T
></DT
><DD
><P
>            Returns true if the trigger was fired by an <TT
CLASS="COMMAND"
>INSERT</TT
> command.
           </P
></DD
><DT
><TT
CLASS="LITERAL"
>TRIGGER_FIRED_BY_UPDATE(tg_event)</TT
></DT
><DD
><P
>            Returns true if the trigger was fired by an <TT
CLASS="COMMAND"
>UPDATE</TT
> command.
           </P
></DD
><DT
><TT
CLASS="LITERAL"
>TRIGGER_FIRED_BY_DELETE(tg_event)</TT
></DT
><DD
><P
>            Returns true if the trigger was fired by a <TT
CLASS="COMMAND"
>DELETE</TT
> com