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Following question came up recently: What happens if you drop or add a partition of an existing already partitioned table with ALTER TABLE? Will it be copied or will just the single partition be dropped and added? How are the index(es) rebuild after such a drop/add?

In the MySQL documentation were not to many details mentioned:

The following maintenance jobs are typically run against a MySQL database:

• Backup
• Clean-up binary logs
• Optimize tables
• Purge query cache
• Rotate binary logs

Backup

A backup is not a typical maintenance job. But it behaves more or less like one. The backup should be done regularly depending on the restore/PITR (Point in Time Recovery) requirements.