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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 transforming "oe IN (SELECT ie ...)" wrap the pushed-down predicates iff "oe can be null", not "ie can be null". The fix doesn't cover row-based subqueries, those will be fixed in #24127. mysql-test/r/subselect.result: BUG#24085: Wrong result for NULL IN (SELECT not_null_val FROM ...) Update the test results (checked) mysql-test/r/subselect3.result: BUG#24085: Wrong result for NULL IN (SELECT not_null_val FROM ...) - Testcase mysql-test/t/subselect3.test: BUG#24085: Wrong result for NULL IN (SELECT not_null_val FROM ...) - Testcase sql/item_subselect.cc: BUG#24085: Wrong result for NULL IN (SELECT not_null_val FROM ...) When transforming "oe IN (SELECT ie ...)" we should make special provisions (wrap the pushed predicates) if we can encounter NULL IN (SELECT ...), i.e. when oe->maybe_null. The code was checking for ie->maybe_null instead, fixed it for single value based subqueries. Row-based subqueries (e.g. (a,b) IN (SELECT c,d ...)) are not fixed because they won't produce correct results for several other reasons (filed as #24085) |
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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.