Hy Rus, Tried some more stuff, now it is working. Thanks!
The Query: mysql> SELECT DISTINCT Transactions.ObjectId,Attachments.Subject FROM Attachments LEFT OUTER JOIN Transactions ON Transactions.Id = Attachments.TransactionId WHERE Transactions.ObjectType = 'RT::Ticket' AND LENGTH(Attachments.Content) > 4000000; Written it down for other people who might have the same problem: https://raymii.org/s/tutorials/RT_find__and_delete_big_attachments.html Sincerely,
