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MariaDB server is a community developed fork of MySQL server. Started by core members of the original MySQL team, MariaDB actively works with outside developers to deliver the most featureful, stable, and sanely licensed open SQL server in the industry.
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ORDER BY is used The range analysis module did not correctly signal to the handler that a range represents a ref (EQ_RANGE flag). This causes non-range queries like SELECT ... FROM ... WHERE keypart_1=const, ..., keypart_n=const ORDER BY ... FOR UPDATE to wait for a lock unneccesarily if another running transaction uses SELECT ... FOR UPDATE on the same table. Fixed by setting EQ_RANGE for all range accesses that represent an equality predicate. mysql-test/r/innodb_mysql.result: bug#28570: Test Result mysql-test/t/innodb_mysql.test: bug#28570: Test Case sql/handler.cc: bug#28570: Updated comment sql/opt_range.cc: bug#28570: Removed the criterion that key has to be unique (HA_NOSAME) in order for the EQ_RANGE flag to be set. It is sufficient that the range represent a ref access. |
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| README | ||
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 and the EXCEPTIONS-CLIENT file. - For commercial distributions, see the LICENSE.mysql 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 Installing and Upgrading chapter. - For the new features/bugfix history, see the Change History appendix. - For the currently known bugs/misfeatures (known errors) see the Problems and Common Errors 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.