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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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When rand() is called multiple times inside a stored procedure, the server does not binlog the correct random seed values. This patch corrects the problem by resetting rand_used= 0 in THD::cleanup_after_query() allowing the system to save the random seeds if needed for each command in a stored procedure body. However, rand_used is not reset if executing in a stored function or trigger because these operations are binlogged by call and thus only the calling statement need detect the call to rand() made by its substatements. These substatements must not set rand_used to 0 because it would remove the detection of rand() by the calling statement. mysql-test/r/rpl_misc_functions.result: Bug #25543 Replication of wrong values if using rand() in stored procedure The result file was modified to include the correct processing of the new additions to the test. The results from execution are written to files on both the master and the slave. The files are compared to ensure the values from rand() generated on the master are correctly generated on the slave. mysql-test/t/rpl_misc_functions.test: Bug #25543 Replication of wrong values if using rand() in stored procedure The test was modified to include a test of a stored procedure that calls the rand() function multiple times. The results from execution are written to files on both the master and the slave. The files are compared to ensure the values from rand() generated on the master are correctly generated on the slave. sql/sql_class.cc: Bug #25543 Replication of wrong values if using rand() in stored procedure The code was modified to reset rand_used so that detection of calls to rand() will save random seeds if needed by the slave. |
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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.