Create View ABCDE
AS
select A.A1,A.A2,B.B1,B.B2,C.C1,C.C2,D.D1,D.D2,E.E1,E.E2 from A join B on A.A1=B.A1
join C on A.A1=C.A1
join D on B.B1=D.B1
join E on C.C1=E.C1
AS
select A.A1,A.A2,B.B1,B.B2,C.C1,C.C2,D.D1,D.D2,E.E1,E.E2 from A join B on A.A1=B.A1
join C on A.A1=C.A1
join D on B.B1=D.B1
join E on C.C1=E.C1
解决方案 »
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