maria-developers team mailing list archive

[Colin Charles <byte@xxxxxxxxxxx>]

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 <penglixun@xxxxxxxxx> 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 <zhzhzoo@xxxxxxxxx>:
> 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.
> 
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--
Colin Charles, http://bytebot.net/blog/
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"First they ignore you, then they laugh at you, then they fight you, then you win." -- Mohandas Gandhi