is there a possibility for creating views or temp tables in memory to
avoid disk io when user makes select operations?
you might also want to look into "materialized views":
http://jonathangardner.net/PostgreSQL/materialized_views/matviews.html
http://www.varlena.com/varlena/GeneralBits/64.php
this helped us alot when we had slow queries involving many tables.
cheers,
thomas
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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
