Re: 'GROUP BY' / 'DISTINCT' interaction bug?

"Mark Hollomon" <mhh@nortelnetworks.com> writes:
> select distinct on (c, i) c, count(i) from t group by c;
> ERROR:  Attribute t.i must be GROUPed or used in an aggregate function

Why do you think that's a bug?  The DISTINCT clause requires use of
the ungrouped value of i, doesn't it?

			regards, tom lane