Stephan Szabo <sszabo(at)megazone23(dot)bigpanda(dot)com> writes:
>> In fact, there's a good argument that we should require the two columns
>> to have the exact same datatype.
> I think the spec only requires them to be comparable
Oh, in that case never mind ... but I'd still favor checking for
existence of the comparison operator right away.
regards, tom lane
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