maria-developers team mailing list archive

[Даниил Медведев <medvdanil@xxxxxxxxx>]

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 <andrew@xxxxxxxxxxxxxxx>:

> 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
> >
> >
> >
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>
> --
> Andrew Hutchings - LinuxJedi - http://www.linuxjedi.co.uk/
>