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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_cursor_open_with_paramlist</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-cursor-open-with-args.html" title="SPI_cursor_open_with_args" /><link rel="next" href="spi-spi-cursor-find.html" title="SPI_cursor_find" /></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">SPI_cursor_open_with_paramlist</th></tr><tr><td width="10%" align="left"><a accesskey="p" href="spi-spi-cursor-open-with-args.html" title="SPI_cursor_open_with_args">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 11.5 Documentation">Home</a></td><td width="10%" align="right"> <a accesskey="n" href="spi-spi-cursor-find.html" title="SPI_cursor_find">Next</a></td></tr></table><hr></hr></div><div class="refentry" id="SPI-SPI-CURSOR-OPEN-WITH-PARAMLIST"><div class="titlepage"></div><a id="id-1.8.12.8.18.1" class="indexterm"></a><div class="refnamediv"><h2><span class="refentrytitle">SPI_cursor_open_with_paramlist</span></h2><p>SPI_cursor_open_with_paramlist — set up a cursor using parameters</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><pre class="synopsis">
Portal SPI_cursor_open_with_paramlist(const char *<em class="parameter"><code>name</code></em>,
SPIPlanPtr <em class="parameter"><code>plan</code></em>,
ParamListInfo <em class="parameter"><code>params</code></em>,
bool <em class="parameter"><code>read_only</code></em>)
</pre></div><div class="refsect1" id="id-1.8.12.8.18.5"><h2>Description</h2><p>
<code class="function">SPI_cursor_open_with_paramlist</code> sets up a cursor
(internally, a portal) that will execute a statement prepared by
<code class="function">SPI_prepare</code>.
This function is equivalent to <code class="function">SPI_cursor_open</code>
except that information about the parameter values to be passed to the
query is presented differently. The <code class="literal">ParamListInfo</code>
representation can be convenient for passing down values that are
already available in that format. It also supports use of dynamic
parameter sets via hook functions specified in <code class="literal">ParamListInfo</code>.
</p><p>
The passed-in parameter data will be copied into the cursor's portal, so it
can be freed while the cursor still exists.
</p></div><div class="refsect1" id="id-1.8.12.8.18.6"><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><code class="literal">const char * <em class="parameter"><code>name</code></em></code></span></dt><dd><p>
name for portal, or <code class="symbol">NULL</code> to let the system
select a name
</p></dd><dt><span class="term"><code class="literal">SPIPlanPtr <em class="parameter"><code>plan</code></em></code></span></dt><dd><p>
prepared statement (returned by <code class="function">SPI_prepare</code>)
</p></dd><dt><span class="term"><code class="literal">ParamListInfo <em class="parameter"><code>params</code></em></code></span></dt><dd><p>
data structure containing parameter types and values; NULL if none
</p></dd><dt><span class="term"><code class="literal">bool <em class="parameter"><code>read_only</code></em></code></span></dt><dd><p><code class="literal">true</code> for read-only execution</p></dd></dl></div></div><div class="refsect1" id="id-1.8.12.8.18.7"><h2>Return Value</h2><p>
Pointer to portal containing the cursor. Note there is no error
return convention; any error will be reported via <code class="function">elog</code>.
</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-cursor-open-with-args.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="spi-interface.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="spi-spi-cursor-find.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">SPI_cursor_open_with_args </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> SPI_cursor_find</td></tr></table></div></body></html>
