On Fri, 18 Jul 2008, Dennis Brakhane wrote:
The "fast" server makes a much more accurate estimation of the number of rows to expect (4 rows are returning, 1 was estimated). The "slow" server estimates 1151 rows. Try running ANALYZE on the slow one
You're quite right. I probably didn't mention that the slow one has been analyzed several times. In fact, every time adjusted the statistics target for that column I analyzed, thus the eventually better, but still inaccurate estimates toward the bottom of the post.
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