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标题: 这题答案是下面哪一个？不能确定是BD，还是AB。 [打印本页]

作者: cz170422 时间: 2020-2-18 09:05
标题: 这题答案是下面哪一个？不能确定是BD，还是AB。

What is true about non-equijoin statementperformance?

A) The Oracle join syntax performs betterthan the SQL: 1999 compliant ANSI join syntax.

B) Table aliases can improve performance.

C)The BETWEEN condition always performs lesswell than using the >= and <= conditions.

D) The join syntax used makes no differenceto performance.

E) The BETWEEN condition always performsbetter than using the >=land k=conditions.

答案：BD？AB?

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