Bug #53820 ALTER a MEDIUMINT column table causes full table copy
Submitted: 19 May 2010 18:15 Modified: 4 Aug 2010 22:47
Reporter: Mattias Jonsson Email Updates:
Status: Closed Impact on me:
None 
Category:MySQL Server: DDL Severity:S2 (Serious)
Version:5.5+ OS:Any
Assigned to: Dmitry Lenev CPU Architecture:Any

File: Maximum allowed size is 50MB.
Description:
Privacy:

If the data you need to attach is more than 50MB, you should create a compressed archive of the data, split it to 50MB chunks, and upload each of them as a separate attachment.

To split a large file: