数据完全备份
mysqldump -uroot -pabc123 --databases school > /opt/school.sql
删除库
mysql> drop database school;
查看数据库
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| sys |
+--------------------+
还原数据库
mysql> source /opt/school.sql mysql> show databases; #查看数据库确认 +--------------------+ | Database | +--------------------+ | information_schema | | mysql | | performance_schema | | school | | sys | +--------------------+
方法二：此方法需要重新创建库名
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：不进入mysql数据库恢复数据
恢复数据
mysql -uroot -pabc123 < /opt/school.sql
数据表备份
mysqldump -uroot -pabc123 school info > /opt/info.sql
删除表格（模拟数据表损坏）
mysql> drop table info;
还原备份数据表
mysql> source /opt/info.sql
查看表格
mysql> show tables; +------------------+ | Tables_in_school | +------------------+ | info | +------------------+
与数据库一样，也可以不登录mysql恢复数据表 mysql -uroot -pabc123 school < /opt/info.sql
总结：
无论是恢复数据库还是恢复数据表，都应该先查看一下备份文件，看里面有无自动创建数据库或数据表的命令，再考虑是否在备份时创建数据库和数据表！
查看备份文件
vim school.sql
