题目内容（请给出正确答案）

[单选题]

设有如下语句： CREATE INDEX in_dept ON tb_dept（telephone（6), DESC); 以下关于该语句的叙述中，正确的是________。

A.根据telephone属性前6个字符创建普通索引

B.根据telephone属性前6个字符建立唯一性索引

C.在telephone属性上建立聚簇索引

D.根据前6条记录创建索引

提问人：网友g51015 发布时间：2022-01-07

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· 有4位网友选择 B，占比44.44%
· 有2位网友选择 D，占比22.22%
· 有2位网友选择 A，占比22.22%
· 有1位网友选择 C，占比11.11%

ABCD

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