"Francisco Reyes" <[EMAIL PROTECTED]> writes:
> So far in this data set almost every time bitmap scans are used the queries
> do worse, much worse. I had one extreme case where a sequential scan would
> finish in 20 minutes and the same query using bitmap scans would take over
> a day to finish.

That's fairly hard to believe.  Care to offer some details?

                        regards, tom lane

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