"George Pavlov" <gpavlov@mynewplace.com> writes:
> so is it safe to say that an index that has
> pg_stat_user_indexes.idx_scan, pg_stat_user_indexes.idx_tup_read, and
> pg_stat_user_indexes.idx_tup_fetch all equal to 0 has not been used
> (since stats have been reset)?
> i have a bunch of those and all of them have
> pg_statio_user_indexes.idx_blks_read > 0 and most of those have
> pg_statio_user_indexes.idx_blks_hit > 0. when/why would that happen?
You have stats_block_level turned on, but not stats_tuple_level?
You have a lot of searches that find no rows?
regards, tom lane