I looked at the code (for better understanding of problem), and now I have some questions: Do I understand correctly, that now it is stored as an int64 value with a scale and we want to extend it, and store maximum 65 digits as in documentation? https://github.com/mariadb-corporation/mariadb-columnstore-engine/blob/master/dbcon/execplan/treenode.h#L62
We will use fixed size type or extandable? I think that I will find all answers of my questions in specification, and there is no point in asking more questions. Regards, Daniil Medvedev 2017-03-20 21:51 GMT+03:00 Andrew Hutchings <[email protected]>: > Hi Daniil, > > Many thanks for your interest. We haven't fully specified it yet (I'll > build a full specification later this week). But I suspect the following > would be involved: > > * Implementation of methods to handle MariaDB's DECIMAL format > * Support for a longer than 8-byte numeric column type (there is an > InfiniDB tree with work for this already) > * Modification of the primitives processor for the math > * Modification of the function expression processor to handle the new type > * Version upgrade support for DECIMAL from the current form to the new form > > In the mean time please let me know if you have any questions. > > Kind Regards > Andrew > (Senior Software Engineer, MariaDB ColumnStore) > > On 19/03/17 23:09, Даниил Медведев wrote: > > Hello, > > > > I took part in GSoC last year, and closed one of MariaDB tasks. Now I > > want to continue programming with MariaDB developers and solve a new > task. > > I considered some of proposed tasks, and was interested in "ColumnStore: > > Add full support for DECIMAL". > > I think this task is doable in the given time and I might solve it. > > > > P.S. My github link: https://github.com/medvdanil > > > > Regards, > > Daniil Medvedev > > > > > > > > _______________________________________________ > > Mailing list: https://launchpad.net/~maria-developers > > Post to : [email protected] > > Unsubscribe : https://launchpad.net/~maria-developers > > More help : https://help.launchpad.net/ListHelp > > > > -- > Andrew Hutchings - LinuxJedi - http://www.linuxjedi.co.uk/ >
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