| From: | Josh Berkus <josh(at)agliodbs(dot)com> |
|---|---|
| To: | sqllist <pgsql-sql(at)postgresql(dot)org> |
| Subject: | Re: RE: Help with query. (*) |
| Date: | 2001-01-17 20:57:49 |
| Message-ID: | 3A66074D.827227D0@agliodbs.com |
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| Thread: | |
| Lists: | pgsql-general pgsql-sql |
Mike,
In that case, you want to use this construction:
DELETE FROM a
WHERE EXISTS (
SELECT 1 FROM b
WHERE b.1 = a.1
AND b.2 = a.2
AND b.3 = a.3 );
Of course, a good primary keying system would make this somewhat less
complex ...
-Josh Berkus
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