Bug #88764 "ALTER TABLE MODIFY..." takes time even if leving table as is
Submitted: 5 Dec 2017 17:14 Modified: 18 Feb 2018 18:05
Reporter: teo teo Email Updates:
Status: No Feedback Impact on me:
None 
Category:MySQL Server: DDL Severity:S3 (Non-critical)
Version:5.6.20 OS:Any
Assigned to: 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: