6ba83565f0
This patch implements an Oracle style function to_number() with the following signatures: - to_number(number_or_string_subject) - to_number(string_subject, string_format) The function is implemented in sql/item_numconvfunc.cc. The function returns the DOUBLE data type for all signatures and input data types. The format parser understands the following components: - Digits: 0, 9 - Hex digits: X - Group separators: comma (,) and G - Decimal delimiers: period (.) and D - Approximate number signature: EEEE - Currency/numeric flags: $ and B - Currency signatures: C, L, U - Sign signatures: S, MI, PR - Special format signatures: V, TM, TM9, TME - Format flag: FM Note, the parser was implemented assuming that we'll also have the oppostite function to_char() soon for numeric input. So it parser all known components. However, the function to_number() does not support: - Formats V, TM, TM9, TME. to_number() returns NULL if the format string has these components. These componens are supported only by to_char() in Oracle. Features not inclided into this patch: - The ON CONVERSION ERROR clause - The third parameter (nlsparam) - Internationalized components: G, D, C, L, U. These features will be implemented later, under terms of MDEV-36978. Notable changes in the other files: - item_func.h: adding Item_handled_func::Handler_double - simple_parser.h: adding a number of *CONTAINER* templates They help to save on duplicate code when creating classes suitable for passing into parsing templates such as OPT, OR2C, OR3C, etc - simple_parser.h: Adding parsing templates OR4C and OR5C - simple_parser.h: Moving the template "OPT" towars the beginning of the file Rule parsing templates TOKEN, TokenChoice, AND2, OR2C, OR3C, OR4C, OR5C, LIST now provide a sub-class Opt, to parse its optional rule. - simple_parser.h: Adding "explicit" to all "operator bool" definitions - Renaming Parser_templates::TOKEN to Parser_templates::TokenParser - Adding "explicit" to all "operator bool()" templates/classes, to avoid hidden implicit conversion (to int, void*, etc). - Renaming the LIST template parameter ELEMENT to ELEMENT_PARSER, to make it clearer what it is for. - Renaming the OPT template parameter RULE to RULE_PARSER, to make it clearer what it is for. |
||
|---|---|---|
| .github | ||
| BUILD | ||
| client | ||
| cmake | ||
| dbug | ||
| debian | ||
| Docs | ||
| extra | ||
| include | ||
| libmariadb@ba712ddf96 | ||
| libmysqld | ||
| libservices | ||
| man | ||
| mysql-test | ||
| mysys | ||
| mysys_ssl | ||
| plugin | ||
| randgen/conf | ||
| scripts | ||
| sql | ||
| sql-bench | ||
| sql-common | ||
| storage | ||
| strings | ||
| support-files | ||
| tests | ||
| tpool | ||
| unittest | ||
| vio | ||
| win | ||
| wsrep-lib@70cd967f5e | ||
| zlib | ||
| .clang-format | ||
| .gitattributes | ||
| .gitignore | ||
| .gitlab-ci.yml | ||
| .gitmodules | ||
| appveyor.yml | ||
| BUILD-CMAKE | ||
| CMakeLists.txt | ||
| CODING_STANDARDS.md | ||
| config.h.cmake | ||
| configure.cmake | ||
| CONTRIBUTING.md | ||
| COPYING | ||
| CREDITS | ||
| INSTALL-SOURCE | ||
| INSTALL-WIN-SOURCE | ||
| KNOWN_BUGS.txt | ||
| README.md | ||
| SECURITY.md | ||
| THIRDPARTY | ||
| VERSION | ||
Code status:
ci.appveyor.com
MariaDB: The innovative open source database
MariaDB was designed as a drop-in replacement of MySQL(R) with more features, new storage engines, fewer bugs, and better performance.
MariaDB is brought to you by the MariaDB Foundation and the MariaDB Corporation. Please read the CREDITS file for details about the MariaDB Foundation, and who is developing MariaDB.
MariaDB is developed by many of the original developers of MySQL who now work for the MariaDB Corporation, the MariaDB Foundation and by many people in the community.
MySQL, which is the base of MariaDB, is a product and trademark of Oracle Corporation, Inc. For a list of developers and other contributors, see the Credits appendix. You can also run 'SHOW authors' to get a list of active contributors.
A description of the MariaDB project and a manual can be found at:
https://mariadb.com/kb/en/mariadb-vs-mysql-features/
https://mariadb.com/kb/en/mariadb-versus-mysql-compatibility/
https://mariadb.com/kb/en/new-and-old-releases/
Getting the code, building it and testing it
Refer to the following guide: https://mariadb.org/get-involved/getting-started-for-developers/get-code-build-test/ which outlines how to build the source code correctly and run the MariaDB testing framework, as well as which branch to target for your contributions.
Help
More help is available from the Maria Discuss mailing list https://lists.mariadb.org/postorius/lists/discuss.lists.mariadb.org/ and MariaDB's Zulip instance, https://mariadb.zulipchat.com/
Licensing
MariaDB is specifically available only under version 2 of the GNU General Public License (GPLv2). (I.e. Without the "any later version" clause.) This is inherited from MySQL. Please see the README file in the MySQL distribution for more information.
License information can be found in the COPYING file. Third party license information can be found in the THIRDPARTY file.
Bug Reports
Bug and/or error reports regarding MariaDB should be submitted at: https://jira.mariadb.org
For reporting security vulnerabilities, see our security-policy.
The code for MariaDB, including all revision history, can be found at: https://github.com/MariaDB/server