felix-accts-pgsql@xxxxxxxxxxx writes: > EXPLAIN ANALYZE doesn't show the slow timing > because it requires values, not $n placeholders, To analyze the plan used for a parameterized query, try PREPARE foo(...) AS SELECT ... $n ... EXPLAIN ANALYZE EXECUTE foo(...) But I already know what you're going to find: the planner's estimates for the range query are not going to be very good when it has no idea what the range bounds are. This is a situation where it may be best to absorb the hit of re-planning each time instead of using a generic parameterized plan. regards, tom lane
