><a href="#L-717"><span class="linenos">717</span></a><span class="sd"> >>> sorted(Resolver._find_unique_columns(["a", "b", "b", "c"]))</span>
|
||||
</span><span id="L-718"><a href="#L-718"><span class="linenos">718</span></a><span class="sd"> ['a', 'c']</span>
|
||||
</span><span id="L-719"><a href="#L-719"><span class="linenos">719</span></a>
|
||||
</span><span id="L-720"><a href="#L-720"><span class="linenos">720</span></a><span class="sd"> This is necessary because duplicate column names are ambiguous.</span>
|
||||
</span><span id="L-721"><a href="#L-721"><span class="linenos">721</span></a><span class="sd"> """</span>
|
||||
</span><span id="L-722"><a href="#L-722"><span class="linenos">722</span></a> <span class="n">counts</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="nb">int</span><span class="p">]</span> <span class="o">=</span> <span class="p">{}</span>
|
||||
</span><span id="L-723"><a href="#L-723"><span class="linenos">723</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">columns</span><span class="p">:</span>
|
||||
</span><span id="L-724"><a href="#L-724"><span class="linenos">724</span></a> <span class="n">counts</span><span class="p">[</span><span class="n">column</span><span class="p">]</span> <span class="o">=</span> <span class="n">counts</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">column</span><span class="p">,</span> <span class="mi">0</span><span class="p">)</span> <span class="o">+</span> <span class="mi">1</span>
|
||||
</span><span id="L-725"><a href="#L-725"><span class="linenos">725</span></a> <span class="k">return</span> <span class="p">{</span><span class="n">column</span> <span class="k">for</span> <span class="n">column</span><span class="p">,</span> <span class="n">count</span> <span class="ow">in</span> <span class="n">counts</span><span class="o">.</span><span class="n">items</span><span class="p">()</span> <span class="k">if</span> <span class="n">count</span> <span class="o">==</span> <span class="mi">1</span><span class="p">}</span>
|
||||
</span><span id="L-716"><a href="#L-716"><span class="linenos">716</span></a> <span class="nd">@staticmethod</span>
|
||||
</span><span id="L-717"><a href="#L-717"><span class="linenos">717</span></a> <span class="k">def</span> <span class="nf">_find_unique_columns</span><span class="p">(</span><span class="n">columns</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Collection</span><span class="p">[</span><span class="nb">str</span><span class="p">])</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">Set</span><span class="p">[</span><span class="nb">str</span><span class="p">]:</span>
|
||||
</span><span id="L-718"><a href="#L-718"><span class="linenos">718</span></a><span class="w"> </span><span class="sd">"""</span>
|
||||
</span><span id="L-719"><a href="#L-719"><span class="linenos">719</span></a><span class="sd"> Find the unique columns in a list of columns.</span>
|
||||
</span><span id="L-720"><a href="#L-720"><span class="linenos">720</span></a>
|
||||
</span><span id="L-721"><a href="#L-721"><span class="linenos">721</span></a><span class="sd"> Example:</span>
|
||||
</span><span id="L-722"><a href="#L-722"><span class="linenos">722</span></a><span class="sd"> >>> sorted(Resolver._find_unique_columns(["a", "b", "b", "c"]))</span>
|
||||
</span><span id="L-723"><a href="#L-723"><span class="linenos">723</span></a><span class="sd"> ['a', 'c']</span>
|
||||
</span><span id="L-724"><a href="#L-724"><span class="linenos">724</span></a>
|
||||
</span><span id="L-725"><a href="#L-725"><span class="linenos">725</span></a><span class="sd"> This is necessary because duplicate column names are ambiguous.</span>
|
||||
</span><span id="L-726"><a href="#L-726"><span class="linenos">726</span></a><span class="sd"> """</span>
|
||||
</span><span id="L-727"><a href="#L-727"><span class="linenos">727</span></a> <span class="n">counts</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="nb">int</span><span class="p">]</span> <span class="o">=</span> <span class="p">{}</span>
|
||||
</span><span id="L-728"><a href="#L-728"><span class="linenos">728</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">columns</span><span class="p">:</span>
|
||||
</span><span id="L-729"><a href="#L-729"><span class="linenos">729</span></a> <span class="n">counts</span><span class="p">[</span><span class="n">column</span><span class="p">]</span> <span class="o">=</span> <span class="n">counts</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">column</span><span class="p">,</span> <span class="mi">0</span><span class="p">)</span> <span class="o">+</span> <span class="mi">1</span>
|
||||
</span><span id="L-730"><a href="#L-730"><span class="linenos">730</span></a> <span class="k">return</span> <span class="p">{</span><span class="n">column</span> <span class="k">for</span> <span class="n">column</span><span class="p">,</span> <span class="n">count</span> <span class="ow">in</span> <span class="n">counts</span><span class="o">.</span><span class="n">items</span><span class="p">()</span> <span class="k">if</span> <span class="n">count</span> <span class="o">==</span> <span class="mi">1</span><span class="p">}</span>
|
||||
</span></pre></div>
|
||||
|
||||
|
||||
|
|
@ -1228,67 +1233,72 @@ know what you're doing!</li>
|
|||
</span><span id="Resolver-663"><a href="#Resolver-663"><span class="linenos">663</span></a> <span class="k">else</span><span class="p">:</span>
|
||||
</span><span id="Resolver-664"><a href="#Resolver-664"><span class="linenos">664</span></a> <span class="n">column_aliases</span> <span class="o">=</span> <span class="p">[]</span>
|
||||
</span><span id="Resolver-665"><a href="#Resolver-665"><span class="linenos">665</span></a>
|
||||
</span><span id="Resolver-666"><a href="#Resolver-666"><span class="linenos">666</span></a> <span class="c1"># If the source's columns are aliased, their aliases shadow the corresponding column names</span>
|
||||
</span><span id="Resolver-667"><a href="#Resolver-667"><span class="linenos">667</span></a> <span class="k">return</span> <span class="p">[</span><span class="n">alias</span> <span class="ow">or</span> <span class="n">name</span> <span class="k">for</span> <span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">alias</span><span class="p">)</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">zip_longest</span><span class="p">(</span><span class="n">columns</span><span class="p">,</span> <span class="n">column_aliases</span><span class="p">)]</span>
|
||||
</span><span id="Resolver-668"><a href="#Resolver-668"><span class="linenos">668</span></a>
|
||||
</span><span id="Resolver-669"><a href="#Resolver-669"><span class="linenos">669</span></a> <span class="k">def</span> <span class="nf">_get_all_source_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">t</span><span class="o">.</span><span class="n">List</span><span class="p">[</span><span class="nb">str</span><span class="p">]]:</span>
|
||||
</span><span id="Resolver-670"><a href="#Resolver-670"><span class="linenos">670</span></a> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
|
||||
</span><span id="Resolver-671"><a href="#Resolver-671"><span class="linenos">671</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> <span class="o">=</span> <span class="p">{</span>
|
||||
</span><span id="Resolver-672"><a href="#Resolver-672"><span class="linenos">672</span></a> <span class="n">source_name</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_source_columns</span><span class="p">(</span><span class="n">source_name</span><span class="p">)</span>
|
||||
</span><span id="Resolver-673"><a href="#Resolver-673"><span class="linenos">673</span></a> <span class="k">for</span> <span class="n">source_name</span><span class="p">,</span> <span class="n">source</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><span id="Resolver-674"><a href="#Resolver-674"><span class="linenos">674</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="o">.</span><span class="n">items</span><span class="p">(),</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">lateral_sources</span><span class="o">.</span><span class="n">items</span><span class="p">()</span>
|
||||
</span><span id="Resolver-675"><a href="#Resolver-675"><span class="linenos">675</span></a> <span class="p">)</span>
|
||||
</span><span id="Resolver-676"><a href="#Resolver-676"><span class="linenos">676</span></a> <span class="p">}</span>
|
||||
</span><span id="Resolver-677"><a href="#Resolver-677"><span class="linenos">677</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span>
|
||||
</span><span id="Resolver-678"><a href="#Resolver-678"><span class="linenos">678</span></a>
|
||||
</span><span id="Resolver-679"><a href="#Resolver-679"><span class="linenos">679</span></a> <span class="k">def</span> <span class="nf">_get_unambiguous_columns</span><span class="p">(</span>
|
||||
</span><span id="Resolver-680"><a href="#Resolver-680"><span class="linenos">680</span></a> <span class="bp">self</span><span class="p">,</span> <span class="n">source_columns</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">t</span><span class="o">.</span><span class="n">List</span><span class="p">[</span><span class="nb">str</span><span class="p">]]</span>
|
||||
</span><span id="Resolver-681"><a href="#Resolver-681"><span class="linenos">681</span></a> <span class="p">)</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="nb">str</span><span class="p">]:</span>
|
||||
</span><span id="Resolver-682"><a href="#Resolver-682"><span class="linenos">682</span></a><span class="w"> </span><span class="sd">"""</span>
|
||||
</span><span id="Resolver-683"><a href="#Resolver-683"><span class="linenos">683</span></a><span class="sd"> Find all the unambiguous columns in sources.</span>
|
||||
</span><span id="Resolver-684"><a href="#Resolver-684"><span class="linenos">684</span></a>
|
||||
</span><span id="Resolver-685"><a href="#Resolver-685"><span class="linenos">685</span></a><span class="sd"> Args:</span>
|
||||
</span><span id="Resolver-686"><a href="#Resolver-686"><span class="linenos">686</span></a><span class="sd"> source_columns: Mapping of names to source columns.</span>
|
||||
</span><span id="Resolver-687"><a href="#Resolver-687"><span class="linenos">687</span></a>
|
||||
</span><span id="Resolver-688"><a href="#Resolver-688"><span class="linenos">688</span></a><span class="sd"> Returns:</span>
|
||||
</span><span id="Resolver-689"><a href="#Resolver-689"><span class="linenos">689</span></a><span class="sd"> Mapping of column name to source name.</span>
|
||||
</span><span id="Resolver-690"><a href="#Resolver-690"><span class="linenos">690</span></a><span class="sd"> """</span>
|
||||
</span><span id="Resolver-691"><a href="#Resolver-691"><span class="linenos">691</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">source_columns</span><span class="p">:</span>
|
||||
</span><span id="Resolver-692"><a href="#Resolver-692"><span class="linenos">692</span></a> <span class="k">return</span> <span class="p">{}</span>
|
||||
</span><span id="Resolver-693"><a href="#Resolver-693"><span class="linenos">693</span></a>
|
||||
</span><span id="Resolver-694"><a href="#Resolver-694"><span class="linenos">694</span></a> <span class="n">source_columns_pairs</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="n">source_columns</span><span class="o">.</span><span class="n">items</span><span class="p">())</span>
|
||||
</span><span id="Resolver-695"><a href="#Resolver-695"><span class="linenos">695</span></a>
|
||||
</span><span id="Resolver-696"><a href="#Resolver-696"><span class="linenos">696</span></a> <span class="n">first_table</span><span class="p">,</span> <span class="n">first_columns</span> <span class="o">=</span> <span class="n">source_columns_pairs</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
|
||||
</span><span id="Resolver-697"><a href="#Resolver-697"><span class="linenos">697</span></a> <span class="n">unambiguous_columns</span> <span class="o">=</span> <span class="p">{</span><span class="n">col</span><span class="p">:</span> <span class="n">first_table</span> <span class="k">for</span> <span class="n">col</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_find_unique_columns</span><span class="p">(</span><span class="n">first_columns</span><span class="p">)}</span>
|
||||
</span><span id="Resolver-698"><a href="#Resolver-698"><span class="linenos">698</span></a> <span class="n">all_columns</span> <span class="o">=</span> <span class="nb">set</span><span class="p">(</span><span class="n">unambiguous_columns</span><span class="p">)</span>
|
||||
</span><span id="Resolver-699"><a href="#Resolver-699"><span class="linenos">699</span></a>
|
||||
</span><span id="Resolver-700"><a href="#Resolver-700"><span class="linenos">700</span></a> <span class="k">for</span> <span class="n">table</span><span class="p">,</span> <span class="n">columns</span> <span class="ow">in</span> <span class="n">source_columns_pairs</span><span class="p">[</span><span class="mi">1</span><span class="p">:]:</span>
|
||||
</span><span id="Resolver-701"><a href="#Resolver-701"><span class="linenos">701</span></a> <span class="n">unique</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_find_unique_columns</span><span class="p">(</span><span class="n">columns</span><span class="p">)</span>
|
||||
</span><span id="Resolver-702"><a href="#Resolver-702"><span class="linenos">702</span></a> <span class="n">ambiguous</span> <span class="o">=</span> <span class="nb">set</span><span class="p">(</span><span class="n">all_columns</span><span class="p">)</span><span class="o">.</span><span class="n">intersection</span><span class="p">(</span><span class="n">unique</span><span class="p">)</span>
|
||||
</span><span id="Resolver-703"><a href="#Resolver-703"><span class="linenos">703</span></a> <span class="n">all_columns</span><span class="o">.</span><span class="n">update</span><span class="p">(</span><span class="n">columns</span><span class="p">)</span>
|
||||
</span><span id="Resolver-666"><a href="#Resolver-666"><span class="linenos">666</span></a> <span class="k">if</span> <span class="n">column_aliases</span><span class="p">:</span>
|
||||
</span><span id="Resolver-667"><a href="#Resolver-667"><span class="linenos">667</span></a> <span class="c1"># If the source's columns are aliased, their aliases shadow the corresponding column names.</span>
|
||||
</span><span id="Resolver-668"><a href="#Resolver-668"><span class="linenos">668</span></a> <span class="c1"># This can be expensive if there are lots of columns, so only do this if column_aliases exist.</span>
|
||||
</span><span id="Resolver-669"><a href="#Resolver-669"><span class="linenos">669</span></a> <span class="k">return</span> <span class="p">[</span>
|
||||
</span><span id="Resolver-670"><a href="#Resolver-670"><span class="linenos">670</span></a> <span class="n">alias</span> <span class="ow">or</span> <span class="n">name</span> <span class="k">for</span> <span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">alias</span><span class="p">)</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">zip_longest</span><span class="p">(</span><span class="n">columns</span><span class="p">,</span> <span class="n">column_aliases</span><span class="p">)</span>
|
||||
</span><span id="Resolver-671"><a href="#Resolver-671"><span class="linenos">671</span></a> <span class="p">]</span>
|
||||
</span><span id="Resolver-672"><a href="#Resolver-672"><span class="linenos">672</span></a> <span class="k">return</span> <span class="n">columns</span>
|
||||
</span><span id="Resolver-673"><a href="#Resolver-673"><span class="linenos">673</span></a>
|
||||
</span><span id="Resolver-674"><a href="#Resolver-674"><span class="linenos">674</span></a> <span class="k">def</span> <span class="nf">_get_all_source_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">t</span><span class="o">.</span><span class="n">List</span><span class="p">[</span><span class="nb">str</span><span class="p">]]:</span>
|
||||
</span><span id="Resolver-675"><a href="#Resolver-675"><span class="linenos">675</span></a> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
|
||||
</span><span id="Resolver-676"><a href="#Resolver-676"><span class="linenos">676</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> <span class="o">=</span> <span class="p">{</span>
|
||||
</span><span id="Resolver-677"><a href="#Resolver-677"><span class="linenos">677</span></a> <span class="n">source_name</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_source_columns</span><span class="p">(</span><span class="n">source_name</span><span class="p">)</span>
|
||||
</span><span id="Resolver-678"><a href="#Resolver-678"><span class="linenos">678</span></a> <span class="k">for</span> <span class="n">source_name</span><span class="p">,</span> <span class="n">source</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><span id="Resolver-679"><a href="#Resolver-679"><span class="linenos">679</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="o">.</span><span class="n">items</span><span class="p">(),</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">lateral_sources</span><span class="o">.</span><span class="n">items</span><span class="p">()</span>
|
||||
</span><span id="Resolver-680"><a href="#Resolver-680"><span class="linenos">680</span></a> <span class="p">)</span>
|
||||
</span><span id="Resolver-681"><a href="#Resolver-681"><span class="linenos">681</span></a> <span class="p">}</span>
|
||||
</span><span id="Resolver-682"><a href="#Resolver-682"><span class="linenos">682</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span>
|
||||
</span><span id="Resolver-683"><a href="#Resolver-683"><span class="linenos">683</span></a>
|
||||
</span><span id="Resolver-684"><a href="#Resolver-684"><span class="linenos">684</span></a> <span class="k">def</span> <span class="nf">_get_unambiguous_columns</span><span class="p">(</span>
|
||||
</span><span id="Resolver-685"><a href="#Resolver-685"><span class="linenos">685</span></a> <span class="bp">self</span><span class="p">,</span> <span class="n">source_columns</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">t</span><span class="o">.</span><span class="n">List</span><span class="p">[</span><span class="nb">str</span><span class="p">]]</span>
|
||||
</span><span id="Resolver-686"><a href="#Resolver-686"><span class="linenos">686</span></a> <span class="p">)</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="nb">str</span><span class="p">]:</span>
|
||||
</span><span id="Resolver-687"><a href="#Resolver-687"><span class="linenos">687</span></a><span class="w"> </span><span class="sd">"""</span>
|
||||
</span><span id="Resolver-688"><a href="#Resolver-688"><span class="linenos">688</span></a><span class="sd"> Find all the unambiguous columns in sources.</span>
|
||||
</span><span id="Resolver-689"><a href="#Resolver-689"><span class="linenos">689</span></a>
|
||||
</span><span id="Resolver-690"><a href="#Resolver-690"><span class="linenos">690</span></a><span class="sd"> Args:</span>
|
||||
</span><span id="Resolver-691"><a href="#Resolver-691"><span class="linenos">691</span></a><span class="sd"> source_columns: Mapping of names to source columns.</span>
|
||||
</span><span id="Resolver-692"><a href="#Resolver-692"><span class="linenos">692</span></a>
|
||||
</span><span id="Resolver-693"><a href="#Resolver-693"><span class="linenos">693</span></a><span class="sd"> Returns:</span>
|
||||
</span><span id="Resolver-694"><a href="#Resolver-694"><span class="linenos">694</span></a><span class="sd"> Mapping of column name to source name.</span>
|
||||
</span><span id="Resolver-695"><a href="#Resolver-695"><span class="linenos">695</span></a><span class="sd"> """</span>
|
||||
</span><span id="Resolver-696"><a href="#Resolver-696"><span class="linenos">696</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">source_columns</span><span class="p">:</span>
|
||||
</span><span id="Resolver-697"><a href="#Resolver-697"><span class="linenos">697</span></a> <span class="k">return</span> <span class="p">{}</span>
|
||||
</span><span id="Resolver-698"><a href="#Resolver-698"><span class="linenos">698</span></a>
|
||||
</span><span id="Resolver-699"><a href="#Resolver-699"><span class="linenos">699</span></a> <span class="n">source_columns_pairs</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="n">source_columns</span><span class="o">.</span><span class="n">items</span><span class="p">())</span>
|
||||
</span><span id="Resolver-700"><a href="#Resolver-700"><span class="linenos">700</span></a>
|
||||
</span><span id="Resolver-701"><a href="#Resolver-701"><span class="linenos">701</span></a> <span class="n">first_table</span><span class="p">,</span> <span class="n">first_columns</span> <span class="o">=</span> <span class="n">source_columns_pairs</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
|
||||
</span><span id="Resolver-702"><a href="#Resolver-702"><span class="linenos">702</span></a> <span class="n">unambiguous_columns</span> <span class="o">=</span> <span class="p">{</span><span class="n">col</span><span class="p">:</span> <span class="n">first_table</span> <span class="k">for</span> <span class="n">col</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_find_unique_columns</span><span class="p">(</span><span class="n">first_columns</span><span class="p">)}</span>
|
||||
</span><span id="Resolver-703"><a href="#Resolver-703"><span class="linenos">703</span></a> <span class="n">all_columns</span> <span class="o">=</span> <span class="nb">set</span><span class="p">(</span><span class="n">unambiguous_columns</span><span class="p">)</span>
|
||||
</span><span id="Resolver-704"><a href="#Resolver-704"><span class="linenos">704</span></a>
|
||||
</span><span id="Resolver-705"><a href="#Resolver-705"><span class="linenos">705</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">ambiguous</span><span class="p">:</span>
|
||||
</span><span id="Resolver-706"><a href="#Resolver-706"><span class="linenos">706</span></a> <span class="n">unambiguous_columns</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="n">column</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span>
|
||||
</span><span id="Resolver-707"><a href="#Resolver-707"><span class="linenos">707</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">unique</span><span class="o">.</span><span class="n">difference</span><span class="p">(</span><span class="n">ambiguous</span><span class="p">):</span>
|
||||
</span><span id="Resolver-708"><a href="#Resolver-708"><span class="linenos">708</span></a> <span class="n">unambiguous_columns</span><span class="p">[</span><span class="n">column</span><span class="p">]</span> <span class="o">=</span> <span class="n">table</span>
|
||||
</span><span id="Resolver-705"><a href="#Resolver-705"><span class="linenos">705</span></a> <span class="k">for</span> <span class="n">table</span><span class="p">,</span> <span class="n">columns</span> <span class="ow">in</span> <span class="n">source_columns_pairs</span><span class="p">[</span><span class="mi">1</span><span class="p">:]:</span>
|
||||
</span><span id="Resolver-706"><a href="#Resolver-706"><span class="linenos">706</span></a> <span class="n">unique</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_find_unique_columns</span><span class="p">(</span><span class="n">columns</span><span class="p">)</span>
|
||||
</span><span id="Resolver-707"><a href="#Resolver-707"><span class="linenos">707</span></a> <span class="n">ambiguous</span> <span class="o">=</span> <span class="nb">set</span><span class="p">(</span><span class="n">all_columns</span><span class="p">)</span><span class="o">.</span><span class="n">intersection</span><span class="p">(</span><span class="n">unique</span><span class="p">)</span>
|
||||
</span><span id="Resolver-708"><a href="#Resolver-708"><span class="linenos">708</span></a> <span class="n">all_columns</span><span class="o">.</span><span class="n">update</span><span class="p">(</span><span class="n">columns</span><span class="p">)</span>
|
||||
</span><span id="Resolver-709"><a href="#Resolver-709"><span class="linenos">709</span></a>
|
||||
</span><span id="Resolver-710"><a href="#Resolver-710"><span class="linenos">710</span></a> <span class="k">return</span> <span class="n">unambiguous_columns</span>
|
||||
</span><span id="Resolver-711"><a href="#Resolver-711"><span class="linenos">711</span></a>
|
||||
</span><span id="Resolver-712"><a href="#Resolver-712"><span class="linenos">712</span></a> <span class="nd">@staticmethod</span>
|
||||
</span><span id="Resolver-713"><a href="#Resolver-713"><span class="linenos">713</span></a> <span class="k">def</span> <span class="nf">_find_unique_columns</span><span class="p">(</span><span class="n">columns</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Collection</span><span class="p">[</span><span class="nb">str</span><span class="p">])</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">Set</span><span class="p">[</span><span class="nb">str</span><span class="p">]:</span>
|
||||
</span><span id="Resolver-714"><a href="#Resolver-714"><span class="linenos">714</span></a><span class="w"> </span><span class="sd">"""</span>
|
||||
</span><span id="Resolver-715"><a href="#Resolver-715"><span class="linenos">715</span></a><span class="sd"> Find the unique columns in a list of columns.</span>
|
||||
</span><span id="Resolver-710"><a href="#Resolver-710"><span class="linenos">710</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">ambiguous</span><span class="p">:</span>
|
||||
</span><span id="Resolver-711"><a href="#Resolver-711"><span class="linenos">711</span></a> <span class="n">unambiguous_columns</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="n">column</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span>
|
||||
</span><span id="Resolver-712"><a href="#Resolver-712"><span class="linenos">712</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">unique</span><span class="o">.</span><span class="n">difference</span><span class="p">(</span><span class="n">ambiguous</span><span class="p">):</span>
|
||||
</span><span id="Resolver-713"><a href="#Resolver-713"><span class="linenos">713</span></a> <span class="n">unambiguous_columns</span><span class="p">[</span><span class="n">column</span><span class="p">]</span> <span class="o">=</span> <span class="n">table</span>
|
||||
</span><span id="Resolver-714"><a href="#Resolver-714"><span class="linenos">714</span></a>
|
||||
</span><span id="Resolver-715"><a href="#Resolver-715"><span class="linenos">715</span></a> <span class="k">return</span> <span class="n">unambiguous_columns</span>
|
||||
</span><span id="Resolver-716"><a href="#Resolver-716"><span class="linenos">716</span></a>
|
||||
</span><span id="Resolver-717"><a href="#Resolver-717"><span class="linenos">717</span></a><span class="sd"> Example:</span>
|
||||
</span><span id="Resolver-718"><a href="#Resolver-718"><span class="linenos">718</span></a><span class="sd"> >>> sorted(Resolver._find_unique_columns(["a", "b", "b", "c"]))</span>
|
||||
</span><span id="Resolver-719"><a href="#Resolver-719"><span class="linenos">719</span></a><span class="sd"> ['a', 'c']</span>
|
||||
</span><span id="Resolver-720"><a href="#Resolver-720"><span class="linenos">720</span></a>
|
||||
</span><span id="Resolver-721"><a href="#Resolver-721"><span class="linenos">721</span></a><span class="sd"> This is necessary because duplicate column names are ambiguous.</span>
|
||||
</span><span id="Resolver-722"><a href="#Resolver-722"><span class="linenos">722</span></a><span class="sd"> """</span>
|
||||
</span><span id="Resolver-723"><a href="#Resolver-723"><span class="linenos">723</span></a> <span class="n">counts</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="nb">int</span><span class="p">]</span> <span class="o">=</span> <span class="p">{}</span>
|
||||
</span><span id="Resolver-724"><a href="#Resolver-724"><span class="linenos">724</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">columns</span><span class="p">:</span>
|
||||
</span><span id="Resolver-725"><a href="#Resolver-725"><span class="linenos">725</span></a> <span class="n">counts</span><span class="p">[</span><span class="n">column</span><span class="p">]</span> <span class="o">=</span> <span class="n">counts</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">column</span><span class="p">,</span> <span class="mi">0</span><span class="p">)</span> <span class="o">+</span> <span class="mi">1</span>
|
||||
</span><span id="Resolver-726"><a href="#Resolver-726"><span class="linenos">726</span></a> <span class="k">return</span> <span class="p">{</span><span class="n">column</span> <span class="k">for</span> <span class="n">column</span><span class="p">,</span> <span class="n">count</span> <span class="ow">in</span> <span class="n">counts</span><span class="o">.</span><span class="n">items</span><span class="p">()</span> <span class="k">if</span> <span class="n">count</span> <span class="o">==</span> <span class="mi">1</span><span class="p">}</span>
|
||||
</span><span id="Resolver-717"><a href="#Resolver-717"><span class="linenos">717</span></a> <span class="nd">@staticmethod</span>
|
||||
</span><span id="Resolver-718"><a href="#Resolver-718"><span class="linenos">718</span></a> <span class="k">def</span> <span class="nf">_find_unique_columns</span><span class="p">(</span><span class="n">columns</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Collection</span><span class="p">[</span><span class="nb">str</span><span class="p">])</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">Set</span><span class="p">[</span><span class="nb">str</span><span class="p">]:</span>
|
||||
</span><span id="Resolver-719"><a href="#Resolver-719"><span class="linenos">719</span></a><span class="w"> </span><span class="sd">"""</span>
|
||||
</span><span id="Resolver-720"><a href="#Resolver-720"><span class="linenos">720</span></a><span class="sd"> Find the unique columns in a list of columns.</span>
|
||||
</span><span id="Resolver-721"><a href="#Resolver-721"><span class="linenos">721</span></a>
|
||||
</span><span id="Resolver-722"><a href="#Resolver-722"><span class="linenos">722</span></a><span class="sd"> Example:</span>
|
||||
</span><span id="Resolver-723"><a href="#Resolver-723"><span class="linenos">723</span></a><span class="sd"> >>> sorted(Resolver._find_unique_columns(["a", "b", "b", "c"]))</span>
|
||||
</span><span id="Resolver-724"><a href="#Resolver-724"><span class="linenos">724</span></a><span class="sd"> ['a', 'c']</span>
|
||||
</span><span id="Resolver-725"><a href="#Resolver-725"><span class="linenos">725</span></a>
|
||||
</span><span id="Resolver-726"><a href="#Resolver-726"><span class="linenos">726</span></a><span class="sd"> This is necessary because duplicate column names are ambiguous.</span>
|
||||
</span><span id="Resolver-727"><a href="#Resolver-727"><span class="linenos">727</span></a><span class="sd"> """</span>
|
||||
</span><span id="Resolver-728"><a href="#Resolver-728"><span class="linenos">728</span></a> <span class="n">counts</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="nb">int</span><span class="p">]</span> <span class="o">=</span> <span class="p">{}</span>
|
||||
</span><span id="Resolver-729"><a href="#Resolver-729"><span class="linenos">729</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">columns</span><span class="p">:</span>
|
||||
</span><span id="Resolver-730"><a href="#Resolver-730"><span class="linenos">730</span></a> <span class="n">counts</span><span class="p">[</span><span class="n">column</span><span class="p">]</span> <span class="o">=</span> <span class="n">counts</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">column</span><span class="p">,</span> <span class="mi">0</span><span class="p">)</span> <span class="o">+</span> <span class="mi">1</span>
|
||||
</span><span id="Resolver-731"><a href="#Resolver-731"><span class="linenos">731</span></a> <span class="k">return</span> <span class="p">{</span><span class="n">column</span> <span class="k">for</span> <span class="n">column</span><span class="p">,</span> <span class="n">count</span> <span class="ow">in</span> <span class="n">counts</span><span class="o">.</span><span class="n">items</span><span class="p">()</span> <span class="k">if</span> <span class="n">count</span> <span class="o">==</span> <span class="mi">1</span><span class="p">}</span>
|
||||
</span></pre></div>
|
||||
|
||||
|
||||
|
|
@ -1471,8 +1481,13 @@ know what you're doing!</li>
|
|||
</span><span id="Resolver.get_source_columns-663"><a href="#Resolver.get_source_columns-663"><span class="linenos">663</span></a> <span class="k">else</span><span class="p">:</span>
|
||||
</span><span id="Resolver.get_source_columns-664"><a href="#Resolver.get_source_columns-664"><span class="linenos">664</span></a> <span class="n">column_aliases</span> <span class="o">=</span> <span class="p">[]</span>
|
||||
</span><span id="Resolver.get_source_columns-665"><a href="#Resolver.get_source_columns-665"><span class="linenos">665</span></a>
|
||||
</span><span id="Resolver.get_source_columns-666"><a href="#Resolver.get_source_columns-666"><span class="linenos">666</span></a> <span class="c1"># If the source's columns are aliased, their aliases shadow the corresponding column names</span>
|
||||
</span><span id="Resolver.get_source_columns-667"><a href="#Resolver.get_source_columns-667"><span class="linenos">667</span></a> <span class="k">return</span> <span class="p">[</span><span class="n">alias</span> <span class="ow">or</span> <span class="n">name</span> <span class="k">for</span> <span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">alias</span><span class="p">)</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">zip_longest</span><span class="p">(</span><span class="n">columns</span><span class="p">,</span> <span class="n">column_aliases</span><span class="p">)]</span>
|
||||
</span><span id="Resolver.get_source_columns-666"><a href="#Resolver.get_source_columns-666"><span class="linenos">666</span></a> <span class="k">if</span> <span class="n">column_aliases</span><span class="p">:</span>
|
||||
</span><span id="Resolver.get_source_columns-667"><a href="#Resolver.get_source_columns-667"><span class="linenos">667</span></a> <span class="c1"># If the source's columns are aliased, their aliases shadow the corresponding column names.</span>
|
||||
</span><span id="Resolver.get_source_columns-668"><a href="#Resolver.get_source_columns-668"><span class="linenos">668</span></a> <span class="c1"># This can be expensive if there are lots of columns, so only do this if column_aliases exist.</span>
|
||||
</span><span id="Resolver.get_source_columns-669"><a href="#Resolver.get_source_columns-669"><span class="linenos">669</span></a> <span class="k">return</span> <span class="p">[</span>
|
||||
</span><span id="Resolver.get_source_columns-670"><a href="#Resolver.get_source_columns-670"><span class="linenos">670</span></a> <span class="n">alias</span> <span class="ow">or</span> <span class="n">name</span> <span class="k">for</span> <span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">alias</span><span class="p">)</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">zip_longest</span><span class="p">(</span><span class="n">columns</span><span class="p">,</span> <span class="n">column_aliases</span><span class="p">)</span>
|
||||
</span><span id="Resolver.get_source_columns-671"><a href="#Resolver.get_source_columns-671"><span class="linenos">671</span></a> <span class="p">]</span>
|
||||
</span><span id="Resolver.get_source_columns-672"><a href="#Resolver.get_source_columns-672"><span class="linenos">672</span></a> <span class="k">return</span> <span class="n">columns</span>
|
||||
</span></pre></div>
|
||||
|
||||
|
||||
|
|
|
|||
|
|
@ -2546,7 +2546,7 @@ prefix are statically known.</p>
|
|||
<div class="attr variable">
|
||||
<span class="name">DATETRUNC_COMPARISONS</span> =
|
||||
<input id="DATETRUNC_COMPARISONS-view-value" class="view-value-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1">
|
||||
<label class="view-value-button pdoc-button" for="DATETRUNC_COMPARISONS-view-value"></label><span class="default_value">{<class '<a href="../expressions.html#LTE">sqlglot.expressions.LTE</a>'>, <class '<a href="../expressions.html#GT">sqlglot.expressions.GT</a>'>, <class '<a href="../expressions.html#EQ">sqlglot.expressions.EQ</a>'>, <class '<a href="../expressions.html#LT">sqlglot.expressions.LT</a>'>, <class '<a href="../expressions.html#NEQ">sqlglot.expressions.NEQ</a>'>, <class '<a href="../expressions.html#In">sqlglot.expressions.In</a>'>, <class '<a href="../expressions.html#GTE">sqlglot.expressions.GTE</a>'>}</span>
|
||||
<label class="view-value-button pdoc-button" for="DATETRUNC_COMPARISONS-view-value"></label><span class="default_value">{<class '<a href="../expressions.html#GTE">sqlglot.expressions.GTE</a>'>, <class '<a href="../expressions.html#LTE">sqlglot.expressions.LTE</a>'>, <class '<a href="../expressions.html#EQ">sqlglot.expressions.EQ</a>'>, <class '<a href="../expressions.html#GT">sqlglot.expressions.GT</a>'>, <class '<a href="../expressions.html#LT">sqlglot.expressions.LT</a>'>, <class '<a href="../expressions.html#In">sqlglot.expressions.In</a>'>, <class '<a href="../expressions.html#NEQ">sqlglot.expressions.NEQ</a>'>}</span>
|
||||
|
||||
|
||||
</div>
|
||||
|
|
@ -2626,7 +2626,7 @@ prefix are statically known.</p>
|
|||
<section id="JOINS">
|
||||
<div class="attr variable">
|
||||
<span class="name">JOINS</span> =
|
||||
<span class="default_value">{('', ''), ('', 'INNER'), ('RIGHT', ''), ('RIGHT', 'OUTER')}</span>
|
||||
<span class="default_value">{('', 'INNER'), ('RIGHT', 'OUTER'), ('RIGHT', ''), ('', '')}</span>
|
||||
|
||||
|
||||
</div>
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue