D. Dante Lorenso wrote:
But if I want to find all the items which are not in any folder, I want:
SELECT *
FROM mytable
WHERE folder_id IS NULL;
I don't have any folder_id 0, so on a URL I might do this:
http://xyz/page.php?fid=123
http://xyz/page.php?fid=0
SELECT * FROM mytable WHERE COALESCE( folder_id, 0 ) = 0;
--
Lew
---------------------------(end of broadcast)---------------------------
TIP 9: In versions below 8.0, the planner will ignore your desire to
choose an index scan if your joining column's datatypes do not
match
