Rich, it looks to me like your SQL should work - I've never used
'!IN', always used 'NOT IN' instead, but that's not to say it won't
work.

I do note that you're missing the join criteria for your tables
classes, signups ...

Am I misunderstanding your question?

Dan

On 10/5/06, Rich <[EMAIL PROTECTED]> wrote:
Hi folks.  Any suggestions on the following?

If a student signs up for classes, I don't want them viewing those
classes so they can choose them again.  So I want to take out their
'signups' from the master class list.

"select classnumber, classnumbersignup
        from classes, signups
        where classnumber !IN (select classnumbersignup from signups where
userid = [$myID])
        and mytype = 'yellow'";

I don't want to have to rely on middleware for this.

Cheers




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