Обсуждение: Re: [HACKERS] Rule system (trigger names)

>    possible:
>
>        CREATE TRIGGER on_insert AFTER INSERT on emp
>            FOR EACH ROW EXECUTE PROCEDURE on_ins_emp();
>
>        CREATE TRIGGER on_insert AFTER INSERT on payroll
>            FOR EACH ROW EXECUTE PROCEDURE on_ins_payroll();
>
>    The name of the trigger  is  the  same  but  the  table  they
>    triggered  for  differs  and they call different functions.

I think trigger names shoud be unique. Like in Informix, Oracle, DB/2.

Remember to drop a trigger, the syntax usually is:
    drop trigger on_insert;

so you could safely name the function _trig_<triggername> e.g.

Andreas

>
> >    possible:
> >
> >        CREATE TRIGGER on_insert AFTER INSERT on emp
> >            FOR EACH ROW EXECUTE PROCEDURE on_ins_emp();
> >
> >        CREATE TRIGGER on_insert AFTER INSERT on payroll
> >            FOR EACH ROW EXECUTE PROCEDURE on_ins_payroll();
> >
> >    The name of the trigger  is  the  same  but  the  table  they
> >    triggered  for  differs  and they call different functions.
>
> I think trigger names shoud be unique. Like in Informix, Oracle, DB/2.
>
> Remember to drop a trigger, the syntax usually is:
>     drop trigger on_insert;

    Not in PostgreSQL. Here it is

        DROP TRIGGER trigname ON relation;

>
> so you could safely name the function _trig_<triggername> e.g.
>
> Andreas
>
>
>


Jan

--

#======================================================================#
# It's easier to get forgiveness for being wrong than for being right. #
# Let's break this rule - forgive me.                                  #
#======================================== jwieck@debis.com (Jan Wieck) #