1、以root身份登錄mysql
mysql -u root -p
2、查看用戶權限(root)
SHOW GRANTS for 'root'@'localhost';
3、創建兩個用戶test1 和 test2 (都是在localhost下,密碼定義爲123456,自己可以根據實際情況設置)
CREATE USER 'test1'@'localhost' IDENTIFIED BY '123456';
CREATE USER 'test2'@'localhost' IDENTIFIED BY '123456';
4、查看mysql有那些用戶
select host,user from mysql.user;
5、給用戶 test1 授予權限(UPDATE,INSERT)
GRANT <privileges> ON <databasename.tablename> TO '<username>'@'localhost' WITH GRANT OPTION;
(WITH GRANT OPTION 表示被授權用戶可以爲其他用戶授權)
GRANT UPDATE,INSERT ON newstu.course TO 'test1'@'localhost' WITH GRANT OPTION;
6、查看用戶權限(test1)
SHOW GRANTS for 'test1'@'localhost';
7、退出root登錄,以test1身份登錄(如果沒有授權只能看到默認的數據庫)
mysql -u test1 -p
8、test1給用戶test2授權(UPDATE)
GRANT UPDATE ON newstu.course TO 'test2'@'localhost' WITH GRANT OPTION;
9、重新以root身份登錄,取消授權
REVOKE <privileges> ON<databasename.tablename> FROM '<username>'@'localhost';
REVOKE UPDATE ON newstu.course FROM 'test1'@'localhost';
10、刪除用戶
DROP USER '<username>'@'localhost'
DROP USER 'test1'@'localhost'
DROP USER 'test2'@'localhost'