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NAME="SQL-ALTERTRIGGER"
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>ALTER TRIGGER</H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN65798"
></A
><H2
>Name</H2
>ALTER TRIGGER&nbsp;--&nbsp;change the definition of a trigger</DIV
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="AEN65803"
></A
><H2
>Synopsis</H2
><PRE
CLASS="SYNOPSIS"
>ALTER TRIGGER <TT
CLASS="REPLACEABLE"
><I
>name</I
></TT
> ON <TT
CLASS="REPLACEABLE"
><I
>table_name</I
></TT
> RENAME TO <TT
CLASS="REPLACEABLE"
><I
>new_name</I
></TT
></PRE
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN65808"
></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="AEN65814"
></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_name</I
></TT
></DT
><DD
><P
>      The name of the table on which this trigger acts.
     </P
></DD
><DT
><TT
CLASS="REPLACEABLE"
><I
>new_name</I
></TT
></DT
><DD
><P
>      The new name for the trigger.
     </P
></DD
></DL
></DIV
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN65832"
></A
><H2
>Notes</H2
><P
>    The ability to temporarily enable or disable a trigger is provided by
    <A
HREF="sql-altertable.html"
>ALTER TABLE</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="AEN65838"
></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="AEN65842"
></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="AEN65847"
></A
><H2
>See Also</H2
><A
HREF="sql-altertable.html"
>ALTER TABLE</A
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