<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >DROP TRIGGER</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 8.0.11 Documentation" HREF="index.html"><LINK REL="UP" TITLE="SQL Commands" HREF="sql-commands.html"><LINK REL="PREVIOUS" TITLE="DROP TABLESPACE" HREF="sql-droptablespace.html"><LINK REL="NEXT" TITLE="DROP TYPE" HREF="sql-droptype.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="2007-02-02T03:57:22"></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" >PostgreSQL 8.0.11 Documentation</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="top" ><A HREF="sql-droptablespace.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="10%" ALIGN="left" VALIGN="top" ><A HREF="sql-droptablespace.html" >Fast Backward</A ></TD ><TD WIDTH="60%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="top" ><A HREF="sql-droptype.html" >Fast Forward</A ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="top" ><A HREF="sql-droptype.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="SQL-DROPTRIGGER" ></A >DROP TRIGGER</H1 ><DIV CLASS="REFNAMEDIV" ><A NAME="AEN42730" ></A ><H2 >Name</H2 >DROP TRIGGER -- remove a trigger</DIV ><A NAME="AEN42733" ></A ><DIV CLASS="REFSYNOPSISDIV" ><A NAME="AEN42735" ></A ><H2 >Synopsis</H2 ><PRE CLASS="SYNOPSIS" >DROP TRIGGER <TT CLASS="REPLACEABLE" ><I >name</I ></TT > ON <TT CLASS="REPLACEABLE" ><I >table</I ></TT > [ CASCADE | RESTRICT ]</PRE ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN42739" ></A ><H2 >Description</H2 ><P > <TT CLASS="COMMAND" >DROP TRIGGER</TT > will remove an existing trigger definition. To execute this command, the current user must be the owner of the table for which the trigger is defined. </P ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN42743" ></A ><H2 >Parameters</H2 ><P ></P ><DIV CLASS="VARIABLELIST" ><DL ><DT ><TT CLASS="REPLACEABLE" ><I >name</I ></TT ></DT ><DD ><P > The name of the trigger to remove. </P ></DD ><DT ><TT CLASS="REPLACEABLE" ><I >table</I ></TT ></DT ><DD ><P > The name (optionally schema-qualified) of the table for which the trigger is defined. </P ></DD ><DT ><TT CLASS="LITERAL" >CASCADE</TT ></DT ><DD ><P > Automatically drop objects that depend on the trigger. </P ></DD ><DT ><TT CLASS="LITERAL" >RESTRICT</TT ></DT ><DD ><P > Refuse to drop the trigger if any objects depend on it. This is the default. </P ></DD ></DL ></DIV ></DIV ><DIV CLASS="REFSECT1" ><A NAME="SQL-DROPTRIGGER-EXAMPLES" ></A ><H2 >Examples</H2 ><P > Destroy the trigger <TT CLASS="LITERAL" >if_dist_exists</TT > on the table <TT CLASS="LITERAL" >films</TT >: </P><PRE CLASS="PROGRAMLISTING" >DROP TRIGGER if_dist_exists ON films;</PRE ><P> </P ></DIV ><DIV CLASS="REFSECT1" ><A NAME="SQL-DROPTRIGGER-COMPATIBILITY" ></A ><H2 >Compatibility</H2 ><P > The <TT CLASS="COMMAND" >DROP TRIGGER</TT > statement in <SPAN CLASS="PRODUCTNAME" >PostgreSQL</SPAN > is incompatible with the SQL standard. In the SQL standard, trigger names are not local to tables, so the command is simply <TT CLASS="LITERAL" >DROP TRIGGER <TT CLASS="REPLACEABLE" ><I >name</I ></TT ></TT >. </P ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN42779" ></A ><H2 >See Also</H2 ><A HREF="sql-createtrigger.html" ><I >CREATE TRIGGER</I ></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="sql-droptablespace.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="sql-droptype.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >DROP TABLESPACE</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="sql-commands.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >DROP TYPE</TD ></TR ></TABLE ></DIV ></BODY ></HTML >