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A.DOUBLE
B.INT
C.SET
D.FLOAT

A.select * from products where vend_id=1002 or vend_id=1003
B.select * from products where vend_id in（1002，1003）；
C.select * from products where vend_id not in（1004，1005）；
D.select * from products where vend_id=1002and vend_id=1003