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- <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>51.77. pg_prepared_statements</title><link rel="stylesheet" type="text/css" href="stylesheet.css" /><link rev="made" href="pgsql-docs@lists.postgresql.org" /><meta name="generator" content="DocBook XSL Stylesheets V1.79.1" /><link rel="prev" href="view-pg-policies.html" title="51.76. pg_policies" /><link rel="next" href="view-pg-prepared-xacts.html" title="51.78. pg_prepared_xacts" /></head><body><div xmlns="http://www.w3.org/TR/xhtml1/transitional" class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">51.77. <code xmlns="http://www.w3.org/1999/xhtml" class="structname">pg_prepared_statements</code></th></tr><tr><td width="10%" align="left"><a accesskey="p" href="view-pg-policies.html" title="51.76. pg_policies">Prev</a> </td><td width="10%" align="left"><a accesskey="u" href="catalogs.html" title="Chapter 51. System Catalogs">Up</a></td><th width="60%" align="center">Chapter 51. System Catalogs</th><td width="10%" align="right"><a accesskey="h" href="index.html" title="PostgreSQL 12.4 Documentation">Home</a></td><td width="10%" align="right"> <a accesskey="n" href="view-pg-prepared-xacts.html" title="51.78. pg_prepared_xacts">Next</a></td></tr></table><hr></hr></div><div class="sect1" id="VIEW-PG-PREPARED-STATEMENTS"><div class="titlepage"><div><div><h2 class="title" style="clear: both">51.77. <code class="structname">pg_prepared_statements</code></h2></div></div></div><a id="id-1.10.4.79.2" class="indexterm"></a><p>
- The <code class="structname">pg_prepared_statements</code> view displays
- all the prepared statements that are available in the current
- session. See <a class="xref" href="sql-prepare.html" title="PREPARE"><span class="refentrytitle">PREPARE</span></a> for more information about prepared
- statements.
- </p><p>
- <code class="structname">pg_prepared_statements</code> contains one row
- for each prepared statement. Rows are added to the view when a new
- prepared statement is created and removed when a prepared statement
- is released (for example, via the <a class="xref" href="sql-deallocate.html" title="DEALLOCATE"><span class="refentrytitle">DEALLOCATE</span></a> command).
- </p><div class="table" id="id-1.10.4.79.5"><p class="title"><strong>Table 51.78. <code class="structname">pg_prepared_statements</code> Columns</strong></p><div class="table-contents"><table class="table" summary="pg_prepared_statements Columns" border="1"><colgroup><col /><col /><col /></colgroup><thead><tr><th>Name</th><th>Type</th><th>Description</th></tr></thead><tbody><tr><td><code class="structfield">name</code></td><td><code class="type">text</code></td><td>
- The identifier of the prepared statement
- </td></tr><tr><td><code class="structfield">statement</code></td><td><code class="type">text</code></td><td>
- The query string submitted by the client to create this
- prepared statement. For prepared statements created via SQL,
- this is the <code class="command">PREPARE</code> statement submitted by
- the client. For prepared statements created via the
- frontend/backend protocol, this is the text of the prepared
- statement itself.
- </td></tr><tr><td><code class="structfield">prepare_time</code></td><td><code class="type">timestamptz</code></td><td>
- The time at which the prepared statement was created
- </td></tr><tr><td><code class="structfield">parameter_types</code></td><td><code class="type">regtype[]</code></td><td>
- The expected parameter types for the prepared statement in the
- form of an array of <code class="type">regtype</code>. The OID corresponding
- to an element of this array can be obtained by casting the
- <code class="type">regtype</code> value to <code class="type">oid</code>.
- </td></tr><tr><td><code class="structfield">from_sql</code></td><td><code class="type">boolean</code></td><td>
- <code class="literal">true</code> if the prepared statement was created
- via the <code class="command">PREPARE</code> SQL command;
- <code class="literal">false</code> if the statement was prepared via the
- frontend/backend protocol
- </td></tr></tbody></table></div></div><br class="table-break" /><p>
- The <code class="structname">pg_prepared_statements</code> view is read only.
- </p></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="view-pg-policies.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="catalogs.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="view-pg-prepared-xacts.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">51.76. <code class="structname">pg_policies</code> </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> 51.78. <code class="structname">pg_prepared_xacts</code></td></tr></table></div></body></html>
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