Re: How to delete intersection of two tables?

In article <1993Apr14.074621.7524_at_daimi.aau.dk>, ludvig_at_daimi.aau.dk (Peter Hubel) writes:
> Hi netters,
>
> I'm quite a novice into Oracle SQL and I have this
> problem.
>
> I have two tables (T1 and T2) which have two fields
> (let's call them A and B) in common. The goal is to
> remove all rows in T1 which match a row in T2 w.r.t
> A and B.
>
> I've tried something like
>
> DELETE FROM T1 x
> WHERE A = (SELECT A FROM T2 y WHERE T1.B = T2.B)
>
> but it doesn't seem to work at all.
>
> Any suggestions, anybody?

DELETE FROM t1
 WHERE EXISTS (SELECT 1

                 FROM T2
                WHERE T1.A=T2.A
                  AND T1.B=T2.B)

kind regards

Mike

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