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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >VAR</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK REV="MADE" HREF="mailto:pgsql-docs@postgresql.org"><LINK REL="HOME" TITLE="PostgreSQL 9.2.24 Documentation" HREF="index.html"><LINK REL="UP" TITLE="Embedded SQL Commands" HREF="ecpg-sql-commands.html"><LINK REL="PREVIOUS" TITLE="TYPE" HREF="ecpg-sql-type.html"><LINK REL="NEXT" TITLE="WHENEVER" HREF="ecpg-sql-whenever.html"><LINK REL="STYLESHEET" TYPE="text/css" HREF="stylesheet.css"><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-1"><META NAME="creation" CONTENT="2017-11-06T22:43:11"></HEAD ><BODY CLASS="REFENTRY" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="5" ALIGN="center" VALIGN="bottom" ><A HREF="index.html" >PostgreSQL 9.2.24 Documentation</A ></TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="top" ><A TITLE="TYPE" HREF="ecpg-sql-type.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="10%" ALIGN="left" VALIGN="top" ><A HREF="ecpg-sql-commands.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="60%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="20%" ALIGN="right" VALIGN="top" ><A TITLE="WHENEVER" HREF="ecpg-sql-whenever.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="ECPG-SQL-VAR" ></A >VAR</H1 ><DIV CLASS="REFNAMEDIV" ><A NAME="AEN45809" ></A ><H2 >Name</H2 >VAR -- define a variable</DIV ><DIV CLASS="REFSYNOPSISDIV" ><A NAME="AEN45812" ></A ><H2 >Synopsis</H2 ><PRE CLASS="SYNOPSIS" >VAR <TT CLASS="REPLACEABLE" ><I >varname</I ></TT > IS <TT CLASS="REPLACEABLE" ><I >ctype</I ></TT ></PRE ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN45816" ></A ><H2 >Description</H2 ><P > The <TT CLASS="COMMAND" >VAR</TT > command assigns a new C data type to a host variable. The host variable must be previously declared in a declare section. </P ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN45820" ></A ><H2 >Parameters</H2 ><P ></P ><DIV CLASS="VARIABLELIST" ><DL ><DT ><TT CLASS="REPLACEABLE" ><I >varname</I ></TT ></DT ><DD ><P > A C variable name. </P ></DD ><DT ><TT CLASS="REPLACEABLE" ><I >ctype</I ></TT ></DT ><DD ><P > A C type specification. </P ></DD ></DL ></DIV ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN45833" ></A ><H2 >Examples</H2 ><PRE CLASS="PROGRAMLISTING" >Exec sql begin declare section; short a; exec sql end declare section; EXEC SQL VAR a IS int;</PRE ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN45836" ></A ><H2 >Compatibility</H2 ><P > The <TT CLASS="COMMAND" >VAR</TT > command is a PostgreSQL extension. </P ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="ecpg-sql-type.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="ecpg-sql-whenever.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >TYPE</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ecpg-sql-commands.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >WHENEVER</TD ></TR ></TABLE ></DIV ></BODY ></HTML >