blob: a602837a9fee741030c249e3585cf4acdc550de3 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
|
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!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_fetch</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-find.html" title="SPI_cursor_find" /><link rel="next" href="spi-spi-cursor-move.html" title="SPI_cursor_move" /></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_cursor_fetch</th></tr><tr><td width="10%" align="left"><a accesskey="p" href="spi-spi-cursor-find.html" title="SPI_cursor_find">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-cursor-move.html" title="SPI_cursor_move">Next</a></td></tr></table><hr /></div><div class="refentry" id="SPI-SPI-CURSOR-FETCH"><div class="titlepage"></div><a id="id-1.8.12.8.24.1" class="indexterm"></a><div class="refnamediv"><h2><span class="refentrytitle">SPI_cursor_fetch</span></h2><p>SPI_cursor_fetch — fetch some rows from a cursor</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><pre class="synopsis">
void SPI_cursor_fetch(Portal <em class="parameter"><code>portal</code></em>, bool <em class="parameter"><code>forward</code></em>, long <em class="parameter"><code>count</code></em>)
</pre></div><div class="refsect1" id="id-1.8.12.8.24.5"><h2>Description</h2><p>
<code class="function">SPI_cursor_fetch</code> fetches some rows from a
cursor. This is equivalent to a subset of the SQL command
<code class="command">FETCH</code> (see <code class="function">SPI_scroll_cursor_fetch</code>
for more functionality).
</p></div><div class="refsect1" id="id-1.8.12.8.24.6"><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><code class="literal">Portal <em class="parameter"><code>portal</code></em></code></span></dt><dd><p>
portal containing the cursor
</p></dd><dt><span class="term"><code class="literal">bool <em class="parameter"><code>forward</code></em></code></span></dt><dd><p>
true for fetch forward, false for fetch backward
</p></dd><dt><span class="term"><code class="literal">long <em class="parameter"><code>count</code></em></code></span></dt><dd><p>
maximum number of rows to fetch
</p></dd></dl></div></div><div class="refsect1" id="id-1.8.12.8.24.7"><h2>Return Value</h2><p>
<code class="varname">SPI_processed</code> and
<code class="varname">SPI_tuptable</code> are set as in
<code class="function">SPI_execute</code> if successful.
</p></div><div class="refsect1" id="id-1.8.12.8.24.8"><h2>Notes</h2><p>
Fetching backward may fail if the cursor's plan was not created
with the <code class="symbol">CURSOR_OPT_SCROLL</code> option.
</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-find.html" title="SPI_cursor_find">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-cursor-move.html" title="SPI_cursor_move">Next</a></td></tr><tr><td width="40%" align="left" valign="top">SPI_cursor_find </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_cursor_move</td></tr></table></div></body></html>
|
