Bug #37264 MySQL wrongly uses filesort
Submitted: 7 Jun 2008 22:35 Modified: 16 Oct 2008 3:58
Reporter: jocelyn fournier (Silver Quality Contributor) Email Updates:
Status: Verified Impact on me:
None 
Category:MySQL Server: Optimizer Severity:S5 (Performance)
Version:5.1.24-rc 5.1.29-rc 5.1.30 OS:Any
Assigned to: CPU Architecture:Any
Tags: qc, regression

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: