Problems with distinct - Mailing list pgsql-sql

From Andreas Joseph Krogh
Subject Problems with distinct
Date
Msg-id 200602132019.30393.andreak@officenet.no
Whole thread Raw
Responses Re: Problems with distinct  (Tom Lane <tgl@sss.pgh.pa.us>)
List pgsql-sql
Any idea why this works:

SELECT distinct(g.groupname), g.id, g.p_id FROM onp_group g, onp_group g2
WHERE g.id IN(SELECT g2.id UNION SELECT group_id FROM onp_group_children WHERE
child_id = g2.id)
AND g2.id IN(1,2,109,105, 112);

And not this:

SELECT g.id, g.p_id, distinct(g.groupname) FROM onp_group g, onp_group g2
WHERE g.id IN(SELECT g2.id UNION SELECT group_id FROM onp_group_children WHERE
child_id = g2.id)
AND g2.id IN(1,2,109,105, 112);

The *only* difference is that the distinct-clause changed place...

--
Andreas Joseph Krogh <andreak@officenet.no>
Senior Software Developer / Manager
gpg public_key: http://dev.officenet.no/~andreak/public_key.asc
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