In fact, hot backup and restore, there are client operation tools, but here is the command line (under window, linux is not tested):
1. Backup and restore tables: (test is the database name)
备份：C:\Users>mysqldump test cloth -uroot -p123 > D:test.sql
Recovery: C:\Users>mysql test -uroot -p123 < D:test.sql
So if you have a table data error and need to be restored online, you can first create a new table to import the backup data, and then hot update to the original table.
2. Backup the database:
Backup: C:\Users>mysqldump test -uroot -p123 > D:test.sql
Recovery (same): C:\Users>mysql test -uroot -p123 < D:test.sql
The specific parameters can be viewed through C:\Users>mysqldump --help, which has a detailed introduction. The most used ones are -h (host address such as ip), -a (backup all databases)
Data migration: (data comma separated)
1、导入：load data infile '/t.txt' into table t FIELDS TERMINATED BY ',';
2、导出：select * from t into outfile '/t_0.txt';
data backup:
1. Hot standby ( described above )
2. For cold backup, copy the data directory.
reduction:
1. According to hot backup, hot restore
2. Restore from cold backup
3. Restore to the specified time point according to the binlog.