Hi! Since its GPLv2, I don’t see why not you read the source for optimiser trace, and implement it into the GPLv2 MariaDB Server. A lot of MariaDB Server contains merged outright or cherry picked features from MySQL and this is “fine”.
I think optimiser trace would be an awesome feature to have as well — https://jira.mariadb.org/browse/MDEV-6111 —it has been a feature request for nearly 4 years, and has existed in GA MySQL 5.6 for over 5 years. Good luck! > On 20 Mar 2018, at 15:17, Lixun Peng <pengli...@gmail.com> wrote: > > Hi Shuai! > > I think you can read MySQL source code, but you can't use any exist code of > MySQL. > You should use different code even new way to implement the same feature. > > Thanks, > Lixun > > > 2018-03-20 0:06 GMT+08:00 zhzhzoo zhang <zhzh...@gmail.com>: > Hello everybody, > > I am a first year graduate in Peking University major in math. I started to > take part in algorithm contests at grade 7 so I have a lot of programming > experience and I am very well trained in algorithms and data structures. In > my childhood memory MySQL was the most popular DBMS choice for personal > website (LAMP stack). However it was acquired by Oracle as I grew up. > In this year's GSoC projects, `optimizer trace' interested me particularly. > It would be great for MariaDB to have this functionality. This functionality > is already implemented in MySQL. So my question is, can I read MySQL's source > code implementing this function? Would that cause legal problems? Thanks very > much! > > Regards, > > Zhang Shuai. > > _______________________________________________ > Mailing list: https://launchpad.net/~maria-developers > Post to : maria-developers@lists.launchpad.net > Unsubscribe : https://launchpad.net/~maria-developers > More help : https://help.launchpad.net/ListHelp > > > > > -- > Oracle ACE Director for MySQL > Staff Database Engineer of Alibaba Cloud > > Tel: +86 18658156856 (Hangzhou) > Blog: http://www.penglixun.com > _______________________________________________ > Mailing list: https://launchpad.net/~maria-developers > Post to : maria-developers@lists.launchpad.net > Unsubscribe : https://launchpad.net/~maria-developers > More help : https://help.launchpad.net/ListHelp -- Colin Charles, http://bytebot.net/blog/ twitter: @bytebot | skype: colincharles "First they ignore you, then they laugh at you, then they fight you, then you win." -- Mohandas Gandhi _______________________________________________ Mailing list: https://launchpad.net/~maria-developers Post to : maria-developers@lists.launchpad.net Unsubscribe : https://launchpad.net/~maria-developers More help : https://help.launchpad.net/ListHelp
