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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 >OPEN</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="GET DESCRIPTOR" HREF="ecpg-sql-get-descriptor.html"><LINK REL="NEXT" TITLE="PREPARE" HREF="ecpg-sql-prepare.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="GET DESCRIPTOR" HREF="ecpg-sql-get-descriptor.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="PREPARE" HREF="ecpg-sql-prepare.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="ECPG-SQL-OPEN" ></A >OPEN</H1 ><DIV CLASS="REFNAMEDIV" ><A NAME="AEN45562" ></A ><H2 >Name</H2 >OPEN -- open a dynamic cursor</DIV ><DIV CLASS="REFSYNOPSISDIV" ><A NAME="AEN45565" ></A ><H2 >Synopsis</H2 ><PRE CLASS="SYNOPSIS" >OPEN <TT CLASS="REPLACEABLE" ><I >cursor_name</I ></TT > OPEN <TT CLASS="REPLACEABLE" ><I >cursor_name</I ></TT > USING <TT CLASS="REPLACEABLE" ><I >value</I ></TT > [, ... ] OPEN <TT CLASS="REPLACEABLE" ><I >cursor_name</I ></TT > USING SQL DESCRIPTOR <TT CLASS="REPLACEABLE" ><I >descriptor_name</I ></TT ></PRE ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN45572" ></A ><H2 >Description</H2 ><P > <TT CLASS="COMMAND" >OPEN</TT > opens a cursor and optionally binds actual values to the placeholders in the cursor's declaration. The cursor must previously have been declared with the <TT CLASS="COMMAND" >DECLARE</TT > command. The execution of <TT CLASS="COMMAND" >OPEN</TT > causes the query to start executing on the server. </P ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN45578" ></A ><H2 >Parameters</H2 ><P ></P ><DIV CLASS="VARIABLELIST" ><DL ><DT ><TT CLASS="REPLACEABLE" ><I >cursor_name</I ></TT ></DT ><DD ><P > The name of the cursor to be opened. This can be an SQL identifier or a host variable. </P ></DD ><DT ><TT CLASS="REPLACEABLE" ><I >value</I ></TT ></DT ><DD ><P > A value to be bound to a placeholder in the cursor. This can be an SQL constant, a host variable, or a host variable with indicator. </P ></DD ><DT ><TT CLASS="REPLACEABLE" ><I >descriptor_name</I ></TT ></DT ><DD ><P > The name of a descriptor containing values to be bound to the placeholders in the cursor. This can be an SQL identifier or a host variable. </P ></DD ></DL ></DIV ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN45596" ></A ><H2 >Examples</H2 ><PRE CLASS="PROGRAMLISTING" >EXEC SQL OPEN a; EXEC SQL OPEN d USING 1, 'test'; EXEC SQL OPEN c1 USING SQL DESCRIPTOR mydesc; EXEC SQL OPEN :curname1;</PRE ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN45599" ></A ><H2 >Compatibility</H2 ><P > <TT CLASS="COMMAND" >OPEN</TT > is specified in the SQL standard. </P ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN45603" ></A ><H2 >See Also</H2 ><A HREF="ecpg-sql-declare.html" >DECLARE</A >, <A HREF="sql-close.html" >CLOSE</A ></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-get-descriptor.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-prepare.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >GET DESCRIPTOR</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" >PREPARE</TD ></TR ></TABLE ></DIV ></BODY ></HTML >