Re: referential constraint bug - Mailing list pgsql-bugs

From Bruce Momjian
Subject Re: referential constraint bug
Date
Msg-id 200203190257.g2J2vJK13410@candle.pha.pa.us
Whole thread Raw
In response to Re: referential constraint bug  (Stephan Szabo <sszabo@megazone23.bigpanda.com>)
List pgsql-bugs
Patch applied.  Thanks.

---------------------------------------------------------------------------


Stephan Szabo wrote:
>
> On Wed, 6 Mar 2002, Eric Lu wrote:
>
> > To whom it may concern:
> >
> >  I found a constraint bug on PostgreSQL lastest version (7.2).
>
> Yes, it's still seeing some invalid states of the table. I believe
> the following will fix the case (it was part of a larger patch that
> was rejected, but I think this part is safe -- if not I'm sure someone
> will jump in).
>
> *** pgsql/src/backend/utils/adt/ri_triggers.c.orig    Tue Mar 12 23:33:32 2002
> --- pgsql/src/backend/utils/adt/ri_triggers.c    Tue Mar 12 23:33:47 2002
> ***************
> *** 208,213 ****
> --- 208,224 ----
>           new_row = trigdata->tg_trigtuple;
>       }
>
> +         /*
> +          * We should not even consider checking the row if it is no longer
> +          * valid since it was either deleted (doesn't matter) or updated
> +          * (in which case it'll be checked with its final values).
> +          */
> +         if (new_row) {
> +                 if (!HeapTupleSatisfiesItself(new_row->t_data)) {
> +                         return PointerGetDatum(NULL);
> +                 }
> +         }
> +
>       /* ----------
>        * SQL3 11.9 <referential constraint definition>
>        *    Gereral rules 2) a):
>
>
>
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