MySQL Bugs: #77504: Optimizer choosing bad access path with uneven distribution of keys

Bug #77504	Optimizer choosing bad access path with uneven distribution of keys
Submitted:	26 Jun 2015 12:55	Modified:	9 Jul 2015 12:07
Reporter:	Aaron Craven	Email Updates:
Status:	Verified	Impact on me:	None
Category:	MySQL Server: Optimizer	Severity:	S4 (Feature request)
Version:	5.6	OS:	Any
Assigned to:		CPU Architecture:	Any

View
Add Comment
Files
Developer
Edit Submission
View Progress Log
Contributions

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

table, index, explain, and profile results

Attachment: explain_and_profile.txt (text/plain), 214.49 KiB.

optimizer trace

Attachment: optimizer_trace.txt (text/plain), 25.53 KiB.