Bug #74661 EXPLAIN FORMAT=JSON says two temptables are used, execution shows just one
Submitted: 2 Nov 2014 20:20 Modified: 16 Jun 2016 20:44
Reporter: Sergey Petrunya Email Updates:
Status: Verified Impact on me:
None 
Category:MySQL Server: Optimizer Severity:S3 (Non-critical)
Version:5.6.21, 5.6.22, 5.7.6 OS:Any
Assigned to: CPU Architecture:Any
Tags: format=json

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:

[3 Nov 2014 5:21] Umesh Shastry
test results

Attachment: 74661.txt (text/plain), 13.32 KiB.