[EMAIL PROTECTED] writes: > explain select * from cim where utod_cim_id=0; > NOTICE: QUERY PLAN: > Seq Scan on cim (cost=0.00..6555.41 rows=253633 width=118) > The query optimizer does not use my index..
How many rows are there where utod_cim_id=0? The planner guesses that there are a lot (253633, to be exact) and concludes that using the index is not profitable for this query. regards, tom lane ---------------------------(end of broadcast)--------------------------- TIP 5: Have you checked our extensive FAQ? http://www.postgresql.org/users-lounge/docs/faq.html