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><H1
><A
NAME="SQL-ALTERTRIGGER"
></A
>ALTER TRIGGER</H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN54667"
></A
><H2
>Name</H2
>ALTER TRIGGER -- change the definition of a trigger</DIV
><A
NAME="AEN54670"
></A
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="AEN54672"
></A
><H2
>Synopsis</H2
><PRE
CLASS="SYNOPSIS"
>ALTER TRIGGER <TT
CLASS="REPLACEABLE"
><I
>name</I
></TT
> ON <TT
CLASS="REPLACEABLE"
><I
>table</I
></TT
> RENAME TO <TT
CLASS="REPLACEABLE"
><I
>newname</I
></TT
></PRE
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN54677"
></A
><H2
>Description</H2
><P
> <TT
CLASS="COMMAND"
>ALTER TRIGGER</TT
> changes properties of an existing
trigger. The <TT
CLASS="LITERAL"
>RENAME</TT
> clause changes the name of
the given trigger without otherwise changing the trigger
definition.
</P
><P
> You must own the table on which the trigger acts to be allowed to change its properties.
</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN54683"
></A
><H2
>Parameters</H2
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
><TT
CLASS="REPLACEABLE"
><I
>name</I
></TT
></DT
><DD
><P
> The name of an existing trigger to alter.
</P
></DD
><DT
><TT
CLASS="REPLACEABLE"
><I
>table</I
></TT
></DT
><DD
><P
> The name of the table on which this trigger acts.
</P
></DD
><DT
><TT
CLASS="REPLACEABLE"
><I
>newname</I
></TT
></DT
><DD
><P
> The new name for the trigger.
</P
></DD
></DL
></DIV
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN54701"
></A
><H2
>Notes</H2
><P
> The ability to temporarily enable or disable a trigger is provided by
<A
HREF="sql-altertable.html"
><I
>ALTER TABLE</I
></A
>, not by
<TT
CLASS="COMMAND"
>ALTER TRIGGER</TT
>, because <TT
CLASS="COMMAND"
>ALTER TRIGGER</TT
> has no
convenient way to express the option of enabling or disabling all of
a table's triggers at once.
</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN54707"
></A
><H2
>Examples</H2
><P
> To rename an existing trigger:
</P><PRE
CLASS="PROGRAMLISTING"
>ALTER TRIGGER emp_stamp ON emp RENAME TO emp_track_chgs;</PRE
><P>
</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN54711"
></A
><H2
>Compatibility</H2
><P
> <TT
CLASS="COMMAND"
>ALTER TRIGGER</TT
> is a <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
>
extension of the SQL standard.
</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN54716"
></A
><H2
>See Also</H2
><A
HREF="sql-altertable.html"
><I
>ALTER TABLE</I
></A
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