目录
4.备份MySQL数据库为带删除表的格式,能够让该备份覆盖已有数据库而不需要手动删除原有数据库
6.备份MySQL数据库某个(些)表。此例备份student表
数据库备份,数据库为school,素材如下
1.创建student和score表
CREATE TABLE student (id INT(10) NOT NULL UNIQUE PRIMARY KEY ,name VARCHAR(20) NOT NULL ,sex VARCHAR(4) ,birth YEAR,department VARCHAR(20) ,address VARCHAR(50));
创建score表,SQL代码如下:
CREATE TABLE score (id INT(10) NOT NULL UNIQUE PRIMARY KEY AUTO_INCREMENT ,stu_id INT(10) NOT NULL ,c_name VARCHAR(20) ,grade INT(10));
2.为student表和score表增加记录
向
student
表插入记录的
INSERT
语句如下:
INSERT INTO student VALUES( 901,'张老大', '男',1985,'计算机系', '北京市海淀区');INSERT INTO student VALUES( 902,'张老二', '男',1986,'中文系', '北京市昌平区');INSERT INTO student VALUES( 903,'张三', '女',1990,'中文系', '湖南省永州市');INSERT INTO student VALUES( 904,'李四', '男',1990,'英语系', '辽宁省阜新市');INSERT INTO student VALUES( 905,'王五', '女',1991,'英语系', '福建省厦门市');INSERT INTO student VALUES( 906,'王六', '男',1988,'计算机系', '湖南省衡阳市');
向score表插入记录的INSERT语句如下:
INSERT INTO score VALUES(NULL,901, '计算机',98);INSERT INTO score VALUES(NULL,901, '英语', 80);INSERT INTO score VALUES(NULL,902, '计算机',65);INSERT INTO score VALUES(NULL,902, '中文',88);INSERT INTO score VALUES(NULL,903, '中文',95);INSERT INTO score VALUES(NULL,904, '计算机',70);INSERT INTO score VALUES(NULL,904, '英语',92);INSERT INTO score VALUES(NULL,905, '英语',94);INSERT INTO score VALUES(NULL,906, '计算机',90);INSERT INTO score VALUES(NULL,906, '英语',85);
3.备份数据库school到/backup目录
[root@node1 ~]# mysqldump -uroot -p123456 -B school --set-gtid-purged=OFF > /backup/db_school.sql
4.备份MySQL数据库为带删除表的格式,能够让该备份覆盖已有数据库而不需要手动删除原有数据库
[root@node1 ~]# mysqldump -uroot -p123456 --set-gtid-purged=OFF --add-drop-database school > /backup/db_school1.sql
5.直接将MySQL数据库压缩备份
[root@node1 ~]# mysqldump -uroot -p123456 -B school --set-gtid-purged=OFF | gzip > /backup/db_school3.sql.gz
6.备份MySQL数据库某个(些)表。此例备份student表
[root@node1 ~]# mysqldump -uroot --set-gtid-purged=OFF -p123456 school student > /backup/db_school4.sql
7.同时备份多个MySQL数据库(其他数据库素材自行准备)
[root@node1 ~]# mysqldump -uroot --set-gtid-purged=OFF -p123456 -B school it > /backup/db_school5.sql
8.仅仅备份数据库结构
[root@node1 ~]# mysqldump -uroot --set-gtid-purged=OFF -p123456 -d school > /backup/db_school6.sql
9.备份服务器上所有数据库
[root@node1 ~]# mysqldump -uroot --set-gtid-purged=OFF -p123456 -A > /backup/db_school7.sql
10.还原MySQL数据库
(1)删除数据库
mysql [(none)]>drop database school;
mysql [(none)]>show databases;
(2)还原数据库
[root@node1 ~]# mysql -uroot -p123456 < /backup/db_school.sql
(3) 查看结果
mysql [school]>show tables;
11.还原压缩的MySQL数据库
(1)删除数据库
mysql [school]>drop database school;
mysql [(none)]>show databases;
(2)还原压缩的数据库
[root@node1 backup]# zcat /backup/db_school3.sql.gz | mysql -uroot -p123456
(3)查看还原后的数据库的信息
mysql [school]>show tables;
12.使用mydumper备份数据库
[root@node1 backup]# mydumper -u root -p 123456 -B school -S /tmp/mysql.sock -o /backup/db_school9.sql
13.使用mydumper恢复数据库
(1)删除数据库
mysql [school]>drop database school;
(2)还原数据库
[root@node1 backup]# myloader -u root -p 123456 -S /tmp/mysql.sock -d /backup/db_school9.sql -B school
(3)查看还原后的结果
mysql [school]>show tables;