mysql數據庫命令大全---完全備份和恢復

數據完全備份

mysqldump -uroot -pabc123 --databases school > /opt/school.sql

刪除庫

mysql> drop database school;

查看數據庫

mysql> show databases;

+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
| sys                |
+--------------------+

還原數據庫

mysql> source /opt/school.sql
mysql> show databases; #查看數據庫確認
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| school |
| sys |
+--------------------+

方法二：此方法需要重新創建庫名

mysqldump -uroot -pabc123 school > /opt/school.sql
mysql> create database school;
mysql> source /opt/school.sql;
mysql> show tables;
+------------------+
| Tables_in_school |
+------------------+
| info |
+------------------+
1 row in set (0.00 sec)

mysql> select * from info;
+----+------+-------+
| id | name | score |
+----+------+-------+
| 1 | ll | 88 |
| 2 | tl | 68 |
| 3 | ww | 44 |
| 4 | pw | 55 |
+----+------+-------+

方法三：不進入mysql數據庫恢復數據

恢復數據

mysql -uroot -pabc123 < /opt/school.sql

數據表備份

mysqldump -uroot -pabc123 school info \> /opt/info.sql

刪除表格（模擬數據表損壞）

mysql> drop table info;

還原備份數據表

mysql\> source /opt/info.sql

查看表格

mysql> show tables;
+------------------+
| Tables_in_school |
+------------------+
| info |
+------------------+

與數據庫一樣，也可以不登錄mysql恢復數據表
mysql -uroot -pabc123 school < /opt/info.sql

總結：

無論是恢復數據庫還是恢復數據表，都應該先查看一下備份文件，看里面有無自動創建數據庫或數據表的命令，再考慮是否在備份時創建數據庫和數據表！

查看備份文件

vim school.sql