Bug #68145 GROUP_CONCAT with DISTINCT could return wrong result when rb-trees are on disk
Submitted: 22 Jan 2013 17:15 Modified: 22 Jan 2013 18:43
Reporter: Chehai WU Email Updates:
Status: Verified Impact on me:
Category:MySQL Server: DML Severity:S2 (Serious)
Version:5.5.29, 5.0.97, 5.1.69, 5.5.31, 5.7.1 OS:Any
Assigned to: CPU Architecture:Any
Tags: group_concat

File: Maximum allowed size is 3MB.

If the data you need to attach is more than 3MB, you should create a compressed archive of the data and a README file that describes the data with a filename that includes the bug number (recommended filename: mysql-bug-data-68145.zip) and upload one to sftp.oracle.com. A free Oracle Web (SSO) account (the one you use to login bugs.mysql.com) and a client that supports SFTP are required in order to access the SFTP server.

To upload the file to sftp.oracle.com:

  1. Open an SFTP client and connect to sftp.oracle.com. Specify port 2021 and remote directory /support/incoming/.
  2. Log in with your newly created Oracle Web account (email address) and password.
  3. Upload the archive to /support/incoming.
  4. Once you have uploaded the file, add a comment to this bug to notify us about it.
Example: sftp -oPort=2021 -oUser=email sftp.oracle.com:/support/incoming

Usage Notes: This directory is unlistable, which means that once you have uploaded your file, you will not be able to see it. A file cannot be uploaded more than once with the same filename. The filename must be changed before attempting to upload the file again. The filename should always start with mysql-bug- prefix. Files are retained on the SFTP server for 7 days and then permanently removed.

[22 Jan 2013 17:16] Chehai WU
MySQL dump file to redproduce the issue

Attachment: bug.sql (application/octet-stream, text), 10.63 KiB.

[22 Jan 2013 18:17] Valeriy Kravchuk
With 512K

Attachment: bug68145.txt (text/plain), 20.62 KiB.

[22 Jan 2013 18:17] Valeriy Kravchuk
With 16M

Attachment: bug68145_2.txt (text/plain), 5.87 KiB.