Bug #28554 Optimizer wrongly prefers index for (col = value) over (PK <= value)
Submitted: 21 May 2007 9:32 Modified: 22 May 2009 13:56
Reporter: Valeriy Kravchuk Email Updates:
Status: Verified Impact on me:
Category:MySQL Server: Optimizer Severity:S3 (Non-critical)
Version:4.1.22, 5.0.42-BK OS:Any
Assigned to: CPU Architecture:Any
Tags: bfsm_2007_05_31, bfsm_2007_06_21, bfsm_2007_06_28
Triage: Triaged: D3 (Medium) / R4 (High) / E3 (Medium)

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-28554.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.

[21 May 2007 9:35] Valeriy Kravchuk
Dump of a table used for testing

Attachment: bug28554.sql.gz (application/gzip, text), 16.92 KiB.