"Steven Flatt" <steven.flatt@gmail.com> writes:
> I can fix this problem by using CREATE TEMP TABLE ... LIKE instead of CREATE
> TEMP TABLE ... AS.
That seems ... um ... bizarre. Now are you able to put together a
self-contained test case? Seems like we could have two independent bugs
here: first, why (and how) is the temp table different, and second how
does that result in the observed performance problem.
regards, tom lane