On 7 jun 2008, at 05.04, Andreas wrote:
Is there a way to remove the default-rows if there exists a fk0
row that has the same group_nr ?
Yes, use a correlated sub-query:
SELECT * FROM mytab m1
WHERE fk = 994010 OR (class_nr = 40 AND fk = 0 AND NOT EXISTS (SELECT
1 FROM mytab m2 WHERE
Hi,
I need some magic with alternative rows.
I've got a table with rows relating another table.
mytab (id, name, group_nr, class_nr, fk)
SELECT * FROM mytab
WHERE (fk = 994010)
OR ((class_fk = 40) AND (fk = 0))
994001, Tick, 1, 40, 994010
4001, Reporting, 1,
