MySQL Bugs: #104659: Select * reporting less rows_examined than only fields in an index.

Bug #104659	Select * reporting less rows_examined than only fields in an index.
Submitted:	18 Aug 2021 22:19	Modified:	26 Jun 2023 20:04
Reporter:	Jean-François Gagné	Email Updates:
Status:	Verified	Impact on me:	None
Category:	MySQL Server: InnoDB storage engine	Severity:	S2 (Serious)
Version:	8.0.26, 5.7.35	OS:	Any
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:

On *nix platforms use the split command e.g. split -b 50MB <my_large_archive> <my_split_archive_prefix>
On windows use WinZip or a similar utility to split the large file

Reproduction for 5.7.35.

Attachment: 5.7.35.txt (text/plain), 10.32 KiB.

Screenshot of the discussion with Øystein (for when it will not be accessible because of free Slack limited history).

Attachment: Screen Shot 2021-09-28 at 2.40.01 PM.png (image/png, text), 414.07 KiB.