How to recover just deleted rows in mysql

Question

Is it possible to restore table to last time with data if all data was deleted accidentally

User · Answer

For InnoDB tables  Percona has a recovery tool which may help  It is far from fail-safe or perfect  and how fast you stopped your MySQL server after the accidental deletes has a major impact  If you re quick enough  changes are you can recover quite a bit of data  but recovering all data is nigh impossible    Of cours  proper daily backups  binlogs  and possibly a replication slave  which won t help for accidental deletes but does help in case of hardware failure  are the way to go  but this tool could enable you to save as much data as possible when you did not have those yet

User · Answer

No this is not possible  The only solution will be to have regular backups  This is very important

User · Answer

There is another solution  if you have binary logs active on your server you can use mysqlbinlog  generate a sql file with it  mysqlbinlog binary log file  gt  query log sql   then search for your missing rows  If you don t have it active  no other solution  Make backups next time

User · Answer

As Mitch  mentioned  backing data up is the best method   However  it maybe possible to extract the lost data partially depending on the situation or DB server used  For most part  you are out of luck if you don t have any backup

User · Answer

Sort of  Using phpMyAdmin I just deleted one row too many  But I caught it before I proceeded and had most of the data from the delete confirmation message  I was able to rebuild the record  But the confirmation message truncated some of a text comment   Someone more knowledgeable than I regarding phpMyAdmin may know of a setting so that you can get a more complete echo of the delete confirmation message  With a complete delete message available  if you slow down and catch your error  you can restore the whole record    PS This app also sends an email of the submission that creates the record  If the client has a copy  I will be able to  restore the record completely

User · Answer

Unfortunately  no  If you were running the server in default config  go get your backups  you have backups  right   - generally  a database doesn t keep previous versions of your data  or a revision of changes  only the current state    Alternately  if you have deleted the data through a custom frontend  it is quite possible that the frontend doesn t actually issue a DELETE  many tables have a is deleted field or similar  and this is simply toggled by the frontend  Note that this is a  soft delete  implemented in the frontend app - the data is not actually deleted in such cases  if you actually issued a DELETE  TRUNCATE or a similar SQL command  this is not applicable

User · Answer

I m sorry  bu it s not posible  unless you made a backup file earlier   EDIT  Actually it is possible  but it gets very tricky and you shouldn t think about it if data wasn t really  really important  You see  when data get s deleted from a computer it still remains in the same place on the disk  only its sectors are marked as empty  So data remains intact  except if it gets overwritten by new data  There are several programs designed for this purpose and there are companies who specialize in data recovery  though they are rather expensive

User · Answer

If you use MyISAM tables  then you can recover any data you deleted  just   open file  mysql data  your db   your table  MYD  with any text editor

[mysql] How to recover just deleted rows in mysql?

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