Re: joins INNER, OUTER, LEFT, RIGHT, FULL, ...
От | Jaime Casanova |
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Тема | Re: joins INNER, OUTER, LEFT, RIGHT, FULL, ... |
Дата | |
Msg-id | 20041124050641.86985.qmail@web50004.mail.yahoo.com обсуждение исходный текст |
Ответ на | joins INNER, OUTER, LEFT, RIGHT, FULL, ... ("Roderick A. Anderson" <raa@mailporter.net>) |
Ответы |
Re: joins INNER, OUTER, LEFT, RIGHT, FULL, ...
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Список | pgsql-admin |
--- "Roderick A. Anderson" <raa@mailporter.net> escribió: > Be gentle as I come from an Oracle background a long > time ago. > > I am trying to join several tables with a couple of > tables having a one > to many relationship. I got one query working > pretty well but the issue > comes about when I add one more table with a > one-to-one relationship. I > get a semi/pseudo Cartesian join. > I'm not asking for the exact solution but a pointer > to a _good_ > reference on complex joins. My searching on the > PostgreSQL site and > Google only turn up examples of simple joins. I did > forget to look at > the two PostgreSQL books I have at home -- Bruce's > and Practical > PostgreSQL -- last night so if there are some in > them a light tap with > the clue-stick will suffice. > > http://www.postgresql.org/docs/7.4/static/queries-table-expressions.html#QUERIES-JOIN What do you mean with *complex joins*? regards, Jaime Casanova _________________________________________________________ Do You Yahoo!? Información de Estados Unidos y América Latina, en Yahoo! Noticias. Visítanos en http://noticias.espanol.yahoo.com
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