MySQL Bugs: #41109: Query takes >5 hrs and locks db, when optimised manually takes <1s

Bug #41109	Query takes >5 hrs and locks db, when optimised manually takes <1s
Submitted:	28 Nov 2008 17:13	Modified:	1 Apr 2009 6:51
Reporter:	Anthony Wright	Email Updates:
Status:	Verified	Impact on me:	None
Category:	MySQL Server: Optimizer	Severity:	S2 (Serious)
Version:	5.1.30, 5.0, 5.1, 6.0 bzr	OS:	Any
Assigned to:		CPU Architecture:	Any
Tags:	regression

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

archive containing dump and copies of faultly and manually optimised queries

Attachment: mysql-bug.tar.bz2 (application/x-bzip2, text), 12.89 KiB.

test case for the testsuite

Attachment: bug41109.test (application/octet-stream, text), 54.83 KiB.