Re: Trigger for Truncate event

Thanks Kretschmer. Could you tell me what "return new" meant for?

Thanks,
Jigensh

On Thu, Aug 27, 2009 at 12:47 PM, A. Kretschmer <
andreas(dot)kretschmer(at)schollglas(dot)com> wrote:

> In response to Jignesh Shah :
> > Hi,
> >
> > Could any one please point me to TRUNCATE trigger PostgreSQL example?
> >
> > Thanks,
>
> test=# create table jignesh (i int);
> CREATE TABLE
> test=*# create function trg_jignesh() returns trigger as $$begin raise
> notice 'in the function'; return new; end;$$ language plpgsql;
> CREATE FUNCTION
> test=*# create trigger trg1 before truncate on jignesh for each statement
> execute procedure trg_jignesh();
> CREATE TRIGGER
> test=*# create trigger trg2 after truncate on jignesh for each statement
> execute procedure trg_jignesh();
> CREATE TRIGGER
> test=*# truncate jignesh ;
> NOTICE: in the function
> NOTICE: in the function
> TRUNCATE TABLE
>
>
> ROLLBACK, Andreas
> --
> Andreas Kretschmer
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