"Marie-Christine Fauvet" <[EMAIL PROTECTED]> wrote:
> I'd like to program in the SQL language supported by MySQL the following
> query:
>
> select R.A, R.B from R
> minus
> select S.A, S.B from S
>
> It doesn't work (syntax error, set operators are not supported).
> So, I've tried:
>
> select R.A, R.B from R
> where not exists
> (select * from S
> where S.A = R.A and S.B = R.B)
>
> I've tried as well:
>
> select R.A, R.B from R
> where (R.A, R.B) not in
> (select S.A, S.B from S)
>
> Both of the above queries don't work.
MySQL doesn't yet support subselects. I believe they're planned for v4.1.
> Does somebody have any idea about that? I want to avoid programming the
> minus operator in an host language ;-)
I think you may have to handle this in the application instead of the db.
--
Steve Werby
President, Befriend Internet Services LLC
http://www.befriend.com/
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