On Fri, 2007-03-09 at 20:37 +0000, Simon Riggs wrote:
> > I wonder if calling RelationGetNumberOfBlocks on every seq scan becomes 
> > a performance issue for tiny tables with for example just 1 page. It 
> > performs an lseek, which isn't free.
> Jeff's patch does this also, for similar reasons.

As Tom pointed out, the value is already in memory by the time it gets
to my code. My code just reads that value from memory.

        Jeff Davis

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