Bug #28664 CHECK TABLE returns confusing message.
Submitted: 25 May 2007 2:17 Modified: 16 Nov 2009 23:18
Reporter: David Snell Email Updates:
Status: Duplicate Impact on me:
None 
Category:MySQL Server: Errors Severity:S3 (Non-critical)
Version:5.1.18 OS:Windows
Assigned to: CPU Architecture:Any
Tags: CHECK TABLE, Table upgrade required

File: Maximum allowed size is 50MB.
Description:
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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: