# systemctl start mariadb.service #啓動數據庫# mysql -u root -p #進入數據庫# MariaDB [(none)]> alter user 'root'@'localhost' identified by '***'; #修改root密碼# MariaDB [(none)]> show status; #顯示數據庫的狀態信息# MariaDB [(none)]> use mysql; #選擇數據mysql
用戶管理:
# MariaDB [mysql]> select user from user; #查看所有用戶# MariaDB [mysql]> create user bob; #創建用戶# MariaDB [mysql]> drop user bob; #刪除用戶# MariaDB [mysql]> show grants for bob; #查看用戶安全權限# MariaDB [mysql]> grant select on *.* to bob; #授予用戶bob的 select 訪問權限# MariaDB [mysql]> revoke select on *.* to bob; #取消用戶bob的 select 訪問權限# MariaDB [mysql]> set password for bob = password('***'); #修改用戶bob的密碼# MariaDB [mysql]> set password = password('***'); #修改當前用戶的密碼
創建數據庫 abc:
# MariaDB [mysql]> create databases abc; #創建數據庫 abc# MariaDB [mysql]> use abc; #選擇數據庫 abc# MariaDB [mysql]> show databases; #顯示數據庫列表# MariaDB [mysql]> show tables; #顯示數據庫內的表# MariaDB [mysql]> show columns from ***; #顯示錶列# MariaDB [mysql]> describe ***; #顯示錶列的快捷方式# MariaDB [mysql]> exit or quit #退出數據庫
數據庫服務的狀態、開啓、關閉:
# service mysql.server status# service mysql.server start# service mysql.server stop
2.導入數據庫文件
導入數據庫文件 abc.sql:
# mysql -uroot -p*** abc<文件名.sql
導出數據庫文件 abc.sql:
# mysqldump -uroot -p*** abc<abc.sql
使用 source 導入 abc.sql:
# MariaDB [mysql]> use abc;# MariaDB [abc]> set names utf8; #設置編碼# MariaDB [abc]> source /home/abc/abc.sql;
3.附件(abc.sql)
SET NAMES utf8;SET FOREIGN_KEY_CHECKS =0;-- ------------------------------------ Table structure for `websites`-- ----------------------------------DROPTABLEIFEXISTS`websites`;CREATETABLE`websites`(`id`int(11)NOTNULLAUTO_INCREMENT,`name`char(20)NOTNULLDEFAULT''COMMENT'站點名稱',`url`varchar(255)NOTNULLDEFAULT'',`alexa`int(11)NOTNULLDEFAULT'0'COMMENT'Alexa 排名',`country`char(10)NOTNULLDEFAULT''COMMENT'國家',PRIMARYKEY(`id`))ENGINE=InnoDBAUTO_INCREMENT=6DEFAULTCHARSET=utf8;-- ------------------------------ Records of `websites`-- ----------------------------BEGIN;INSERTINTO`websites`VALUES('1','Google','https://www.google.cm/','1','USA'),('2','淘寶','https://www.taobao.com/','13','CN'),('3','百度','http://www.baidu.com/','8','CN'),('4','微博','http://weibo.com/','20','CN'),('5','Facebook','https://www.facebook.com/','3','USA');COMMIT;SET FOREIGN_KEY_CHECKS =1;