On Wed, Jul 8, 2009 at 2:50 AM, Gnanam<gnanam@xxxxxxxxxx> wrote: > I'm using both IN and ANY() operators extensively my application. Can > anybody answer me on the following questions: > 1) Which operator is advantage over the another, interms of performance? > 2) If I've indexed these columns, will both the operators make use of index > scanning? > 3) Also I read from PostgreSQL documentation that there is a limit in > passing values to IN operator. As far as I remember, it is 1000, but then I > don't have the web link justifying this handy now. If yes/no, is it > applicable for ANY operator also? > 4) Is there any difference in framing queries at query planner level? You might want to have a look at this email, and Tom Lane's reply: http://archives.postgresql.org/message-id/603c8f070810251131m4e9cf4efl8c6e877d1fbd2022@xxxxxxxxxxxxxx ...Robert -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
