Bug #84492 X lock on PRIMARY key for all records if a subquery is used in UPDATE statement
Submitted: 12 Jan 2017 16:39 Modified: 13 Jan 2017 9:03
Reporter: Oleksandr Rybka Email Updates:
Status: Duplicate Impact on me:
None 
Category:MySQL Server: Optimizer Severity:S3 (Non-critical)
Version:5.7.14, 5.7.17 OS:Oracle Linux (7.2)
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: