Bug #94798 Since MySQL 8.0.15 execution plan has changed in a bad way
Submitted: 27 Mar 2019 12:55 Modified: 6 May 2019 13:08
Reporter: DD DDD Email Updates:
Status: Can't repeat Impact on me:
None 
Category:MySQL Server: Optimizer Severity:S5 (Performance)
Version:8.0.12 OS:Linux
Assigned to: CPU Architecture:Any
Tags: performance executionplan

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:

[27 Mar 2019 12:56] DD DDD
explain queries

Attachment: explains.txt (text/plain), 30.90 KiB.

[27 Mar 2019 12:56] DD DDD
explains for mysql 8.0.11 / 8.0.12 / 8.0.15

Attachment: explains.txt (text/plain), 30.90 KiB.