Hi!

A rather serious bug was introduced to 4.0.10 in connection of another bug
fix.

If you have a composite key (col1, col2) in an InnoDB table, then a query of
type

SELECT ...
FROM ...
WHERE col1 = x ORDER BY col2 DESC;

may hang in an infinite loop.

The fix is in 4.0.11.

Best regards,

Heikki Tuuri
Innobase Oy
---
InnoDB - transactions, hot backup, and foreign key support for MySQL
See http://www.innodb.com, download MySQL-Max from http://www.mysql.com

sql query




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