Re: operator exclusion constraints [was: generalized index constraints] - Mailing list pgsql-hackers

Robert Haas <robertmhaas@gmail.com> writes:
> On Wed, Sep 23, 2009 at 1:47 PM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
>> I think that USING is just about as content-free as WITH in this
>> particular example --- it doesn't give you any hint about what the
>> purpose of the operator is.

> USING might be just as content-free as WITH, but USING OPERATOR seems
> clearly better, at least IMO.

It's not enough better to justify the conflict with USING opclass, IMO.

An idea that just struck me is CHECK WITH, ie
EXCLUSION (expr CHECK WITH operator)
        regards, tom lane