analytics/Plausible.Stats.Fragments.html
2024-05-14 11:51:06 +00:00

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<h1>
<a href="https://github.com/plausible/analytics/blob/main/lib/plausible/stats/fragments.ex#L1" title="View Source" class="icon-action" rel="help">
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<span translate="no">Plausible.Stats.Fragments</span>
<small class="app-vsn" translate="no">(Plausible v0.0.1)</small>
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<h1 class="section-heading">
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<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="#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="#weekstart_not_before/3" translate="no">weekstart_not_before(date, not_before, timezone)</a>
</div>
<div class="summary-synopsis"><p>Same as Plausible.Stats.Fragments.weekstart_not_before/2 but converts dates to
the specified timezone.</p></div>
</div>
</div>
</section>
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<span class="text">Functions</span>
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<div class="functions-list">
<section class="detail" id="bounce_rate/0">
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<h1 class="signature" translate="no">bounce_rate()</h1>
<a href="https://github.com/plausible/analytics/blob/main/lib/plausible/stats/fragments.ex#L20" class="icon-action" rel="help" title="View Source">
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<span class="note">(macro)</span>
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<h1 class="signature" translate="no">coalesce_string(fieldA, fieldB)</h1>
<a href="https://github.com/plausible/analytics/blob/main/lib/plausible/stats/fragments.ex#L32" class="icon-action" rel="help" title="View Source">
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<span class="note">(macro)</span>
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<section class="docstring">
</section>
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<section class="detail" id="get_by_key/3">
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<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/fragments.ex#L129" class="icon-action" rel="help" title="View Source">
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<span class="note">(macro)</span>
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<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>
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<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>
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<section class="detail" id="has_key/3">
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<h1 class="signature" translate="no">has_key(table, meta_column, key)</h1>
<a href="https://github.com/plausible/analytics/blob/main/lib/plausible/stats/fragments.ex#L109" class="icon-action" rel="help" title="View Source">
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<span class="note">(macro)</span>
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<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>
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<section class="detail" id="meta_key_column/1">
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<h1 class="signature" translate="no">meta_key_column(atom)</h1>
<a href="https://github.com/plausible/analytics/blob/main/lib/plausible/stats/fragments.ex#L140" class="icon-action" rel="help" title="View Source">
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<h1 class="signature" translate="no">meta_value_column(atom)</h1>
<a href="https://github.com/plausible/analytics/blob/main/lib/plausible/stats/fragments.ex#L143" class="icon-action" rel="help" title="View Source">
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<h1 class="signature" translate="no">sample_percent()</h1>
<a href="https://github.com/plausible/analytics/blob/main/lib/plausible/stats/fragments.ex#L14" class="icon-action" rel="help" title="View Source">
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<span class="note">(macro)</span>
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<section class="docstring">
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</section>
<section class="detail" id="to_timezone/2">
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<h1 class="signature" translate="no">to_timezone(date, timezone)</h1>
<a href="https://github.com/plausible/analytics/blob/main/lib/plausible/stats/fragments.ex#L43" class="icon-action" rel="help" title="View Source">
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<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">
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<h1 class="signature" translate="no">total()</h1>
<a href="https://github.com/plausible/analytics/blob/main/lib/plausible/stats/fragments.ex#L8" class="icon-action" rel="help" title="View Source">
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<span class="note">(macro)</span>
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<section class="docstring">
</section>
</section>
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<h1 class="signature" translate="no">uniq(user_id)</h1>
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<span class="note">(macro)</span>
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<section class="detail" id="visit_duration/0">
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<h1 class="signature" translate="no">visit_duration()</h1>
<a href="https://github.com/plausible/analytics/blob/main/lib/plausible/stats/fragments.ex#L26" class="icon-action" rel="help" title="View Source">
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<span class="note">(macro)</span>
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<section class="detail" id="weekstart_not_before/2">
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<h1 class="signature" translate="no">weekstart_not_before(date, not_before)</h1>
<a href="https://github.com/plausible/analytics/blob/main/lib/plausible/stats/fragments.ex#L75" class="icon-action" rel="help" title="View Source">
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<span class="note">(macro)</span>
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<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><p> iex&gt; this_wednesday = ~D[2022-11-09]
...&gt; past_saturday = ~D[2022-11-05]
...&gt; weekstart_not_before(this_wednesday, past_saturday)
~D[2022-11-07]</p><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><p> iex&gt; this_wednesday = ~D[2022-11-09]
...&gt; this_tuesday = ~D[2022-11-08]
...&gt; weekstart_not_before(this_wednesday, this_tuesday)
~D[2022-11-08]</p>
</section>
</section>
<section class="detail" id="weekstart_not_before/3">
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<h1 class="signature" translate="no">weekstart_not_before(date, not_before, timezone)</h1>
<a href="https://github.com/plausible/analytics/blob/main/lib/plausible/stats/fragments.ex#L91" class="icon-action" rel="help" title="View Source">
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<span class="note">(macro)</span>
</div>
<section class="docstring">
<p>Same as Plausible.Stats.Fragments.weekstart_not_before/2 but converts dates to
the specified timezone.</p>
</section>
</section>
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