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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>SPI_saveplan</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 Vsnapshot" /><link rel="prev" href="spi-spi-keepplan.html" title="SPI_keepplan" /><link rel="next" href="spi-spi-register-relation.html" title="SPI_register_relation" /></head><body id="docContent" class="container-fluid col-10"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">SPI_saveplan</th></tr><tr><td width="10%" align="left"><a accesskey="p" href="spi-spi-keepplan.html" title="SPI_keepplan">Prev</a> </td><td width="10%" align="left"><a accesskey="u" href="spi-interface.html" title="47.1. Interface Functions">Up</a></td><th width="60%" align="center">47.1. Interface Functions</th><td width="10%" align="right"><a accesskey="h" href="index.html" title="PostgreSQL 15.4 Documentation">Home</a></td><td width="10%" align="right"> <a accesskey="n" href="spi-spi-register-relation.html" title="SPI_register_relation">Next</a></td></tr></table><hr /></div><div class="refentry" id="SPI-SPI-SAVEPLAN"><div class="titlepage"></div><a id="id-1.8.12.8.30.1" class="indexterm"></a><div class="refnamediv"><h2><span class="refentrytitle">SPI_saveplan</span></h2><p>SPI_saveplan — save a prepared statement</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><pre class="synopsis">
+SPIPlanPtr SPI_saveplan(SPIPlanPtr <em class="parameter"><code>plan</code></em>)
+</pre></div><div class="refsect1" id="id-1.8.12.8.30.5"><h2>Description</h2><p>
+   <code class="function">SPI_saveplan</code> copies a passed statement (prepared by
+   <code class="function">SPI_prepare</code>) into memory that will not be freed
+   by <code class="function">SPI_finish</code> nor by the transaction manager,
+   and returns a pointer to the copied statement.  This gives you the
+   ability to reuse prepared statements in the subsequent invocations of
+   your C function in the current session.
+  </p></div><div class="refsect1" id="id-1.8.12.8.30.6"><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><code class="literal">SPIPlanPtr <em class="parameter"><code>plan</code></em></code></span></dt><dd><p>
+      the prepared statement to be saved
+     </p></dd></dl></div></div><div class="refsect1" id="id-1.8.12.8.30.7"><h2>Return Value</h2><p>
+   Pointer to the copied statement; or <code class="symbol">NULL</code> if unsuccessful.
+   On error, <code class="varname">SPI_result</code> is set thus:
+
+   </p><div class="variablelist"><dl class="variablelist"><dt><span class="term"><code class="symbol">SPI_ERROR_ARGUMENT</code></span></dt><dd><p>
+       if <em class="parameter"><code>plan</code></em> is <code class="symbol">NULL</code> or invalid
+      </p></dd><dt><span class="term"><code class="symbol">SPI_ERROR_UNCONNECTED</code></span></dt><dd><p>
+       if called from an unconnected C function
+      </p></dd></dl></div><p>
+  </p></div><div class="refsect1" id="id-1.8.12.8.30.8"><h2>Notes</h2><p>
+   The originally passed-in statement is not freed, so you might wish to do
+   <code class="function">SPI_freeplan</code> on it to avoid leaking memory
+   until <code class="function">SPI_finish</code>.
+  </p><p>
+   In most cases, <code class="function">SPI_keepplan</code> is preferred to this
+   function, since it accomplishes largely the same result without needing
+   to physically copy the prepared statement's data structures.
+  </p></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="spi-spi-keepplan.html" title="SPI_keepplan">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="spi-interface.html" title="47.1. Interface Functions">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="spi-spi-register-relation.html" title="SPI_register_relation">Next</a></td></tr><tr><td width="40%" align="left" valign="top">SPI_keepplan </td><td width="20%" align="center"><a accesskey="h" href="index.html" title="PostgreSQL 15.4 Documentation">Home</a></td><td width="40%" align="right" valign="top"> SPI_register_relation</td></tr></table></div></body></html>
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