SELECT语句中使用distinct子句表示查询结果中（）。 - 查题网

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成人高等教育 / 数据库原理

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SELECT语句中使用distinct子句表示查询结果中（）。

A、
A.属性名都不相同
B、
B.去掉重复的列
C、
C.去掉重复的行
D、
D.属性值都不相同

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