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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="API documentation for the Rust `utils` mod in crate `query`."><title>query::dist_plan::analyzer::utils - Rust</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.ttf.woff2,FiraSans-Italic-81dc35de.woff2,FiraSans-Regular-0fe48ade.woff2,FiraSans-MediumItalic-ccf7e434.woff2,FiraSans-Medium-e1aa3f0a.woff2,SourceCodePro-Regular-8badfe75.ttf.woff2,SourceCodePro-Semibold-aa29a496.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2"href="../../../../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../../../../static.files/normalize-9960930a.css"><link rel="stylesheet" href="../../../../static.files/rustdoc-17e0aaed.css"><meta name="rustdoc-vars" data-root-path="../../../../" data-static-root-path="../../../../static.files/" data-current-crate="query" data-themes="" data-resource-suffix="" data-rustdoc-version="1.96.0-nightly (ac7f9ec7d 2026-03-20)" data-channel="nightly" data-search-js="search-63369b7b.js" data-stringdex-js="stringdex-2da4960a.js" data-settings-js="settings-170eb4bf.js" ><script src="../../../../static.files/storage-41dd4d93.js"></script><script defer src="../sidebar-items.js"></script><script defer src="../../../../static.files/main-5013f961.js"></script><noscript><link rel="stylesheet" href="../../../../static.files/noscript-f7c3ffd8.css"></noscript><link rel="alternate icon" type="image/png" href="../../../../static.files/favicon-32x32-eab170b8.png"><link rel="icon" type="image/svg+xml" href="../../../../static.files/favicon-044be391.svg"></head><body class="rustdoc mod"><a class="skip-main-content" href="#main-content">Skip to main content</a><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><rustdoc-topbar><h2><a href="#">Module utils</a></h2></rustdoc-topbar><nav class="sidebar"><div class="sidebar-crate"><h2><a href="../../../../query/index.html">query</a><span class="version">1.0.0</span></h2></div><div class="sidebar-elems"><section id="rustdoc-toc"><h2 class="location"><a href="#">Module utils</a></h2><h3><a href="#structs">Module Items</a></h3><ul class="block"><li><a href="#structs" title="Structs">Structs</a></li><li><a href="#functions" title="Functions">Functions</a></li><li><a href="#types" title="Type Aliases">Type Aliases</a></li></ul></section><div id="rustdoc-modnav"><h2><a href="../index.html">In query::<wbr>dist_<wbr>plan::<wbr>analyzer</a></h2></div></div></nav><div class="sidebar-resizer" title="Drag to resize sidebar"></div><main><div class="width-limiter"><section id="main-content" class="content" tabindex="-1"><div class="main-heading"><div class="rustdoc-breadcrumbs"><a href="../../../index.html">query</a>::<wbr><a href="../../index.html">dist_plan</a>::<wbr><a href="../index.html">analyzer</a></div><h1>Module <span>utils</span> <button id="copy-path" title="Copy item path to clipboard">Copy item path</button></h1><rustdoc-toolbar></rustdoc-toolbar><span class="sub-heading"><a class="src" href="../../../../src/query/dist_plan/analyzer/utils.rs.html#15-947">Source</a> </span></div><h2 id="structs" class="section-header">Structs<a href="#structs" class="anchor">§</a></h2><dl class="item-table"><dt><a class="struct" href="struct.AliasLayer.html" title="struct query::dist_plan::analyzer::utils::AliasLayer">Alias<wbr>Layer</a><span title="Restricted Visibility"> 🔒</span> </dt><dt><a class="struct" href="struct.PatchOptimizerContext.html" title="struct query::dist_plan::analyzer::utils::PatchOptimizerContext">Patch<wbr>Optimizer<wbr>Context</a><span title="Restricted Visibility"> 🔒</span> </dt><dd>The <code>ConstEvaluator</code> in <code>SimplifyExpressions</code> might evaluate some UDFs early in the
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planning stage, by executing them directly. For example, the <code>database()</code> function.
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So the <code>ConfigOptions</code> here (which is set from the session context) should be present
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in the UDF’s <code>ScalarFunctionArgs</code>. However, the default implementation in DataFusion
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seems to lost track on it: the <code>ConfigOptions</code> is recreated with its default values again.
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So we create a custom <code>OptimizerConfig</code> with the desired <code>ConfigOptions</code>
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to walk around the issue.
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TODO(LFC): Maybe use DataFusion’s <code>OptimizerContext</code> again
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once https://github.com/apache/datafusion/pull/17742 is merged.</dd><dt><a class="struct" href="struct.PlanTreeExpressionSimplifier.html" title="struct query::dist_plan::analyzer::utils::PlanTreeExpressionSimplifier">Plan<wbr>Tree<wbr>Expression<wbr>Simplifier</a><span title="Restricted Visibility"> 🔒</span> </dt><dd>Simplify all expressions recursively in the plan tree
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which keeping the output schema unchanged</dd></dl><h2 id="functions" class="section-header">Functions<a href="#functions" class="anchor">§</a></h2><dl class="item-table"><dt><a class="fn" href="fn.aliased_columns_for.html" title="fn query::dist_plan::analyzer::utils::aliased_columns_for">aliased_<wbr>columns_<wbr>for</a></dt><dd>Return all the aliased columns(at aliased node) for the given original columns(at original node)</dd><dt><a class="fn" href="fn.aliased_columns_for_inner.html" title="fn query::dist_plan::analyzer::utils::aliased_columns_for_inner">aliased_<wbr>columns_<wbr>for_<wbr>inner</a><span title="Restricted Visibility"> 🔒</span> </dt><dt><a class="fn" href="fn.get_alias_layer_from_exprs.html" title="fn query::dist_plan::analyzer::utils::get_alias_layer_from_exprs">get_<wbr>alias_<wbr>layer_<wbr>from_<wbr>exprs</a><span title="Restricted Visibility"> 🔒</span> </dt><dt><a class="fn" href="fn.get_alias_layer_from_node.html" title="fn query::dist_plan::analyzer::utils::get_alias_layer_from_node">get_<wbr>alias_<wbr>layer_<wbr>from_<wbr>node</a><span title="Restricted Visibility"> 🔒</span> </dt><dd>Return a mapping of original column to all the aliased columns in current node of the plan
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TODO(discord9): also support merge scan node</dd><dt><a class="fn" href="fn.get_alias_original_column.html" title="fn query::dist_plan::analyzer::utils::get_alias_original_column">get_<wbr>alias_<wbr>original_<wbr>column</a><span title="Restricted Visibility"> 🔒</span> </dt><dt><a class="fn" href="fn.original_column_for.html" title="fn query::dist_plan::analyzer::utils::original_column_for">original_<wbr>column_<wbr>for</a></dt><dd>Return all the original columns(at original node) for the given aliased columns at the aliased node</dd><dt><a class="fn" href="fn.original_column_for_inner.html" title="fn query::dist_plan::analyzer::utils::original_column_for_inner">original_<wbr>column_<wbr>for_<wbr>inner</a><span title="Restricted Visibility"> 🔒</span> </dt><dt><a class="fn" href="fn.patch_batch_timezone.html" title="fn query::dist_plan::analyzer::utils::patch_batch_timezone">patch_<wbr>batch_<wbr>timezone</a></dt><dd>A patch for substrait simply throw timezone away, so when decoding, if columns have different timezone then expected schema, use expected schema’s timezone</dd><dt><a class="fn" href="fn.rewrite_column.html" title="fn query::dist_plan::analyzer::utils::rewrite_column">rewrite_<wbr>column</a><span title="Restricted Visibility"> 🔒</span> </dt><dt><a class="fn" href="fn.rewrite_merge_sort_exprs.html" title="fn query::dist_plan::analyzer::utils::rewrite_merge_sort_exprs">rewrite_<wbr>merge_<wbr>sort_<wbr>exprs</a></dt><dd>Rewrite the expressions of the given merge sort plan from original columns(at merge sort’s input plan) to aliased columns at the given aliased node</dd></dl><h2 id="types" class="section-header">Type Aliases<a href="#types" class="anchor">§</a></h2><dl class="item-table"><dt><a class="type" href="type.AliasMapping.html" title="type query::dist_plan::analyzer::utils::AliasMapping">Alias<wbr>Mapping</a></dt><dd>Mapping of original column in table to all the alias at current node</dd></dl></section></div></main></body></html> |