analytics/Plausible.Stats.SQL.Fragments.html
2024-08-16 09:00:13 +00:00

749 lines
26 KiB
HTML

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="x-ua-compatible" content="ie=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta name="generator" content="ExDoc v0.31.1">
<meta name="project" content="Plausible v0.0.1">
<title>Plausible.Stats.SQL.Fragments — Plausible v0.0.1</title>
<link rel="stylesheet" href="dist/html-elixir-FM2CSD74.css" />
<script src="dist/handlebars.runtime-NWIB6V2M.js"></script>
<script src="dist/handlebars.templates-43PMFBC7.js"></script>
<script src="dist/sidebar_items-E89CAAB9.js"></script>
<script src="docs_config.js"></script>
<script async src="dist/html-L4O5OK2K.js"></script>
</head>
<body data-type="modules" class="page-module">
<script>
try {
var settings = JSON.parse(localStorage.getItem('ex_doc:settings') || '{}');
if (settings.theme === 'dark' ||
((settings.theme === 'system' || settings.theme == null) &&
window.matchMedia('(prefers-color-scheme: dark)').matches)
) {
document.body.classList.add('dark')
}
} catch (error) { }
</script>
<div class="main">
<button id="sidebar-menu" class="sidebar-button sidebar-toggle" aria-label="toggle sidebar" aria-controls="sidebar">
<i class="ri-menu-line ri-lg" title="Collapse/expand sidebar"></i>
</button>
<div class="background-layer"></div>
<nav id="sidebar" class="sidebar">
<div class="sidebar-header">
<div class="sidebar-projectInfo">
<a href="readme.html" class="sidebar-projectImage">
<img src="assets/logo.png" alt="Plausible" />
</a>
<div>
<a href="readme.html" class="sidebar-projectName" translate="no">
Plausible
</a>
<div class="sidebar-projectVersion" translate="no">
v0.0.1
</div>
</div>
</div>
<ul id="sidebar-listNav" class="sidebar-listNav" role="tablist">
<li>
<button id="extras-list-tab-button" role="tab" data-type="extras" aria-controls="extras-tab-panel" aria-selected="true" tabindex="0">
Pages
</button>
</li>
<li>
<button id="modules-list-tab-button" role="tab" data-type="modules" aria-controls="modules-tab-panel" aria-selected="false" tabindex="-1">
Modules
</button>
</li>
<li>
<button id="tasks-list-tab-button" role="tab" data-type="tasks" aria-controls="tasks-tab-panel" aria-selected="false" tabindex="-1">
<span translate="no">Mix</span> Tasks
</button>
</li>
</ul>
</div>
<div id="extras-tab-panel" class="sidebar-tabpanel" role="tabpanel" aria-labelledby="extras-list-tab-button">
<ul id="extras-full-list" class="full-list"></ul>
</div>
<div id="modules-tab-panel" class="sidebar-tabpanel" role="tabpanel" aria-labelledby="modules-list-tab-button" hidden>
<ul id="modules-full-list" class="full-list"></ul>
</div>
<div id="tasks-tab-panel" class="sidebar-tabpanel" role="tabpanel" aria-labelledby="tasks-list-tab-button" hidden>
<ul id="tasks-full-list" class="full-list"></ul>
</div>
</nav>
<main class="content">
<output role="status" id="toast"></output>
<div class="content-outer">
<div id="content" class="content-inner">
<div class="top-search">
<div class="search-settings">
<form class="search-bar" action="search.html">
<label class="search-label">
<span class="sr-only">Search documentation of Plausible</span>
<input name="q" type="text" class="search-input" placeholder="Search Documentation (press /)" autocomplete="off" autocorrect="off" autocapitalize="off" spellcheck="false" />
</label>
<button type="submit" class="search-button" aria-label="Submit Search">
<i class="ri-search-2-line ri-lg" aria-hidden="true" title="Submit search"></i>
</button>
<button type="button" tabindex="-1" class="search-close-button" aria-hidden="true">
<i class="ri-close-line ri-lg" title="Cancel search"></i>
</button>
</form>
<div class="autocomplete">
</div>
<button class="icon-settings display-settings">
<i class="ri-settings-3-line"></i>
<span class="sr-only">Settings</span>
</button>
</div>
</div>
<h1>
<a href="https://github.com/plausible/analytics/blob/main/lib/plausible/stats/sql/fragments.ex#L1" title="View Source" class="icon-action" rel="help">
<i class="ri-code-s-slash-line" aria-hidden="true"></i>
<span class="sr-only">View Source</span>
</a>
<span translate="no">Plausible.Stats.SQL.Fragments</span>
<small class="app-vsn" translate="no">(Plausible v0.0.1)</small>
</h1>
<section id="moduledoc">
<p>Various macros and common SQL fragments used in Stats code.</p>
</section>
<section id="summary" class="details-list">
<h1 class="section-heading">
<a class="hover-link" href="#summary">
<i class="ri-link-m" aria-hidden="true"></i>
</a>
<span class="text">Summary</span>
</h1>
<div class="summary-functions summary">
<h2>
<a href="#functions">Functions</a>
</h2>
<div class="summary-row">
<div class="summary-signature">
<a href="#bounce_rate/0" translate="no">bounce_rate()</a>
</div>
</div>
<div class="summary-row">
<div class="summary-signature">
<a href="#coalesce_string/2" translate="no">coalesce_string(fieldA, fieldB)</a>
</div>
</div>
<div class="summary-row">
<div class="summary-signature">
<a href="#get_by_key/3" translate="no">get_by_key(table, meta_column, key)</a>
</div>
<div class="summary-synopsis"><p>Returns value of a key (usually property) under <code class="inline">meta.value</code> array or similar.</p></div>
</div>
<div class="summary-row">
<div class="summary-signature">
<a href="#has_key/3" translate="no">has_key(table, meta_column, key)</a>
</div>
<div class="summary-synopsis"><p>Returns whether a key (usually property) exists under <code class="inline">meta.key</code> array or similar.</p></div>
</div>
<div class="summary-row">
<div class="summary-signature">
<a href="#meta_key_column/1" translate="no">meta_key_column(atom)</a>
</div>
</div>
<div class="summary-row">
<div class="summary-signature">
<a href="#meta_value_column/1" translate="no">meta_value_column(atom)</a>
</div>
</div>
<div class="summary-row">
<div class="summary-signature">
<a href="#sample_percent/0" translate="no">sample_percent()</a>
</div>
</div>
<div class="summary-row">
<div class="summary-signature">
<a href="#select_join_fields/4" translate="no">select_join_fields(q, query, list, table_name)</a>
</div>
<div class="summary-synopsis"><p>Macro that helps join two Ecto queries by selecting fields from either one</p></div>
</div>
<div class="summary-row">
<div class="summary-signature">
<a href="#select_merge_as/3" translate="no">select_merge_as(q, binding, map_literal)</a>
</div>
<div class="summary-synopsis"><p>Convenience Ecto macro for wrapping select_merge where each value gets in turn passed to selected_as.</p></div>
</div>
<div class="summary-row">
<div class="summary-signature">
<a href="#to_timezone/2" translate="no">to_timezone(date, timezone)</a>
</div>
<div class="summary-synopsis"><p>Converts time or date and time to the specified timezone.</p></div>
</div>
<div class="summary-row">
<div class="summary-signature">
<a href="#total/0" translate="no">total()</a>
</div>
</div>
<div class="summary-row">
<div class="summary-signature">
<a href="#uniq/1" translate="no">uniq(user_id)</a>
</div>
</div>
<div class="summary-row">
<div class="summary-signature">
<a href="#visit_duration/0" translate="no">visit_duration()</a>
</div>
</div>
<div class="summary-row">
<div class="summary-signature">
<a href="#weekstart_not_before/2" translate="no">weekstart_not_before(date, not_before)</a>
</div>
<div class="summary-synopsis"><p>Returns the weekstart for <code class="inline">date</code>. If the weekstart is before the <code class="inline">not_before</code>
boundary, <code class="inline">not_before</code> is returned.</p></div>
</div>
<div class="summary-row">
<div class="summary-signature">
<a href="#wrap_alias/2" translate="no">wrap_alias(binding, map_literal)</a>
</div>
<div class="summary-synopsis"><p>Convenience Ecto macro for wrapping a map passed to select_merge_as such that each
expression gets wrapped in dynamic and set as selected_as.</p></div>
</div>
</div>
</section>
<section id="functions" class="details-list">
<h1 class="section-heading">
<a class="hover-link" href="#functions">
<i class="ri-link-m" aria-hidden="true"></i>
</a>
<span class="text">Functions</span>
</h1>
<div class="functions-list">
<section class="detail" id="bounce_rate/0">
<div class="detail-header">
<a href="#bounce_rate/0" class="detail-link" title="Link to this macro">
<i class="ri-link-m" aria-hidden="true"></i>
<span class="sr-only">Link to this macro</span>
</a>
<h1 class="signature" translate="no">bounce_rate()</h1>
<a href="https://github.com/plausible/analytics/blob/main/lib/plausible/stats/sql/fragments.ex#L31" class="icon-action" rel="help" title="View Source">
<i class="ri-code-s-slash-line" aria-hidden="true"></i>
<span class="sr-only">View Source</span>
</a>
<span class="note">(macro)</span>
</div>
<section class="docstring">
</section>
</section>
<section class="detail" id="coalesce_string/2">
<div class="detail-header">
<a href="#coalesce_string/2" class="detail-link" title="Link to this macro">
<i class="ri-link-m" aria-hidden="true"></i>
<span class="sr-only">Link to this macro</span>
</a>
<h1 class="signature" translate="no">coalesce_string(fieldA, fieldB)</h1>
<a href="https://github.com/plausible/analytics/blob/main/lib/plausible/stats/sql/fragments.ex#L43" class="icon-action" rel="help" title="View Source">
<i class="ri-code-s-slash-line" aria-hidden="true"></i>
<span class="sr-only">View Source</span>
</a>
<span class="note">(macro)</span>
</div>
<section class="docstring">
</section>
</section>
<section class="detail" id="get_by_key/3">
<div class="detail-header">
<a href="#get_by_key/3" class="detail-link" title="Link to this macro">
<i class="ri-link-m" aria-hidden="true"></i>
<span class="sr-only">Link to this macro</span>
</a>
<h1 class="signature" translate="no">get_by_key(table, meta_column, key)</h1>
<a href="https://github.com/plausible/analytics/blob/main/lib/plausible/stats/sql/fragments.ex#L129" class="icon-action" rel="help" title="View Source">
<i class="ri-code-s-slash-line" aria-hidden="true"></i>
<span class="sr-only">View Source</span>
</a>
<span class="note">(macro)</span>
</div>
<section class="docstring">
<p>Returns value of a key (usually property) under <code class="inline">meta.value</code> array or similar.</p><p>This macro is used for operating on custom properties.
Callsites should also check whether key exists first in SQL via <code class="inline">has_key</code> macro.</p><h2 id="get_by_key/3-examples" class="section-heading">
<a href="#get_by_key/3-examples" class="hover-link">
<i class="ri-link-m" aria-hidden="true"></i>
</a>
<span class="text">Examples</span>
</h2>
<p><code class="inline">get_by_key(e, :meta, &quot;some_property_name&quot;)</code> expands to SQL <code class="inline">meta.value[indexOf(meta.key, &quot;some_property&quot;)]</code></p>
</section>
</section>
<section class="detail" id="has_key/3">
<div class="detail-header">
<a href="#has_key/3" class="detail-link" title="Link to this macro">
<i class="ri-link-m" aria-hidden="true"></i>
<span class="sr-only">Link to this macro</span>
</a>
<h1 class="signature" translate="no">has_key(table, meta_column, key)</h1>
<a href="https://github.com/plausible/analytics/blob/main/lib/plausible/stats/sql/fragments.ex#L109" class="icon-action" rel="help" title="View Source">
<i class="ri-code-s-slash-line" aria-hidden="true"></i>
<span class="sr-only">View Source</span>
</a>
<span class="note">(macro)</span>
</div>
<section class="docstring">
<p>Returns whether a key (usually property) exists under <code class="inline">meta.key</code> array or similar.</p><p>This macro is used for operating on custom properties.</p><h2 id="has_key/3-examples" class="section-heading">
<a href="#has_key/3-examples" class="hover-link">
<i class="ri-link-m" aria-hidden="true"></i>
</a>
<span class="text">Examples</span>
</h2>
<p><code class="inline">has_key(e, :meta, &quot;some_property_name&quot;)</code> expands to SQL <code class="inline">has(meta.key, &quot;some_property_name&quot;)</code></p>
</section>
</section>
<section class="detail" id="meta_key_column/1">
<div class="detail-header">
<a href="#meta_key_column/1" class="detail-link" title="Link to this function">
<i class="ri-link-m" aria-hidden="true"></i>
<span class="sr-only">Link to this function</span>
</a>
<h1 class="signature" translate="no">meta_key_column(atom)</h1>
<a href="https://github.com/plausible/analytics/blob/main/lib/plausible/stats/sql/fragments.ex#L140" class="icon-action" rel="help" title="View Source">
<i class="ri-code-s-slash-line" aria-hidden="true"></i>
<span class="sr-only">View Source</span>
</a>
</div>
<section class="docstring">
</section>
</section>
<section class="detail" id="meta_value_column/1">
<div class="detail-header">
<a href="#meta_value_column/1" class="detail-link" title="Link to this function">
<i class="ri-link-m" aria-hidden="true"></i>
<span class="sr-only">Link to this function</span>
</a>
<h1 class="signature" translate="no">meta_value_column(atom)</h1>
<a href="https://github.com/plausible/analytics/blob/main/lib/plausible/stats/sql/fragments.ex#L143" class="icon-action" rel="help" title="View Source">
<i class="ri-code-s-slash-line" aria-hidden="true"></i>
<span class="sr-only">View Source</span>
</a>
</div>
<section class="docstring">
</section>
</section>
<section class="detail" id="sample_percent/0">
<div class="detail-header">
<a href="#sample_percent/0" class="detail-link" title="Link to this macro">
<i class="ri-link-m" aria-hidden="true"></i>
<span class="sr-only">Link to this macro</span>
</a>
<h1 class="signature" translate="no">sample_percent()</h1>
<a href="https://github.com/plausible/analytics/blob/main/lib/plausible/stats/sql/fragments.ex#L25" class="icon-action" rel="help" title="View Source">
<i class="ri-code-s-slash-line" aria-hidden="true"></i>
<span class="sr-only">View Source</span>
</a>
<span class="note">(macro)</span>
</div>
<section class="docstring">
</section>
</section>
<section class="detail" id="select_join_fields/4">
<div class="detail-header">
<a href="#select_join_fields/4" class="detail-link" title="Link to this macro">
<i class="ri-link-m" aria-hidden="true"></i>
<span class="sr-only">Link to this macro</span>
</a>
<h1 class="signature" translate="no">select_join_fields(q, query, list, table_name)</h1>
<a href="https://github.com/plausible/analytics/blob/main/lib/plausible/stats/sql/fragments.ex#L185" class="icon-action" rel="help" title="View Source">
<i class="ri-code-s-slash-line" aria-hidden="true"></i>
<span class="sr-only">View Source</span>
</a>
<span class="note">(macro)</span>
</div>
<section class="docstring">
<p>Macro that helps join two Ecto queries by selecting fields from either one</p>
</section>
</section>
<section class="detail" id="select_merge_as/3">
<div class="detail-header">
<a href="#select_merge_as/3" class="detail-link" title="Link to this macro">
<i class="ri-link-m" aria-hidden="true"></i>
<span class="sr-only">Link to this macro</span>
</a>
<h1 class="signature" translate="no">select_merge_as(q, binding, map_literal)</h1>
<a href="https://github.com/plausible/analytics/blob/main/lib/plausible/stats/sql/fragments.ex#L176" class="icon-action" rel="help" title="View Source">
<i class="ri-code-s-slash-line" aria-hidden="true"></i>
<span class="sr-only">View Source</span>
</a>
<span class="note">(macro)</span>
</div>
<section class="docstring">
<p>Convenience Ecto macro for wrapping select_merge where each value gets in turn passed to selected_as.</p><h3 id="select_merge_as/3-examples" class="section-heading">
<a href="#select_merge_as/3-examples" class="hover-link">
<i class="ri-link-m" aria-hidden="true"></i>
</a>
<span class="text">Examples</span>
</h3>
<p> iex&gt; select_merge_as(q, [t], %{ foo: t.column }) |&gt; expand_macro_once
&quot;select_merge(q, [], ^wrap_alias([t], %{foo: t.column}))&quot;</p>
</section>
</section>
<section class="detail" id="to_timezone/2">
<div class="detail-header">
<a href="#to_timezone/2" class="detail-link" title="Link to this macro">
<i class="ri-link-m" aria-hidden="true"></i>
<span class="sr-only">Link to this macro</span>
</a>
<h1 class="signature" translate="no">to_timezone(date, timezone)</h1>
<a href="https://github.com/plausible/analytics/blob/main/lib/plausible/stats/sql/fragments.ex#L54" class="icon-action" rel="help" title="View Source">
<i class="ri-code-s-slash-line" aria-hidden="true"></i>
<span class="sr-only">View Source</span>
</a>
<span class="note">(macro)</span>
</div>
<section class="docstring">
<p>Converts time or date and time to the specified timezone.</p><p>Reference: <a href="https://clickhouse.com/docs/en/sql-reference/functions/date-time-functions/#totimezone">https://clickhouse.com/docs/en/sql-reference/functions/date-time-functions/#totimezone</a></p>
</section>
</section>
<section class="detail" id="total/0">
<div class="detail-header">
<a href="#total/0" class="detail-link" title="Link to this macro">
<i class="ri-link-m" aria-hidden="true"></i>
<span class="sr-only">Link to this macro</span>
</a>
<h1 class="signature" translate="no">total()</h1>
<a href="https://github.com/plausible/analytics/blob/main/lib/plausible/stats/sql/fragments.ex#L19" class="icon-action" rel="help" title="View Source">
<i class="ri-code-s-slash-line" aria-hidden="true"></i>
<span class="sr-only">View Source</span>
</a>
<span class="note">(macro)</span>
</div>
<section class="docstring">
</section>
</section>
<section class="detail" id="uniq/1">
<div class="detail-header">
<a href="#uniq/1" class="detail-link" title="Link to this macro">
<i class="ri-link-m" aria-hidden="true"></i>
<span class="sr-only">Link to this macro</span>
</a>
<h1 class="signature" translate="no">uniq(user_id)</h1>
<a href="https://github.com/plausible/analytics/blob/main/lib/plausible/stats/sql/fragments.ex#L13" class="icon-action" rel="help" title="View Source">
<i class="ri-code-s-slash-line" aria-hidden="true"></i>
<span class="sr-only">View Source</span>
</a>
<span class="note">(macro)</span>
</div>
<section class="docstring">
</section>
</section>
<section class="detail" id="visit_duration/0">
<div class="detail-header">
<a href="#visit_duration/0" class="detail-link" title="Link to this macro">
<i class="ri-link-m" aria-hidden="true"></i>
<span class="sr-only">Link to this macro</span>
</a>
<h1 class="signature" translate="no">visit_duration()</h1>
<a href="https://github.com/plausible/analytics/blob/main/lib/plausible/stats/sql/fragments.ex#L37" class="icon-action" rel="help" title="View Source">
<i class="ri-code-s-slash-line" aria-hidden="true"></i>
<span class="sr-only">View Source</span>
</a>
<span class="note">(macro)</span>
</div>
<section class="docstring">
</section>
</section>
<section class="detail" id="weekstart_not_before/2">
<div class="detail-header">
<a href="#weekstart_not_before/2" class="detail-link" title="Link to this macro">
<i class="ri-link-m" aria-hidden="true"></i>
<span class="sr-only">Link to this macro</span>
</a>
<h1 class="signature" translate="no">weekstart_not_before(date, not_before)</h1>
<a href="https://github.com/plausible/analytics/blob/main/lib/plausible/stats/sql/fragments.ex#L88" class="icon-action" rel="help" title="View Source">
<i class="ri-code-s-slash-line" aria-hidden="true"></i>
<span class="sr-only">View Source</span>
</a>
<span class="note">(macro)</span>
</div>
<section class="docstring">
<p>Returns the weekstart for <code class="inline">date</code>. If the weekstart is before the <code class="inline">not_before</code>
boundary, <code class="inline">not_before</code> is returned.</p><h2 id="weekstart_not_before/2-examples" class="section-heading">
<a href="#weekstart_not_before/2-examples" class="hover-link">
<i class="ri-link-m" aria-hidden="true"></i>
</a>
<span class="text">Examples</span>
</h2>
<p>In this pseudo-code example, the fragment returns the weekstart. The
<code class="inline">not_before</code> boundary is set to the past Saturday, which is before the
weekstart, therefore the cap does not apply.</p><pre><code class="makeup elixir" translate="no"><span class="w"> </span><span class="o">&gt;</span><span class="w"> </span><span class="n">this_wednesday</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="ld">~D[2022-11-09]</span><span class="w">
</span><span class="o">&gt;</span><span class="w"> </span><span class="n">past_saturday</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="ld">~D[2022-11-05]</span><span class="w">
</span><span class="o">&gt;</span><span class="w"> </span><span class="n">weekstart_not_before</span><span class="p" data-group-id="5926350350-1">(</span><span class="n">this_wednesday</span><span class="p">,</span><span class="w"> </span><span class="n">past_saturday</span><span class="p" data-group-id="5926350350-1">)</span><span class="w">
</span><span class="ld">~D[2022-11-07]</span></code></pre><p>In this other example, the fragment returns Tuesday and not the weekstart.
The <code class="inline">not_before</code> boundary is set to Tuesday, which is past the weekstart,
therefore the cap applies.</p><pre><code class="makeup elixir" translate="no"><span class="w"> </span><span class="o">&gt;</span><span class="w"> </span><span class="n">this_wednesday</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="ld">~D[2022-11-09]</span><span class="w">
</span><span class="o">&gt;</span><span class="w"> </span><span class="n">this_tuesday</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="ld">~D[2022-11-08]</span><span class="w">
</span><span class="o">&gt;</span><span class="w"> </span><span class="n">weekstart_not_before</span><span class="p" data-group-id="6433225703-1">(</span><span class="n">this_wednesday</span><span class="p">,</span><span class="w"> </span><span class="n">this_tuesday</span><span class="p" data-group-id="6433225703-1">)</span><span class="w">
</span><span class="ld">~D[2022-11-08]</span></code></pre>
</section>
</section>
<section class="detail" id="wrap_alias/2">
<div class="detail-header">
<a href="#wrap_alias/2" class="detail-link" title="Link to this macro">
<i class="ri-link-m" aria-hidden="true"></i>
<span class="sr-only">Link to this macro</span>
</a>
<h1 class="signature" translate="no">wrap_alias(binding, map_literal)</h1>
<a href="https://github.com/plausible/analytics/blob/main/lib/plausible/stats/sql/fragments.ex#L155" class="icon-action" rel="help" title="View Source">
<i class="ri-code-s-slash-line" aria-hidden="true"></i>
<span class="sr-only">View Source</span>
</a>
<span class="note">(macro)</span>
</div>
<section class="docstring">
<p>Convenience Ecto macro for wrapping a map passed to select_merge_as such that each
expression gets wrapped in dynamic and set as selected_as.</p><h3 id="wrap_alias/2-examples" class="section-heading">
<a href="#wrap_alias/2-examples" class="hover-link">
<i class="ri-link-m" aria-hidden="true"></i>
</a>
<span class="text">Examples</span>
</h3>
<p> iex&gt; wrap_alias([t], %{ foo: t.column }) |&gt; expand_macro_once
&quot;%{foo: dynamic([t], selected_as(t.column, :foo))}&quot;</p>
</section>
</section>
</div>
</section>
<footer class="footer">
<p>
<span class="line">
<button class="a-main footer-button display-quick-switch" title="Search HexDocs packages">
Search HexDocs
</button>
<a href="Plausible.epub" title="ePub version">
Download ePub version
</a>
</span>
</p>
<p class="built-using">
Built using
<a href="https://github.com/elixir-lang/ex_doc" title="ExDoc" target="_blank" rel="help noopener" translate="no">ExDoc</a> (v0.31.1) for the
<a href="https://elixir-lang.org" title="Elixir" target="_blank" translate="no">Elixir programming language</a>
</p>
</footer>
</div>
</div>
</main>
</div>
<script src="https://cdn.jsdelivr.net/npm/mermaid/dist/mermaid.min.js"></script>
<script>mermaid.initialize({startOnLoad: true})</script>
</body>
</html>