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单项选择题现有表Employee,字段:id(int)、firstname(varchar)、lastname(varchar);以下sql语句错误的是()

A、select firstname+’.’+lastnameas’name’from employee

B、select firstname+’.’+lastname=’name’from employee

C、select’name’=firstname+’.’+lastnamefrom employee

D、select firstname,lastname from employee

  • B
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