On Thursday 27 Jun 2002 10:52 am, Jörg Holetschek wrote:
> Hi folks,
>
> I have a problem with a CHECK clause that doesn't seem to work properly.
> WHEN ((focus <> NULL) AND (epilepsy_class = 'f')) THEN
> WHEN ((focus <> NULL) AND (epilepsy_class IN ('g',
> It shouldn't be possible to insert a value into focus when epilepsy_class
> has one of the values 'g' or 'n'. But it is. Can anyone help?
Should that not be "IS NOT NULL"?
- Richard Huxton
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