Bug #37753 InnoDB key size limitation is not documented on the InnoDB limitations page
Submitted: 1 Jul 2008 1:20 Modified: 11 Jul 2008 20:14
Reporter: Mikiya Okuno Email Updates:
Status: Closed Impact on me:
None 
Category:MySQL Server: Documentation Severity:S3 (Non-critical)
Version:any OS:Any
Assigned to: Paul DuBois 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: