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><H1
><A
NAME="SQL-DROPTRIGGER"
></A
>DROP TRIGGER</H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN62576"
></A
><H2
>Name</H2
>DROP TRIGGER -- remove a trigger</DIV
><A
NAME="AEN62579"
></A
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="AEN62581"
></A
><H2
>Synopsis</H2
><PRE
CLASS="SYNOPSIS"
>DROP TRIGGER [ IF EXISTS ] <TT
CLASS="REPLACEABLE"
><I
>name</I
></TT
> ON <TT
CLASS="REPLACEABLE"
><I
>table</I
></TT
> [ CASCADE | RESTRICT ]</PRE
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN62585"
></A
><H2
>Description</H2
><P
> <TT
CLASS="COMMAND"
>DROP TRIGGER</TT
> removes 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="AEN62589"
></A
><H2
>Parameters</H2
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
><TT
CLASS="LITERAL"
>IF EXISTS</TT
></DT
><DD
><P
> Do not throw an error if the trigger does not exist. A notice is issued
in this case.
</P
></DD
><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="AEN62630"
></A
><H2
>See Also</H2
><A
HREF="sql-createtrigger.html"
><I
>CREATE TRIGGER</I
></A
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