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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>EXECUTE</title><link rel="stylesheet" type="text/css" href="stylesheet.css" /><link rev="made" href="[email protected]" /><meta name="generator" content="DocBook XSL Stylesheets Vsnapshot" /><link rel="prev" href="sql-end.html" title="END" /><link rel="next" href="sql-explain.html" title="EXPLAIN" /></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">EXECUTE</th></tr><tr><td width="10%" align="left"><a accesskey="p" href="sql-end.html" title="END">Prev</a> </td><td width="10%" align="left"><a accesskey="u" href="sql-commands.html" title="SQL Commands">Up</a></td><th width="60%" align="center">SQL Commands</th><td width="10%" align="right"><a accesskey="h" href="index.html" title="PostgreSQL 10.23 Documentation">Home</a></td><td width="10%" align="right"> <a accesskey="n" href="sql-explain.html" title="EXPLAIN">Next</a></td></tr></table><hr></hr></div><div class="refentry" id="SQL-EXECUTE"><div class="titlepage"></div><a id="id-1.9.3.141.1" class="indexterm"></a><a id="id-1.9.3.141.2" class="indexterm"></a><div class="refnamediv"><h2><span class="refentrytitle">EXECUTE</span></h2><p>EXECUTE — execute a prepared statement</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><pre class="synopsis">EXECUTE <em class="replaceable"><code>name</code></em> [ ( <em class="replaceable"><code>parameter</code></em> [, ...] ) ]</pre></div><div class="refsect1" id="id-1.9.3.141.6"><h2>Description</h2><p> <code class="command">EXECUTE</code> is used to execute a previously prepared
statement. Since prepared statements only exist for the duration of a
session, the prepared statement must have been created by a
<code class="command">PREPARE</code> statement executed earlier in the
current session.
</p><p> If the <code class="command">PREPARE</code> statement that created the statement
specified some parameters, a compatible set of parameters must be
passed to the <code class="command">EXECUTE</code> statement, or else an
error is raised. Note that (unlike functions) prepared statements are
not overloaded based on the type or number of their parameters; the
name of a prepared statement must be unique within a database session.
</p><p> For more information on the creation and usage of prepared statements,
see <a class="xref" href="sql-prepare.html" title="PREPARE"><span class="refentrytitle">PREPARE</span></a>.
</p></div><div class="refsect1" id="id-1.9.3.141.7"><h2>Parameters</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="replaceable"><code>name</code></em></span></dt><dd><p> The name of the prepared statement to execute.
</p></dd><dt><span class="term"><em class="replaceable"><code>parameter</code></em></span></dt><dd><p> The actual value of a parameter to the prepared statement. This
must be an expression yielding a value that is compatible with
the data type of this parameter, as was determined when the
prepared statement was created.
</p></dd></dl></div></div><div class="refsect1" id="id-1.9.3.141.8"><h2>Outputs</h2><p> The command tag returned by <code class="command">EXECUTE</code>
is that of the prepared statement, and not <code class="literal">EXECUTE</code>.
</p></div><div class="refsect1" id="id-1.9.3.141.9"><h2>Examples</h2><p> Examples are given in the <a class="xref" href="sql-prepare.html#SQL-PREPARE-EXAMPLES" title="Examples">Examples</a> section of the <a class="xref" href="sql-prepare.html" title="PREPARE"><span class="refentrytitle">PREPARE</span></a> documentation.
</p></div><div class="refsect1" id="id-1.9.3.141.10"><h2>Compatibility</h2><p> The SQL standard includes an <code class="command">EXECUTE</code> statement,
but it is only for use in embedded SQL. This version of the
<code class="command">EXECUTE</code> statement also uses a somewhat different
syntax.
</p></div><div class="refsect1" id="id-1.9.3.141.11"><h2>See Also</h2><span class="simplelist"><a class="xref" href="sql-deallocate.html" title="DEALLOCATE"><span class="refentrytitle">DEALLOCATE</span></a>, <a class="xref" href="sql-prepare.html" title="PREPARE"><span class="refentrytitle">PREPARE</span></a></span></div></div><div xmlns="http://www.w3.org/TR/xhtml1/transitional" class="navfooter"><hr></hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="sql-end.html" title="END">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="sql-commands.html" title="SQL Commands">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="sql-explain.html" title="EXPLAIN">Next</a></td></tr><tr><td width="40%" align="left" valign="top">END </td><td width="20%" align="center"><a accesskey="h" href="index.html" title="PostgreSQL 10.23 Documentation">Home</a></td><td width="40%" align="right" valign="top"> EXPLAIN</td></tr></table></div></body></html>