How to recover deleted mysql data

Recovering deleted MySQL data requires administrator privileges. The steps are as follows: Determine the data to be restored. Check the binary logs and extract relevant queries. Import the extracted query. Recover data from before unexpected restart. Check the database backup and restore data from the backup.

MySQL Data Deletion Recovery

How to recover deleted MySQL data?

Recovering deleted MySQL data requires administrator privileges and the following steps:

1. Determine the data to be restored

Confirm the data you want to restore Recovered data tables, records and deletion time.

2. Check the binary log

If binary logging is enabled, check the most recent binary log file for queries required to recover the data.

3. Use binary log to recover data

Use the mysqlbinlog command to extract relevant queries in the binary log.

4. Import the recovered query

Use the following command to import the extracted query:

<code>mysql -u [用户名] -p[密码] [数据库名称] < [恢复的查询文件]</code>

5. Restore the data before restart

If the data was deleted before the unexpected restart, please use the following command to recover the data:

<code>mysql -u [用户名] -p[密码] [数据库名称]
SELECT * FROM [数据表名称] WHERE [条件]</code>

Where [condition] is the condition used to filter the recovered data.

6. Check database backup

If you perform database backup regularly, you can restore data from the backup.

Tips to prevent data loss

• Back up the database regularly.
• Enable binary logging to log all data changes.
• Use transactions to ensure data integrity.
• Regularly check the database logs for potential problems.
• Always test your queries in a test environment before making any changes.

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