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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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The parser is allocating Item_field for references by name in ORDER BY expressions. Such expressions however may point not only to Item_field in the select list (or to a table column) but also to an arbitrary Item. This causes Item_field::fix_fields to throw an error about missing column. The fix substitutes Item_field for the reference with an Item_ref when not pointing to Item_field. mysql-test/r/order_by.result: Bug #22457: Column alias in ORDER BY works, but not if in an expression - test case mysql-test/t/order_by.test: Bug #22457: Column alias in ORDER BY works, but not if in an expression - test case sql/item.cc: Bug #22457: Column alias in ORDER BY works, but not if in an expression - transform the Item_field made by the parser into Item_ref if it doesn't point to Item_field and it is in allowed context |
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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. - For commercial distributions, see the MySQLEULA.txt 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 Installation chapter. - For future plans, see the TODO appendix. - For the new features/bugfix history, see the News appendix. - For the currently known bugs/misfeatures (known errors) see the problems 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.