One, database preparation
1. Create a database
mysql> create database if not exists school character set utf8;
Query OK, 1 row affected, 1 warning (0.00 sec)2. Create a table
#创建student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
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)
);3. Insert data records in the table
#向student表插入记录
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
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);
4. View table structure and data records
mysql> desc student;
+------------+-------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+------------+-------------+------+-----+---------+-------+
| id | int(10) | NO | PRI | NULL | |
| name | varchar(20) | NO | | NULL | |
| sex | varchar(4) | YES | | NULL | |
| birth | year(4) | YES | | NULL | |
| department | varchar(20) | YES | | NULL | |
| address | varchar(50) | YES | | NULL | |
+------------+-------------+------+-----+---------+-------+
6 rows in set (0.00 sec)
mysql> desc score;
+--------+-------------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+--------+-------------+------+-----+---------+----------------+
| id | int(10) | NO | PRI | NULL | auto_increment |
| stu_id | int(10) | NO | | NULL | |
| c_name | varchar(20) | YES | | NULL | |
| grade | int(10) | YES | | NULL | |
+--------+-------------+------+-----+---------+----------------+
4 rows in set (0.00 sec)
mysql> select * from student;
+-----+-----------+------+-------+--------------+--------------------+
| id | name | sex | birth | department | address |
+-----+-----------+------+-------+--------------+--------------------+
| 901 | 张老大 | 男 | 1985 | 计算机系 | 北京市海淀区 |
| 902 | 张老二 | 男 | 1986 | 中文系 | 北京市昌平区 |
| 903 | 张三 | 女 | 1990 | 中文系 | 湖南省永州市 |
| 904 | 李四 | 男 | 1990 | 英语系 | 辽宁省阜新市 |
| 905 | 王五 | 女 | 1991 | 英语系 | 福建省厦门市 |
| 906 | 王六 | 男 | 1988 | 计算机系 | 湖南省衡阳市 |
+-----+-----------+------+-------+--------------+--------------------+
6 rows in set (0.00 sec)
mysql> select * from score;
+----+--------+-----------+-------+
| id | stu_id | c_name | grade |
+----+--------+-----------+-------+
| 1 | 901 | 计算机 | 98 |
| 2 | 901 | 英语 | 80 |
| 3 | 902 | 计算机 | 65 |
| 4 | 902 | 中文 | 88 |
| 5 | 903 | 中文 | 95 |
| 6 | 904 | 计算机 | 70 |
| 7 | 904 | 英语 | 92 |
| 8 | 905 | 英语 | 94 |
| 9 | 906 | 计算机 | 90 |
| 10 | 906 | 英语 | 85 |
+----+--------+-----------+-------+
10 rows in set (0.00 sec)Two, backup and restore
1. Back up the database school to the /backup directory
[root@bogon ~]# mysqldump -uroot -p -B school > /backup/school_1.sql
Enter password: 2. The backup MySQL database is in the format with deleted tables, which can make the backup overwrite the existing database without manually deleting the original database
[root@bogon ~]# mysqldump --add-drop-table -uroot -p -B school > /backup/school_2.sql
Enter password: 3. Compress and backup the MySQL database directly
[root@bogon ~]# mysqldump -uroot -p -B school | gzip > /backup/school_3.sql.gz
Enter password: 4. Back up a certain table(s) of the MySQL database. This example backs up the student table
[root@bogon ~]# mysqldump -uroot -p school student >/backup/school.student.sql
Enter password:5. Back up multiple MySQL databases at the same time (other database materials are prepared by yourself)
[root@bogon ~]# mysqldump -uroot -p -B school stu > /backup/school_stu.sql
Enter password: 6. Only backup the database structure
[root@bogon backup]# mysqldump -uroot -p -d school > /backup/school_no_data.sql
Enter password: 7. Back up all databases on the server
[root@bogon ~]# mysqldump -uroot -p -A > /backup/all_database.sql
Enter password: 8. Restore the MySQL database
① Delete the database
② Restore the database
③ View the restored database
9. Restore the compressed MySQL database
① Delete the database
② Restore the database
③ View the restored database
1 to 0, using the database backup mydumper
① Install mydumper
[root@bogon ~]# yum -y install glib2-devel mysql-devel zlib-devel pcre-devel //安装依赖包
[root@bogon ~]# yum install -y gcc gcc-c++ cmake make //安装依赖包
[root@bogon ~]# rz //将提前下载好的mydumper安装包上传
[root@bogon ~]# tar xvf mydumper-0.9.1.tar.gz //解压
[root@bogon ~]# cd mydumper-0.9.1/ //切换目录
[root@bogon mydumper-0.9.1]# cmake . //编译
[root@bogon mydumper-0.9.1]# make //编译
[root@bogon mydumper-0.9.1]# make install //安装② Backup database
[root@bogon ~]# mydumper -u root -p 123abcABC! -B school -o /backup/school/1 1. Use mydumper to restore the database
[root@bogon school]# myloader -u root -p 123abcABC! -B school -o -d /backup/school/