1#@!#!123s

: / proc / self / root / opt / alt / postgresql11 / usr / share / doc / alt-postgresql11-9.2.24 / html /
Filename : ecpg-sql-var.html
back
<!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&nbsp;--&nbsp;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
>