单选题在Oracle中,你需要创建索引提高薪水审查的性能,该审查要对员工薪水提高12个百分点后进行分析处理,下面哪个createindex命令能解决此问题()。ACREATE INDEX my_idx_1 ON employee(salary*1.12)BCREATE UNIQUE INDEX my_idx_1 ON employee(salary)CCREATE BITMAP INDEX my_idx_1 ON employee(salary)DCREATE INDEX my_idx_1 ON employee(salary)REVERSE
单选题
在Oracle中,你需要创建索引提高薪水审查的性能,该审查要对员工薪水提高12个百分点后进行分析处理,下面哪个createindex命令能解决此问题()。
A
CREATE INDEX my_idx_1 ON employee(salary*1.12)
B
CREATE UNIQUE INDEX my_idx_1 ON employee(salary)
C
CREATE BITMAP INDEX my_idx_1 ON employee(salary)
D
CREATE INDEX my_idx_1 ON employee(salary)REVERSE
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