On Sat, 22 Mar 2003, Tom Lane wrote:

> Joe Conway <[EMAIL PROTECTED]> writes:
> > Pretty handy! But I couldn't find it documented anywhere -- is it?
> 
> I think Thomas did that in one of his last batches of changes, and then
> disappeared without adding the documentation.  Feel free to contribute
> some.
> 
> I believe it is supposed to be a SQL99 feature, so you might see if the
> spec sheds any light ...

8.14 <type predicate> to be exact.

Gavin


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