"Kevin Grittner" <[EMAIL PROTECTED]> writes:
> Since you were so confident it couldn't be the outer join, I went
> looking for what else I changed at the same time.  I eliminated the code
> referencing that table, which contained an OR.  I've seen ORs cause
> nasty problems with optimizers in the past.  I took out the OR in the
> where clause, without eliminating that last outer join, and it optimized
> fine.

I don't think that OR is relevant either, since again it's present in
both the well-optimized and badly-optimized variants that you posted.

                        regards, tom lane

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