Bug #96378 Subquery with parameter is exponentially slower than hard-coded value
Submitted: 31 Jul 2019 3:00 Modified: 2 Jan 2020 9:47
Reporter: Jeff Johnson Email Updates:
Status: No Feedback Impact on me:
None 
Category:MySQL Server: Optimizer Severity:S4 (Feature request)
Version:8.0.17 OS:Windows (Windows 10 x64)
Assigned to: CPU Architecture:x86 (AMD Threadripper 1950X)
Tags: performance

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: