On 19 April 2011 23:57, Thom Brown <thom@linux.com> wrote:
> Hi,
>
> I tried applying a collation to a GROUP BY clause without applying the
> collation to the corresponding column in the SELECT clause.
>
> postgres=# SELECT things, count(*) FROM stuff GROUP BY things COLLATE "C";
> ERROR: column "stuff.things" must appear in the GROUP BY clause or be
> used in an aggregate function
> LINE 1: SELECT things, count(*) FROM stuff GROUP BY things COLLATE "...
>
> Firstly, does it even make sense for a GROUP BY clause to accept COLLATE?
>
> Even if it does, this error message doesn't explain the problem, being
> that the column with the necessary collation doesn't appear in the
> SELECT.
Erk, please ignore. Wrong list.
--
Thom Brown
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