Re: Outer joins
От | Emils |
---|---|
Тема | Re: Outer joins |
Дата | |
Msg-id | 9dcb6fa40604290133l47b67930n@mail.gmail.com обсуждение исходный текст |
Ответ на | Outer joins ("Michael S. Kelly" <michaelk@axian.com>) |
Список | pgsql-sql |
(damn gmail, sorry about priv mail earlier) > Stephan Szabo <sszabo@megazone.bigpanda.com>: > I think putting a test in an ON clause associated with the join (using > something like ... left join object_values ov1 ON(ov.obj_id = ov1.obj_id > and ov1.att_id=8) rather than where will consider both as part of the join > and null extend even if there are obj_id matches if none of those have > att_id=8. Thanks, that worked! 2006/4/28, Tom Lane <tgl@sss.pgh.pa.us>: > Emils <gnudiff@gmail.com> writes: > > The table structure is: > > > object_values > > ========== > This isn't an outer-join problem, it's a crosstab problem. Try the > crosstab functions in contrib/tablefunc. > Thanks, I looked into it, unfortunately I might have to have also a solution for where installing contrib stuff is not possible. Emils
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