On Tue, Apr 5, 2011 at 3:04 PM, Jesper Krogh wrote:
> I initially set out to put some numbers on "why" the visibillity
> map was important for "select count(*)", primarily to give some
> feedback to Simon Riggs stating:
> "Your tests and discussion remind me that I haven't yet seen any tests
> tha
Hi.
I initially set out to put some numbers on "why" the visibillity
map was important for "select count(*)", primarily to give some
feedback to Simon Riggs stating:
"Your tests and discussion remind me that I haven't yet seen any tests
that show that index-only scans would be useful for performa
