请帮我看看这句SQL语句怎么改?alter table Storage_kc add outQuantity as (SELECT SUM(Quantity_ck) FROM
请帮我看看这句SQL语句怎么改?
alter table Storage_kc add outQuantity as (SELECT SUM(Quantity_ck) FROM (SELECT Quantity_ck FROM ck1_ls UNION ALL SELECT Quantity_ck FROM ck2_sp UNION ALL SELECT Quantity_ck FROM ck3_jz ))
create function f_All() returns int as begin declare @s int SELECT @s=SUM(Quantity_ck) FROM (SELECT Quantity_ck FROM ck1_ls UNION ALL SELECT Quantity_ck FROM ck2_sp UNION ALL SELECT Quantity_ck FROM ck3_jz ) aa return @s end go alter table Storage_kc add outQuantity as dbo.F_ALL()