delete * from a
insert into a
select [user].x,[user].y,c.z from [user],c where .........
改為﹕insert into a
delete * from a
select [user].x,[user].y,c.z from [user],c where .........
insert into a
select [user].x,[user].y,c.z from [user],c where .........
改為﹕insert into a
delete * from a
select [user].x,[user].y,c.z from [user],c where .........
insert into a
select aa.x,aa.y,c.z from 库名..[user],c where .........
insert into a
select aa.x,aa.y,c.z from [user] a ,c where .........