Re: Implementation of GROUPING SETS (T431: Extended grouping capabilities)

2009/9/3 Joshua Tolley <eggyknap(at)gmail(dot)com>:
> On Thu, Sep 03, 2009 at 01:19:25AM +0400, Олег Царев wrote:
>> After week-lengthed investigation, now i 'm sure - my level of
>> qualification not enough for implementation task "GROUPING SETS".
>> I require documentation about the executor and the planner, i can't
>> understand scheme of work by source code.
>> Many code, many cases, but very little information "what is it" and
>> "how thos work". May be i stupid.
>
> I doubt you're stupid; a stupid person wouldn't know what GROUPING SETS meant,
> wouldn't bother finding out, and certainly wouldn't bother trying to implement
> it. It's very helpful that you've let us know you're not working on it. That
> way Pavel, if he finds he has time and interest, or someone else, can work on
> it without fear of conflicting with what you're doing. Thanks for your work;
> please don't get discouraged!

There some ways, how implement GROUPING SETS. Currently I don't would
to continue on this topic without some sponsoring. It got too my time
- and I am able to implement it only as some special variant of CTE.
Second way is total grouping planner refactoring - what is out of me.

regard
Pavel

>
> --
> Joshua Tolley / eggyknap
> End Point Corporation
> http://www.endpoint.com
>
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