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单项选择题要查询st_info表中姓"王"且单名的学生情况，可用（）命令。

A、SELECT * FROM st_info WHERE st_name LIKE ´王%´

B、SELECT * FROM st_info WHERE st_name LIKE ´王_´

C、SELECT * FROM st_info WHERE st_name=´王%´

D、SELECT * FROM st_info WHERE st_name=´王__´

  • B

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