This is what collecting and managing statistics[0][1] is about. I know Oracle and Postgres implements this -- don't know about SQLServer, MySQL, etc... [0] ht

This is what collecting and managing statistics[0][1] is about. I know Oracle and Postgres implements this -- don't know about SQLServer, MySQL, etc... [0] http://docs.oracle.com/cd/B19306_01/server.102/b14211/stats.htm#g49431 http://docs.oracle.com/cd/B19306_01/server.102/b14211/stats.... [1] http://www.postgresql.org/docs/current/static/runtime-config-query.html http://www.postgresql.org/docs/current/static/runtime-config... edit: found/added info for postgres