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<title>EXECUTE</title>
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<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="refentry" lang="en">
<a name="sql-execute"></a><div class="titlepage"></div>
<div class="refnamediv">
<h2>Name</h2>
<p>EXECUTE — execute a prepared statement</p>
</div>
<a name="id773910"></a><a name="id773919"></a><div class="refsynopsisdiv">
<h2>Synopsis</h2>
<pre class="synopsis">EXECUTE <em class="replaceable"><code>plan_name</code></em> [ (<em class="replaceable"><code>parameter</code></em> [, ...] ) ]</pre>
</div>
<div class="refsect1" lang="en">
<a name="id773952"></a><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 href="sql-prepare.html">PREPARE</a>.
</p>
</div>
<div class="refsect1" lang="en">
<a name="id774013"></a><h2>Parameters</h2>
<div class="variablelist"><dl>
<dt><span class="term"><em class="replaceable"><code>plan_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 of a type compatible with
the data type specified for this parameter position in the
<code class="command">PREPARE</code> command that created the prepared
statement.
</p></dd>
</dl></div>
</div>
<div class="refsect1" lang="en">
<a name="id774053"></a><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" lang="en">
<a name="id774073"></a><h2>Examples</h2>
<p> Examples are given in the <a href="sql-prepare.html#sql-prepare-examples">Examples</a> section of the <a href="sql-prepare.html">PREPARE</a> documentation.
</p>
</div>
<div class="refsect1" lang="en">
<a name="id774107"></a><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" lang="en">
<a name="id774129"></a><h2>See Also</h2>
<span class="simplelist"><a href="sql-deallocate.html">DEALLOCATE</a>, <a href="sql-prepare.html">PREPARE</a></span>
</div>
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