回复 3楼 tlliqi
update aa set a1=(select a1 from bb where aa.a3=bb.b5 and aa.a4=bb.b6)update aa set a7=(select c1 from cc where aa.a5=cc.c5 and aa.a6=cc.c6)
这两单独可以使用，但update aa set a1=(select a1 from bb where aa.a3=bb.b5 and aa.a4=bb.b6) a7=(select c1 from cc where aa.a5=cc.c5 and aa.a6=cc.c6)
就不行
