Select * From
(Select A,B,C,D,E,(Select Count(*) From Table a Where a.B=b.B And a.A<b.A)+1 as ID From Table b) t
Where t.ID<=2
(Select A,B,C,D,E,(Select Count(*) From Table a Where a.B=b.B And a.A<b.A)+1 as ID From Table b) t
Where t.ID<=2
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