MySQL增加用户

1、增加用户:       CREATE USER 'user_name'@'%' IDENTIFIED BY '123456'; 2.增加权限: GRANT SELECT ON *.* TO 'user_name'@'%' WITH GRANT OPTION; 3.删除用户: drop USER 'user_name'@'%'; 4.查询用户: SELECT * FROM mysql.u
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