问题详情

Given that tables T1 and T2 contain the following rows: Table T1: C1 C2 5 4 5 2 5 5 Table T2: C1 C2 5 1 5 2 5 3 Which of the following queries will return only those rows that exist in T1 and not in T2?（）

A、SELECT * FROM T1 MINUS SELECT * FROM T2

B、SELECT * FROM T1 EXCEPT SELECT * FROM T2

C、SELECT * FROM T2 UNION EXCEPT SELECT * FROM T1

D、SELECT * FROM T1 NOT EXISTS SELECT * FROM T2

时间：2022-01-03 00:31 关键词： IBM(000-730)

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