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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="Use regex to filter out some MySQL federated components’ emitted statements. Inspired by Databend’s “mysql_federated.rs”."><title>servers::mysql::federated - 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-1ed95124.css"><meta name="rustdoc-vars" data-root-path="../../../" data-static-root-path="../../../static.files/" data-current-crate="servers" data-themes="" data-resource-suffix="" data-rustdoc-version="1.98.1 (48a229cea 2026-09-01)" data-channel="1.98.1" data-search-js="search-9944d736.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-417ebf0a.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 federated</a></h2></rustdoc-topbar><nav class="sidebar"><div class="sidebar-crate"><h2><a href="../../../servers/index.html">servers</a><span class="version">1.4.0-alpha.0</span></h2></div><div class="sidebar-elems"><section id="rustdoc-toc"><h2 class="location"><a href="#">Module federated</a></h2><h3><a href="#constants">Module Items</a></h3><ul class="block"><li><a href="#constants" title="Constants">Constants</a></li><li><a href="#statics" title="Statics">Statics</a></li><li><a href="#functions" title="Functions">Functions</a></li></ul></section><div id="rustdoc-modnav"><h2><a href="../index.html">In servers::<wbr>mysql</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">servers</a>::<wbr><a href="../index.html">mysql</a></div><h1>Module <span>federated</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/servers/mysql/federated.rs.html#15-962">Source</a> </span></div><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Use regex to filter out some MySQL federated components’ emitted statements.
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Inspired by Databend’s “<a href="https://github.com/datafuselabs/databend/blob/ac706bf65845e6895141c96c0a10bad6fdc2d367/src/query/service/src/servers/mysql/mysql_federated.rs">mysql_federated.rs</a>”.</p>
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</div></details><h2 id="constants" class="section-header">Constants<a href="#constants" class="anchor">§</a></h2><dl class="item-table"><dt><a class="constant" href="constant.OTHER_LEADING_KEYWORDS.html" title="constant servers::mysql::federated::OTHER_LEADING_KEYWORDS">OTHER_<wbr>LEADING_<wbr>KEYWORDS</a><span title="Restricted Visibility"> 🔒</span> </dt><dd>The statement keywords that only <a href="static.OTHER_NOT_SUPPORTED_STMT.html" title="static servers::mysql::federated::OTHER_NOT_SUPPORTED_STMT"><code>OTHER_NOT_SUPPORTED_STMT</code></a> matches. <code>SELECT</code> and
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<code>SHOW</code> are dispatched separately below.</dd><dt><a class="constant" href="constant.VARIABLES_SCOPE.html" title="constant servers::mysql::federated::VARIABLES_SCOPE">VARIABLES_<wbr>SCOPE</a><span title="Restricted Visibility"> 🔒</span> </dt><dd>Matches the optional <code>GLOBAL</code>/<code>SESSION</code>/<code>LOCAL</code> scope MySQL accepts before <code>VARIABLES</code>.</dd></dl><h2 id="statics" class="section-header">Statics<a href="#statics" class="anchor">§</a></h2><dl class="item-table"><dt><a class="static" href="static.OTHER_NOT_SUPPORTED_STMT.html" title="static servers::mysql::federated::OTHER_NOT_SUPPORTED_STMT">OTHER_<wbr>NOT_<wbr>SUPPORTED_<wbr>STMT</a><span title="Restricted Visibility"> 🔒</span> </dt><dt><a class="static" href="static.SELECT_TIME_DIFF_FUNC_PATTERN.html" title="static servers::mysql::federated::SELECT_TIME_DIFF_FUNC_PATTERN">SELECT_<wbr>TIME_<wbr>DIFF_<wbr>FUNC_<wbr>PATTERN</a><span title="Restricted Visibility"> 🔒</span> </dt><dt><a class="static" href="static.SELECT_USER_OR_VAR_PATTERN.html" title="static servers::mysql::federated::SELECT_USER_OR_VAR_PATTERN">SELECT_<wbr>USER_<wbr>OR_<wbr>VAR_<wbr>PATTERN</a><span title="Restricted Visibility"> 🔒</span> </dt><dt><a class="static" href="static.SELECT_VAR_PATTERN.html" title="static servers::mysql::federated::SELECT_VAR_PATTERN">SELECT_<wbr>VAR_<wbr>PATTERN</a><span title="Restricted Visibility"> 🔒</span> </dt><dt><a class="static" href="static.SHOW_LOWER_CASE_PATTERN.html" title="static servers::mysql::federated::SHOW_LOWER_CASE_PATTERN">SHOW_<wbr>LOWER_<wbr>CASE_<wbr>PATTERN</a><span title="Restricted Visibility"> 🔒</span> </dt><dt><a class="static" href="static.SHOW_SQL_MODE_PATTERN.html" title="static servers::mysql::federated::SHOW_SQL_MODE_PATTERN">SHOW_<wbr>SQL_<wbr>MODE_<wbr>PATTERN</a><span title="Restricted Visibility"> 🔒</span> </dt><dt><a class="static" href="static.SHOW_VARIABLES_LIKE_PATTERN.html" title="static servers::mysql::federated::SHOW_VARIABLES_LIKE_PATTERN">SHOW_<wbr>VARIABLES_<wbr>LIKE_<wbr>PATTERN</a><span title="Restricted Visibility"> 🔒</span> </dt><dt><a class="static" href="static.SHOW_WARNINGS_PATTERN.html" title="static servers::mysql::federated::SHOW_WARNINGS_PATTERN">SHOW_<wbr>WARNINGS_<wbr>PATTERN</a><span title="Restricted Visibility"> 🔒</span> </dt><dt><a class="static" href="static.VAR_VALUES.html" title="static servers::mysql::federated::VAR_VALUES">VAR_<wbr>VALUES</a><span title="Restricted Visibility"> 🔒</span> </dt></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.check.html" title="fn servers::mysql::federated::check">check</a><span title="Restricted Visibility"> 🔒</span> </dt><dt><a class="fn" href="fn.check_others.html" title="fn servers::mysql::federated::check_others">check_<wbr>others</a><span title="Restricted Visibility"> 🔒</span> </dt><dt><a class="fn" href="fn.check_select_user_or_var.html" title="fn servers::mysql::federated::check_select_user_or_var">check_<wbr>select_<wbr>user_<wbr>or_<wbr>var</a><span title="Restricted Visibility"> 🔒</span> </dt><dt><a class="fn" href="fn.check_select_variable.html" title="fn servers::mysql::federated::check_select_variable">check_<wbr>select_<wbr>variable</a><span title="Restricted Visibility"> 🔒</span> </dt><dt><a class="fn" href="fn.check_show_variables.html" title="fn servers::mysql::federated::check_show_variables">check_<wbr>show_<wbr>variables</a><span title="Restricted Visibility"> 🔒</span> </dt><dt><a class="fn" href="fn.check_show_warnings.html" title="fn servers::mysql::federated::check_show_warnings">check_<wbr>show_<wbr>warnings</a><span title="Restricted Visibility"> 🔒</span> </dt><dt><a class="fn" href="fn.has_trailing_statement.html" title="fn servers::mysql::federated::has_trailing_statement">has_<wbr>trailing_<wbr>statement</a><span title="Restricted Visibility"> 🔒</span> </dt><dd>Returns true if another statement follows the first statement-level <code>;</code>.</dd><dt><a class="fn" href="fn.leading_keyword.html" title="fn servers::mysql::federated::leading_keyword">leading_<wbr>keyword</a><span title="Restricted Visibility"> 🔒</span> </dt><dd>Returns the leading run of ASCII letters, which is the statement keyword for everything
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this module matches.</dd><dt><a class="fn" href="fn.line_comment_end.html" title="fn servers::mysql::federated::line_comment_end">line_<wbr>comment_<wbr>end</a><span title="Restricted Visibility"> 🔒</span> </dt><dd>Returns the index just past the line terminator at or after <code>from</code>.</dd><dt><a class="fn" href="fn.quoted_end.html" title="fn servers::mysql::federated::quoted_end">quoted_<wbr>end</a><span title="Restricted Visibility"> 🔒</span> </dt><dd>Returns the index just past the closing <code>quote</code> of the literal starting at <code>start</code>.</dd><dt><a class="fn" href="fn.select_function.html" title="fn servers::mysql::federated::select_function">select_<wbr>function</a><span title="Restricted Visibility"> 🔒</span> </dt><dt><a class="fn" href="fn.select_variable.html" title="fn servers::mysql::federated::select_variable">select_<wbr>variable</a><span title="Restricted Visibility"> 🔒</span> </dt><dt><a class="fn" href="fn.show_variables.html" title="fn servers::mysql::federated::show_variables">show_<wbr>variables</a><span title="Restricted Visibility"> 🔒</span> </dt><dt><a class="fn" href="fn.show_warnings.html" title="fn servers::mysql::federated::show_warnings">show_<wbr>warnings</a><span title="Restricted Visibility"> 🔒</span> </dt><dd>Build SHOW WARNINGS result from session’s warnings</dd><dt><a class="fn" href="fn.strip_leading_comments.html" title="fn servers::mysql::federated::strip_leading_comments">strip_<wbr>leading_<wbr>comments</a><span title="Restricted Visibility"> 🔒</span> </dt><dd>Strips leading whitespace and SQL comments.</dd></dl></section></div></main></body></html> |