Greg Stark <gsstark(at)mit(dot)edu> writes:
> I don't see how you're in the clear. If session A does an insert and it
> doesn't see a duplicate and doesn't commit, but then B does an insert and sees
> the duplicate from A and marks his tentative, and then commits, shouldn't B's
> commit succeed?
No. B, being the second to get there, has to wait to see if A commits
or not. This is true already and it wouldn't change. We would
however postpone the wait until B's commit time.
regards, tom lane
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