MySQL数据库增量备份使用mysqldump

On first run this script will detect auto-incremental columns from the database tables, store it"s max(value) into a special file called point file, and on the next runs will run mysqldump with --where param auto-incremental column > last max(value). As output is small, it"s a perfect candidate to send the incremental backups to some email every some hours. It"s not a replacement for full backups or for binary logs. It cannot detect deleted or updated rows.