Re: [PERFORM] Slow "Select count(*) ..." query on table with 60 Mio. rows

Thu, 14 Jan 2010 08:01:50 -0800 

Kevin Grittner wrote:

Matthew Wakeling <[email protected]> wrote:

This is an FAQ.
I just added it to the wiki FAQ page: http://wiki.postgresql.org/wiki/FAQ#Why_is_.22SELECT_count.28.2A.29_FROM_bigtable.3B.22_slow.3F 


Maybe you could add a short note why an estimation like from the 
pg_class table is usually enough.



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