PostgreSQL versions: 7.4.3, 8.0.0beta1
Joins against set-returning functions can be slow. Here's a simple
example (in 8.0.0beta1, the gen_series function can be replaced
with generate_series):
CREATE FUNCTION gen_series(INTEGER, INTEGER) RETURNS SETOF INTEGER AS '
DECLARE
xstart
Michael Fuhr [EMAIL PROTECTED] writes:
Is the planner doing something wrong here?
Hard to see how it can be very smart with no idea about what the
function is going to return :-(.
I'd say that the mergejoin plan is actually a good choice given the
limited amount of info, because it has the
