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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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ba4682ae10
Sometimes the number of really updated rows (with changed column values) cannot be determined at the server level alone (e.g. if the storage engine does not return enough column values to verify that). So the only dependable way in such cases is to let the storage engine return that information if possible. Fixed the bug at server level by providing a way for the storage engine to return information about wether it actually updated the row or the old and the new column values are the same. It can do that by returning HA_ERR_RECORD_IS_THE_SAME in ha_update_row(). Note that each storage engine may choose not to try to return this status code, so this behaviour remains storage engine specific. include/my_base.h: Bug #29157: handle the row not updated special return value sql/log_event.cc: Bug #29157: handle the row not updated special return value sql/sp.cc: Bug #29157: handle the row not updated special return value sql/sql_acl.cc: Bug #29157: handle the row not updated special return value sql/sql_insert.cc: Bug #29157: handle the row not updated special return value sql/sql_servers.cc: Bug #29157: handle the row not updated special return value sql/sql_update.cc: Bug #29157: handle the row not updated special return value |
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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.