Peter Eisentraut wrote:
> On 2000-01-21, Bruce Momjian mentioned:
>
> > > Is there a way to use the max aggregate on an oid field? When I try on
> > > 6.5.3, I get the following error message:
> > >
> > > test=> select max(uid) from user_base;
> > > ERROR: Unable to select an aggregate function max(oid)
> > >
> > > If there's any work-around, please let me know.
> > > Marc
> > >
> >
> > Added to TODO:
> >
> > * allow aggregates on oid
>
> We already had a TODO item for this and came to the conclusion that
> * Make type equivalency apply to aggregates
> will solve this.
>
> For right now the user could do the following:
>
> INSERT INTO pg_aggregate VALUES ('max', <your user id>, 'int4larger', '-',
> '-', 26, 26, 0, 26, NULL, NULL);
>
We need also aggregates for data type TIME
MAX(time)
MIN(time)
José
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