Bug #34720 Looks like the CONCAT function is truncating the output
Submitted: 21 Feb 2008 11:29 Modified: 21 Feb 2008 17:27
Reporter: Santhinesh Nagendran Email Updates:
Status: Verified Impact on me:
None 
Category:MySQL Server: General Severity:S3 (Non-critical)
Version:5.1.22-RC, 5.0, 5.1, 6.0 BK OS:Linux (Linux database-112-2-1.db.overlay.intra 2.6.18-53.1.6.el5 #1 SMP Wed Jan 23 11:28:47 EST 2008 x86_64)
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: