mirror of
https://github.com/MariaDB/server.git
synced 2025-05-28 13:01:41 +03:00
86ae2f3b06
The problem was in that opt_sum_query() replaced MIN/MAX functions with the corresponding constant found in a key, but due to imprecise representation of float numbers, when evaluating the where clause, this comparison failed. When MIN/MAX optimization detects that all tables can be removed, also remove all conjuncts in a where clause that refer to these tables. As a result of this fix, these conditions are not evaluated twice, and in the case of float number comparisons we do not discard result rows due to imprecise float representation. As a side-effect this fix also corrects an unnoticed problem in bug 12882.
This is a release of MySQL, a dual-license SQL database server. MySQL is brought to you by the MySQL team at MySQL AB. License information can be found in these files: - For GPL (free) distributions, see the COPYING file. - For commercial distributions, see the MySQLEULA.txt file. For further information about MySQL or additional documentation, see: - The latest information about MySQL: http://www.mysql.com - The current MySQL documentation: http://dev.mysql.com/doc Some manual sections of special interest: - If you are migrating from an older version of MySQL, please read the "Upgrading from..." section first! - To see what MySQL can do, take a look at the features section. - For installation instructions, see the Installation chapter. - For future plans, see the TODO appendix. - For the new features/bugfix history, see the News appendix. - For the currently known bugs/misfeatures (known errors) see the problems appendix. - For a list of developers and other contributors, see the Credits appendix. A local copy of the MySQL Reference Manual can be found in the Docs directory in GNU Info format. You can also browse the manual online or download it in any of several formats at the URL given earlier in this file. ************************************************************ IMPORTANT: Bug or error reports should be sent to http://bugs.mysql.com.