题目内容

使用SELECT语句可以查询user表中的权限信息,但是该语句不仅需要指定用户,还需要指定查询的权限。

A. 对
B. 错

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下面选项中,用于控制修改表结构或重命名表的权限是

ALTER权限
B. ALERT权限
C. RENAME权限
D. UPDATE 权限

下面实现收回user4用户INSERT权限的语句中,正确的是

A. REVOKE INSERT ON *.* FROM 'user4'@'localhost';
B. REVOKE INSERT ON %.% FROM 'user4'@'localhost';
C. REVOKE INSERT ON *.* TO 'user4'@'localhost';
D. REVOKE INSERT ON %.% TO 'user4'@'localhost';

下面选项中,可实现比SELECT语句更方便查询用户权限信息的语句是

A. SHOW GRANTS语句
B. GRANT语句
C. SELECT GRANTS语句
D. GRANT USER语句

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