Re: Checking number of entries

At 00:22 29/09/00 -0400, Tom Lane wrote:
>
>Quite aside from implementation shortcomings, there are some big
>definitional issues with subselects in constraints --- just exactly
>what are they constraining?  See past discussions in the archives.
>

I've done a search for 'select constraint', with no obvious matches. My
naieve approach would be that a CHECK constraint should evaluate 'true'
assuming the data change was commited/applied (depending on evaluation
time). The CHECK is evaluated like an AFTER <action> trigger.

I presume I am missing something...


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