Bug #18826 Using subquery in "in (...)" clause forces full table scan
Submitted: 6 Apr 2006 0:19 Modified: 23 Jan 2014 9:46
Reporter: time e.less Email Updates:
Status: Closed Impact on me:
None 
Category:MySQL Server: Optimizer Severity:S5 (Performance)
Version:5.0.16 OS:Linux (Debian Linux AMD 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: