"Jim C. Nasby" <[EMAIL PROTECTED]> writes:
> What's with the second workMem setting?

That's the second sort bucket for recently-dead tuples (which still have
to be indexed, but shouldn't be fed into the unique-checking sort).
We assume there won't be a lot of them, hence don't use
maintenance_work_mem to size that sort.

                        regards, tom lane

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