On 20/01/2012 12:43, Brice Maron wrote: > Hi, > > i've discovered something kind of weird while developing my app... > I was trying to fetch some records in a table using a function immutable. > In my interface it was really slow and while i was in a psql it was > really fast ... > > After some research i've found out that it was caused by the bind > parameter "forcing" the immutable function to execute each time my > query gets a record. > > while i know that the value can't be known at planning time the > difference between the binded / not binded is quite enormous... > > i've isolated a test case here.... > > https://gist.github.com/e93792540cb3a68054c9 > > (it happens at least in pg 8.4 and 9.1.2) > > > What do you think about it... bug? feature? how can i avoid it?
How about: PREPARE test (varchar) as select * from test where a = $1; EXECUTE test(test_immutable(1)); Cheers -- Matteo Beccati Development & Consulting - http://www.beccati.com/ -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
