Bug #93265 ADD COLUMN marked as table-rebuilding operation in MySQL 8.0 manual
Submitted: 21 Nov 2018 8:47 Modified: 25 Nov 2018 7:03
Reporter: Alexey Kopytov Email Updates:
Status: Closed Impact on me:
None 
Category:MySQL Server: Documentation Severity:S3 (Non-critical)
Version:8.0 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: