D7net
Home
Console
Upload
information
Create File
Create Folder
About
Tools
:
/
opt
/
alt
/
postgresql11
/
usr
/
share
/
doc
/
alt-postgresql11-9.2.24
/
html
/
Filename :
ecpg-sql-set-connection.html
back
Copy
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >SET CONNECTION</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="SET AUTOCOMMIT" HREF="ecpg-sql-set-autocommit.html"><LINK REL="NEXT" TITLE="SET DESCRIPTOR" HREF="ecpg-sql-set-descriptor.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="SET AUTOCOMMIT" HREF="ecpg-sql-set-autocommit.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="SET DESCRIPTOR" HREF="ecpg-sql-set-descriptor.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="ECPG-SQL-SET-CONNECTION" ></A >SET CONNECTION</H1 ><DIV CLASS="REFNAMEDIV" ><A NAME="AEN45666" ></A ><H2 >Name</H2 >SET CONNECTION -- select a database connection</DIV ><DIV CLASS="REFSYNOPSISDIV" ><A NAME="AEN45669" ></A ><H2 >Synopsis</H2 ><PRE CLASS="SYNOPSIS" >SET CONNECTION [ TO | = ] <TT CLASS="REPLACEABLE" ><I >connection_name</I ></TT ></PRE ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN45672" ></A ><H2 >Description</H2 ><P > <TT CLASS="COMMAND" >SET CONNECTION</TT > sets the <SPAN CLASS="QUOTE" >"current"</SPAN > database connection, which is the one that all commands use unless overridden. </P ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN45677" ></A ><H2 >Parameters</H2 ><P ></P ><DIV CLASS="VARIABLELIST" ><DL ><DT ><TT CLASS="REPLACEABLE" ><I >connection_name</I ></TT ></DT ><DD ><P > A database connection name established by the <TT CLASS="COMMAND" >CONNECT</TT > command. </P ></DD ><DT ><TT CLASS="LITERAL" >DEFAULT</TT ></DT ><DD ><P > Set the connection to the default connection. </P ></DD ></DL ></DIV ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN45691" ></A ><H2 >Examples</H2 ><PRE CLASS="PROGRAMLISTING" >EXEC SQL SET CONNECTION TO con2; EXEC SQL SET CONNECTION = con1;</PRE ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN45694" ></A ><H2 >Compatibility</H2 ><P > <TT CLASS="COMMAND" >SET CONNECTION</TT > is specified in the SQL standard. </P ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN45698" ></A ><H2 >See Also</H2 ><A HREF="ecpg-sql-connect.html" >CONNECT</A >, <A HREF="ecpg-sql-disconnect.html" >DISCONNECT</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-set-autocommit.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-set-descriptor.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >SET AUTOCOMMIT</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" >SET DESCRIPTOR</TD ></TR ></TABLE ></DIV ></BODY ></HTML >