Hi. thanks ! but nop... SELECT id_ingenio,cantidad FROM detalle_transaccion WHERE cantidad IS NULL; Empty set (0.00 sec)
and with coalesce nop :-( it's the same problem.... mysql> select id_ingenio, (select case when sum( coalesce(cantidad,NULL) ) is null then 0 else sum(cantidad) end from detalle_transaccion where id_ingenio=ingenio.id_ingenio group by id_ingenio) as cantidad from ingenio LIMIT 5; +------------+----------+ | id_ingenio | cantidad | +------------+----------+ | 1 | NULL | | 2 | NULL | | 3 | NULL | | 4 | 2622.77 | | 5 | NULL | +------------+----------+ 5 rows in set (0.00 sec) the problem is that my sub select returns a empty result, it isn't a null value, but somthing straing is happening if i make only the sub select look mysql> select case when sum(cantidad) is null then 0 else sum(cantidad) end as a from detalle_transaccion where id_ingenio=1 group by id_ingenio; Empty set (0.00 sec) i think that the group by is doing this... becouse look select case when sum(cantidad) is null then 0 else sum(cantidad) end as a from detalle_transaccion where id_ingenio=1; +------+ | a | +------+ | 0 | +------+ 1 row in set (0.01 sec) what can i do ?.... thanks !!!! -- http://www.obed.org.mx ---> blog -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]
