Can someone set me straight on whether the following statements are true in
postgresql-8.1.x and if they aren't true, what queries might I need to run to
find these answers?
Also would be interested to know if these changed in a certain version of
postgresql.
The following query shows all indexes which are not used.
select schemaname,relname,indexrelname,idx_tup_read,idx_tup_fetch from
pg_stat_user_indexes where idx_tup_read = 0;
The following query shows all indexes which have differing values between
idx_tup_read and idx_tup_fetch indicating indexes which likely need rebuilt
via REINDEX:
select schemaname,relname,indexrelname,idx_tup_read,idx_tup_fetch from
pg_stat_user_indexes where idx_tup_read != idx_tup_fetch;
--
Jeff Frost, Owner <[EMAIL PROTECTED]>
Frost Consulting, LLC http://www.frostconsultingllc.com/
Phone: 650-780-7908 FAX: 650-649-1954
---------------------------(end of broadcast)---------------------------
TIP 9: In versions below 8.0, the planner will ignore your desire to
choose an index scan if your joining column's datatypes do not
match
