Cita:
Iniciado por Heimish2000 
Algo así:
Código SQL:
Ver originalSELECT SUM(SUBSUMA)
FROM
(SELECT SELECT SUM(a.superficie) AS SUBSUMA
FROM a
WHERE a.b_id = b.id
AND b.c_id = c.id)
Hola buenas,
Me dice:
Error al ejecutar la consulta. Every derived table must have its own alias
Un saludo y gracias!