Kevin Grittner wrote:
Matthew Wakeling <matthew@xxxxxxxxxxx> wrote: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.3FThis is an FAQ.
Maybe you could add a short note why an estimation like from the pg_class table is usually enough.
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