Re: [HACKERS] [PATCHES] patch implementing the multi-argument aggregates (SOC project)

2006-07-26 Thread Tom Lane
Gregory Stark <[EMAIL PROTECTED]> writes:
> Tom Lane <[EMAIL PROTECTED]> writes:
>> This patch is nowhere near ready for submission :-(.  Most of the
>> comments seem to be "I don't know what to do here" ...

> Just to be clear, I think what Tom's saying it's not ready to be *applied*.
> Sending patches to this list early and often during development is generally
> encouraged.

Indeed, but if that was the point we should have been seeing drafts of
this patch long ago.  I interpreted Sergey's submission as "getting this
in before feature freeze", and in that context the bar is higher.  If a
patch isn't pretty nearly ready to be applied when the freeze deadline
arrives, we won't wait around for it.

regards, tom lane

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Re: [HACKERS] [PATCHES] patch implementing the multi-argument aggregates (SOC project)

2006-07-26 Thread Gregory Stark
Tom Lane <[EMAIL PROTECTED]> writes:

> This patch is nowhere near ready for submission :-(.  Most of the
> comments seem to be "I don't know what to do here" ...

Just to be clear, I think what Tom's saying it's not ready to be *applied*.
Sending patches to this list early and often during development is generally
encouraged.

-- 
  Gregory Stark
  EnterpriseDB  http://www.enterprisedb.com


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Re: [HACKERS] [PATCHES] patch implementing the multi-argument aggregates (SOC

2006-07-24 Thread Sergey E. Koposov

On Mon, 24 Jul 2006, Tom Lane wrote:


"Sergey E. Koposov" <[EMAIL PROTECTED]> writes:

Since the feature freeze is in a few days, I'm sending the first iteration
of my patch implementing the multi-argument aggregates (PolyArgAgg) (SOC
project)


This patch is nowhere near ready for submission :-(.  Most of the


:-(
But now at least I know that...


comments seem to be "I don't know what to do here" ...



No that's not quite true... I have only ~ 2-3 such comments, all others
just express that I marked the places where I've had any little doubts 
and which I'll check additionally...



A general hint on the polymorphic stuff is that you should be able to
exactly duplicate what's done for polymorphic functions --- or even
better, get rid of the separate code for aggregates and just invoke
the existing logic for functions.  (You might need to refactor code
a little bit to separate out the common functionality.)

Instead of copying data inside advance_transition_function, it might
be better for the caller to store the values into the right fields
of a temporary FunctionCallInfoData struct, and just pass that to
advance_transition_function.


Thank you for the hints, I'll think about them...


The names for the new aggregates seem a bit, how to say, terse and
unfriendly.  SQL generally tends to a more verbose style of naming.



The names for the functions came from SQL 2003 standart...

Regards,
Sergey

***
Sergey E. Koposov
Max Planck Institute for Astronomy/Sternberg Astronomical Institute
Tel: +49-6221-528-349
Web: http://lnfm1.sai.msu.ru/~math
E-mail: [EMAIL PROTECTED]

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Re: [HACKERS] [PATCHES] patch implementing the multi-argument aggregates (SOC project)

2006-07-24 Thread Tom Lane
"Sergey E. Koposov" <[EMAIL PROTECTED]> writes:
> Since the feature freeze is in a few days, I'm sending the first iteration 
> of my patch implementing the multi-argument aggregates (PolyArgAgg) (SOC 
> project)

This patch is nowhere near ready for submission :-(.  Most of the
comments seem to be "I don't know what to do here" ...

A general hint on the polymorphic stuff is that you should be able to
exactly duplicate what's done for polymorphic functions --- or even
better, get rid of the separate code for aggregates and just invoke
the existing logic for functions.  (You might need to refactor code
a little bit to separate out the common functionality.)

Instead of copying data inside advance_transition_function, it might
be better for the caller to store the values into the right fields
of a temporary FunctionCallInfoData struct, and just pass that to
advance_transition_function.

The names for the new aggregates seem a bit, how to say, terse and
unfriendly.  SQL generally tends to a more verbose style of naming.

regards, tom lane

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