"Grzegorz TaĆ czyk" <[EMAIL PROTECTED]> writes: > SELECT * FROM table WHERE id = myfunction('x', 10); > There is an index created on id column, but query planner doesn't use it.
Have you declared myfunction as IMMUTABLE or STABLE? If it's volatile then optimizing to an indexscan is incorrect and the planner won't do it. regards, tom lane ---------------------------(end of broadcast)--------------------------- TIP 1: if posting/reading through Usenet, please send an appropriate subscribe-nomail command to [EMAIL PROTECTED] so that your message can get through to the mailing list cleanly