On Thursday 17 Jul 2003 3:45 pm, Bill Moran wrote: > Hello all, > > I'm putting together a database that has me wondering about the interaction > of ANALYZE with indices. I guess the basic question is: are indices > affected by the results of ANALYZE. > > The particular application I've got is doing a batch insert of lots of > records. For performance, I'm dropping the indexes on the table, doing the > inserts, then recreating the indexes a then doing a VACUUM ANALYZE. > Specifically, I'm wondering if I should do the ANALYZE before or after I > recreate the indexes, or whether it matters.
I don't think it matters - the analyse looks at the data, and then when you run a query the planner estimates how many rows each clause will require and checks if there is an index that will help. -- Richard Huxton ---------------------------(end of broadcast)--------------------------- TIP 1: subscribe and unsubscribe commands go to [EMAIL PROTECTED]
