Jon Nelson <jnelson+pgsql@xxxxxxxxxxx> writes: > The most recent experiment shows me that, unless I create whatever > indexes I would like to see used *before* the large (first) update, > then they just don't get used. At all. You're making a whole lot of assertions here that don't square with usual experience. I think there is some detail about what you're doing that affects the outcome, but since you haven't shown a concrete example, it's pretty hard to guess what the critical detail is. regards, tom lane -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
