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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 `query` crate."><title>query - 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="../crates.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 crate"><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="#">Crate query</a></h2></rustdoc-topbar><nav class="sidebar"><div class="sidebar-crate"><h2><a href="../query/index.html">query</a><span class="version">1.3.0-alpha.1</span></h2></div><div class="sidebar-elems"><ul class="block"><li><a id="all-types" href="all.html">All Items</a></li></ul><section id="rustdoc-toc"><h3><a href="#reexports">Crate Items</a></h3><ul class="block"><li><a href="#reexports" title="Re-exports">Re-exports</a></li><li><a href="#modules" title="Modules">Modules</a></li><li><a href="#macros" title="Macros">Macros</a></li><li><a href="#functions" title="Functions">Functions</a></li></ul></section><div id="rustdoc-modnav"></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"><h1>Crate <span>query</span>&nbsp;<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/lib.rs.html#15-52">Source</a> </span></div><h2 id="reexports" class="section-header">Re-exports<a href="#reexports" class="anchor">§</a></h2><dl class="item-table reexports"><dt id="reexport.DfContextProviderAdapter"><code>pub use crate::datafusion::<a class="struct" href="datafusion/struct.DfContextProviderAdapter.html" title="struct query::datafusion::DfContextProviderAdapter">DfContextProviderAdapter</a>;</code></dt><dt id="reexport.QueryEngine"><code>pub use crate::query_engine::<a class="trait" href="query_engine/trait.QueryEngine.html" title="trait query::query_engine::QueryEngine">QueryEngine</a>;</code></dt><dt id="reexport.QueryEngineContext"><code>pub use crate::query_engine::<a class="struct" href="query_engine/struct.QueryEngineContext.html" title="struct query::query_engine::QueryEngineContext">QueryEngineContext</a>;</code></dt><dt id="reexport.QueryEngineFactory"><code>pub use crate::query_engine::<a class="struct" href="query_engine/struct.QueryEngineFactory.html" title="struct query::query_engine::QueryEngineFactory">QueryEngineFactory</a>;</code></dt><dt id="reexport.QueryEngineRef"><code>pub use crate::query_engine::<a class="type" href="query_engine/type.QueryEngineRef.html" title="type query::query_engine::QueryEngineRef">QueryEngineRef</a>;</code></dt></dl><h2 id="modules" class="section-header">Modules<a href="#modules" class="anchor">§</a></h2><dl class="item-table"><dt><a class="mod" href="analyze/index.html" title="mod query::analyze">analyze</a><span title="Restricted Visibility">&nbsp;🔒</span> </dt><dd>Customized <code>ANALYZE</code> plan that aware of <a href="dist_plan/struct.MergeScanExec.html" title="struct query::dist_plan::MergeScanExec">MergeScanExec</a>.</dd><dt><a class="mod" href="datafusion/index.html" title="mod query::datafusion">datafusion</a></dt><dd>Planner, QueryEngine implementations based on DataFusion.</dd><dt><a class="mod" href="dist_plan/index.html" title="mod query::dist_plan">dist_<wbr>plan</a></dt><dt><a class="mod" href="dummy_catalog/index.html" title="mod query::dummy_catalog">dummy_<wbr>catalog</a></dt><dd>Dummy catalog for region server.</dd><dt><a class="mod" href="error/index.html" title="mod query::error">error</a></dt><dt><a class="mod" href="executor/index.html" title="mod query::executor">executor</a></dt><dt><a class="mod" href="log_query/index.html" title="mod query::log_query">log_<wbr>query</a></dt><dt><a class="mod" href="metrics/index.html" title="mod query::metrics">metrics</a></dt><dt><a class="mod" href="optimizer/index.html" title="mod query::optimizer">optimizer</a></dt><dt><a class="mod" href="options/index.html" title="mod query::options">options</a></dt><dt><a class="mod" href="parser/index.html" title="mod query::parser">parser</a></dt><dt><a class="mod" href="part_sort/index.html" title="mod query::part_sort">part_<wbr>sort</a><span title="Restricted Visibility">&nbsp;🔒</span> </dt><dd>Module for sorting input data within each [<code>PartitionRange</code>].</dd><dt><a class="mod" href="physical_wrapper/index.html" title="mod query::physical_wrapper">physical_<wbr>wrapper</a></dt><dt><a class="mod" href="plan/index.html" title="mod query::plan">plan</a></dt><dt><a class="mod" href="planner/index.html" title="mod query::planner">planner</a></dt><dt><a class="mod" href="promql/index.html" title="mod query::promql">promql</a></dt><dt><a class="mod" href="query_engine/index.html" title="mod query::query_engine">query_<wbr>engine</a></dt><dt><a class="mod" href="range_select/index.html" title="mod query::range_select">range_<wbr>select</a><span title="Restricted Visibility">&nbsp;🔒</span> </dt><dt><a class="mod" href="region_query/index.html" title="mod query::region_query">region_<wbr>query</a></dt><dt><a class="mod" href="sql/index.html" title="mod query::sql">sql</a></dt><dt><a class="mod" href="window_sort/index.html" title="mod query::window_sort">window_<wbr>sort</a><span title="Restricted Visibility">&nbsp;🔒</span> </dt><dd>A physical plan for window sort(Which is sorting multiple sorted ranges according to input <code>PartitionRange</code>).</dd></dl><h2 id="macros" class="section-header">Macros<a href="#macros" class="anchor">§</a></h2><dl class="item-table"><dt><a class="macro" href="macro.array_iter_helper.html" title="macro query::array_iter_helper">array_<wbr>iter_<wbr>helper</a></dt><dd>Get an iterator from a primitive array.</dd><dt><a class="macro" href="macro.downcast_ts_array.html" title="macro query::downcast_ts_array">downcast_<wbr>ts_<wbr>array</a></dt><dd>Downcast a temporal array to a specific type</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.analyze_plan_metrics_to_json_value.html" title="fn query::analyze_plan_metrics_to_json_value">analyze_<wbr>plan_<wbr>metrics_<wbr>to_<wbr>json_<wbr>value</a></dt><dd>Returns verbose analyze metrics as JSON values using the same <code>JsonMetrics</code> shape
as <code>EXPLAIN ANALYZE VERBOSE FORMAT JSON</code>.</dd><dt><a class="fn" href="fn.dist_analyze_output_schema.html" title="fn query::dist_analyze_output_schema">dist_<wbr>analyze_<wbr>output_<wbr>schema</a></dt><dd>Fixed output schema of <a href="analyze/struct.DistAnalyzeExec.html" title="struct query::analyze::DistAnalyzeExec"><code>DistAnalyzeExec</code></a>, for <code>Describe</code> handlers:
execution rewrites the plan in <code>optimize_physical_plan</code>, so this schema
differs from the logical <code>Analyze</code> plan’s.</dd></dl><script type="text/json" id="notable-traits-data">{"<Arc<S> as Service<Request>>::Future":"<h3>Notable traits for <code><a class=\"struct\" href=\"https://doc.rust-lang.org/nightly/alloc/sync/struct.Arc.html\" title=\"struct alloc::sync::Arc\">Arc</a>&lt;<a class=\"struct\" href=\"https://doc.rust-lang.org/nightly/std/fs/struct.File.html\" title=\"struct std::fs::File\">File</a>&gt;</code></h3><pre><code><div class=\"where\">impl <a class=\"trait\" href=\"https://doc.rust-lang.org/nightly/std/io/trait.Read.html\" title=\"trait std::io::Read\">Read</a> for <a class=\"struct\" href=\"https://doc.rust-lang.org/nightly/alloc/sync/struct.Arc.html\" title=\"struct alloc::sync::Arc\">Arc</a>&lt;<a class=\"struct\" href=\"https://doc.rust-lang.org/nightly/std/fs/struct.File.html\" title=\"struct std::fs::File\">File</a>&gt;</div><div class=\"where\">impl <a class=\"trait\" href=\"https://doc.rust-lang.org/nightly/std/io/trait.Write.html\" title=\"trait std::io::Write\">Write</a> for <a class=\"struct\" href=\"https://doc.rust-lang.org/nightly/alloc/sync/struct.Arc.html\" title=\"struct alloc::sync::Arc\">Arc</a>&lt;<a class=\"struct\" href=\"https://doc.rust-lang.org/nightly/std/fs/struct.File.html\" title=\"struct std::fs::File\">File</a>&gt;</div>","<Arc<W> as MakeWriter<'a>>::Writer":"<h3>Notable traits for <code><a class=\"struct\" href=\"https://doc.rust-lang.org/nightly/alloc/sync/struct.Arc.html\" title=\"struct alloc::sync::Arc\">Arc</a>&lt;<a class=\"struct\" href=\"https://doc.rust-lang.org/nightly/std/fs/struct.File.html\" title=\"struct std::fs::File\">File</a>&gt;</code></h3><pre><code><div class=\"where\">impl <a class=\"trait\" href=\"https://doc.rust-lang.org/nightly/std/io/trait.Read.html\" title=\"trait std::io::Read\">Read</a> for <a class=\"struct\" href=\"https://doc.rust-lang.org/nightly/alloc/sync/struct.Arc.html\" title=\"struct alloc::sync::Arc\">Arc</a>&lt;<a class=\"struct\" href=\"https://doc.rust-lang.org/nightly/std/fs/struct.File.html\" title=\"struct std::fs::File\">File</a>&gt;</div><div class=\"where\">impl <a class=\"trait\" href=\"https://doc.rust-lang.org/nightly/std/io/trait.Write.html\" title=\"trait std::io::Write\">Write</a> for <a class=\"struct\" href=\"https://doc.rust-lang.org/nightly/alloc/sync/struct.Arc.html\" title=\"struct alloc::sync::Arc\">Arc</a>&lt;<a class=\"struct\" href=\"https://doc.rust-lang.org/nightly/std/fs/struct.File.html\" title=\"struct std::fs::File\">File</a>&gt;</div>"}</script></section></div></main></body></html>
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