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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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If a primary key is defined over column c of enum type then the EXPLAIN command for a look-up query of the form SELECT * FROM t WHERE c=0 said that the query was with an impossible where condition though the query correctly returned non-empty result set when the table indeed contained rows with error empty strings for column c. This kind of misbehavior was due to a bug in the function Field_enum::store(longlong,bool) that erroneously returned 1 if the the value to be stored was equal to 0. Note that the method Field_enum::store(const char *from,uint length,CHARSET_INFO *cs) correctly returned 0 if a value of the error empty string was stored. mysql-test/r/type_enum.result: Added a test case for bug #29661. mysql-test/t/type_enum.test: Added a test case for bug #29661. sql/field.cc: Fixed bug #29611. If a primary key was defined over column c of enum type then the EXPLAIN command for a look-up query of the form SELECT * FROM t WHERE c=0 said that the query was with an impossible where condition though the query correctly returned non-empty result set when the table indeed contained rows with error empty strings for column c. This kind of misbehavior was due to a bug in the function Field_enum::store(longlong,bool) that erroneously returned 1 if the the value to be stored was equal to 0. Note that the method Field_enum::store(const char *from,uint length,CHARSET_INFO *cs) correctly returned 0 if a value of the error empty string was stored. |
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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.