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26

answers:

1
+2  Q: 

does mysql undo changes if you kill thread?

i ran a delete rows query. it was taking too long so i killed the thread from administration. did it undo the changes to the table/?

+1  A: 

InnoDB will rollback the transaction.

MyISAM will leave the changes and possible even the table in corrupt state.

Quassnoi  2010-05-21 18:54:02

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