"Merlin Moncure" <[EMAIL PROTECTED]> writes:
> now, if ps ends up using a index scan on t, everything is ok. However,
> if ps does a seqscan, f executes for every row on t examined until the
> [expr] criteria is met. Is this a bug?
Works for me.
regression=# create function f(int) returns int as '
regression'# begin
regression'# raise notice ''f(%)'', $1;
regression'# return $1;
regression'# end' language plpgsql;
CREATE FUNCTION
regression=# select f(unique2) from tenk1 where unique2%2 = 1 limit 2;
NOTICE: f(1)
NOTICE: f(3)
f
---
1
3
(2 rows)
regression=# prepare ps as
regression-# select f(unique2) from tenk1 where unique2%2 = 1 limit 2;
PREPARE
regression=# execute ps;
NOTICE: f(1)
NOTICE: f(3)
f
---
1
3
(2 rows)
regression=#
You sure you aren't using f() in the WHERE clause?
regards, tom lane
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