Re: foreign keys - script
От | Emile D Snyder |
---|---|
Тема | Re: foreign keys - script |
Дата | |
Msg-id | Pine.LNX.4.10.10008291330500.19383-100000@everclear.cosource.com обсуждение исходный текст |
Ответ на | Re: foreign keys - script ("Ross J. Reedstrom" <reedstrm@rice.edu>) |
Список | pgsql-general |
This question was me actually, and thanks for the info! Is the development list archived somewhere publicly accessible? thanks, -emile On Tue, 29 Aug 2000, Ross J. Reedstrom wrote: > As to your other question, regarding LEFT JOIN: that's 'not yet > implemented'. IF you don't have too many of them, or their not too > complicated, you can work around it with a UNION, such as: > > SELECT a,b from foo,bar where foo.b = bar.b > UNION > SELECT a,NULL from foo where foo.b is null; > > That gives you a LEFT JOIN on foo and bar on field 'b'. > > There's currently some discussion going on on HACKERS concerning what > will be needed to make OUTER JOINs happen for 7.1 (current talk is > release sometime in November) > > Ross > -- > Ross J. Reedstrom, Ph.D., <reedstrm@rice.edu> > NSBRI Research Scientist/Programmer > Computer and Information Technology Institute > Rice University, 6100 S. Main St., Houston, TX 77005 >
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