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   2 <!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>VAR</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="ecpg-sql-type.html" title="TYPE" /><link rel="next" href="ecpg-sql-whenever.html" title="WHENEVER" /></head><body id="docContent" class="container-fluid col-10"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">VAR</th></tr><tr><td width="10%" align="left"><a accesskey="p" href="ecpg-sql-type.html" title="TYPE">Prev</a> </td><td width="10%" align="left"><a accesskey="u" href="ecpg-sql-commands.html" title="34.14. Embedded SQL Commands">Up</a></td><th width="60%" align="center">34.14. Embedded SQL Commands</th><td width="10%" align="right"><a accesskey="h" href="index.html" title="PostgreSQL 18.0 Documentation">Home</a></td><td width="10%" align="right"> <a accesskey="n" href="ecpg-sql-whenever.html" title="WHENEVER">Next</a></td></tr></table><hr /></div><div class="refentry" id="ECPG-SQL-VAR"><div class="titlepage"></div><div class="refnamediv"><h2>VAR</h2><p>VAR — define a variable</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><pre class="synopsis">
   3 VAR <em class="replaceable"><code>varname</code></em> IS <em class="replaceable"><code>ctype</code></em>
   4 </pre></div><div class="refsect1" id="id-1.7.5.20.18.3"><h2>Description</h2><p>
   5      The <code class="command">VAR</code> command assigns a new C data type
   6      to a host variable.  The host variable must be previously
   7      declared in a declare section.
   8     </p></div><div class="refsect1" id="id-1.7.5.20.18.4"><h2>Parameters</h2><div class="variablelist"><dl class="variablelist"><dt id="ECPG-SQL-VAR-VARNAME"><span class="term"><em class="replaceable"><code>varname</code></em></span> <a href="#ECPG-SQL-VAR-VARNAME" class="id_link">#</a></dt><dd><p>
   9         A C variable name.
  10        </p></dd><dt id="ECPG-SQL-VAR-CTYPE"><span class="term"><em class="replaceable"><code>ctype</code></em></span> <a href="#ECPG-SQL-VAR-CTYPE" class="id_link">#</a></dt><dd><p>
  11         A C type specification.
  12        </p></dd></dl></div></div><div class="refsect1" id="id-1.7.5.20.18.5"><h2>Examples</h2><pre class="programlisting">
  13 Exec sql begin declare section;
  14 short a;
  15 exec sql end declare section;
  16 EXEC SQL VAR a IS int;
  17 </pre></div><div class="refsect1" id="id-1.7.5.20.18.6"><h2>Compatibility</h2><p>
  18      The <code class="command">VAR</code> command is a PostgreSQL extension.
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