Thread: plpython sets

plpython sets

From
Matteo Bertini
Date:
Hello all,
I'm working with pl/python and I'd like to use the set returning
function feature.

I'm not working in a debug python, so the iterator bug is not a problem me.

Can someone point me to some plpython.c "setof" enabled sources?

Hint to build them in an ubuntu dapper environment are welcome too :-P !

Thanks a lot every developer involved in postgres!
PL/setyourlanguagehere is fantastic!

Matteo Bertini

Attachment

Re: plpython sets

From
Tino Wildenhain
Date:
Matteo Bertini wrote:
> Hello all,
> I'm working with pl/python and I'd like to use the set returning
> function feature.
> 
> I'm not working in a debug python, so the iterator bug is not a problem me.
> 
> Can someone point me to some plpython.c "setof" enabled sources?
> 
> Hint to build them in an ubuntu dapper environment are welcome too :-P !
> 
> Thanks a lot every developer involved in postgres!
> PL/setyourlanguagehere is fantastic!


http://python.projects.postgresql.org/

This works very well for me - although it needs some more
finish (docs and so on) maybe if more people using it
it can get better.

SRF - even lazy ones (e.g. generators) work nicely there.


Regards
Tino Wildenhain


Re: plpython sets

From
Hannu Krosing
Date:
Ühel kenal päeval, E, 2006-07-17 kell 22:54, kirjutas Tino Wildenhain:
> Matteo Bertini wrote:
> > Hello all,
> > I'm working with pl/python and I'd like to use the set returning
> > function feature.
> > 
> > I'm not working in a debug python, so the iterator bug is not a problem me.
> > 
> > Can someone point me to some plpython.c "setof" enabled sources?
> > 
> > Hint to build them in an ubuntu dapper environment are welcome too :-P !
> > 
> > Thanks a lot every developer involved in postgres!
> > PL/setyourlanguagehere is fantastic!
> 
> 
> http://python.projects.postgresql.org/
> 
> This works very well for me - although it needs some more
> finish (docs and so on) maybe if more people using it
> it can get better.
> 
> SRF - even lazy ones (e.g. generators) work nicely there.

We at Skype or more precisely Sven Suursoho :) , has added these to the
version of plpython in the core and they will be available in 8.2. 

Code for 8.0 and 8.1 will be available on request, and soon also from
https://developer.skype.com/


Enchancements added are:

* named parameters (args[] still valid)
* returning composite types (dict, tuple, list, class)
* returning SETOF as any iterable object (list, tuple, iterator,
generator)

-- 
----------------
Hannu Krosing
Database Architect
Skype Technologies OÜ
Akadeemia tee 21 F, Tallinn, 12618, Estonia

Skype me:  callto:hkrosing
Get Skype for free:  http://www.skype.com




Re: plpython sets

From
Matteo Bertini
Date:
Tino Wildenhain ha scritto:
> http://python.projects.postgresql.org/
> This works very well for me - although it needs some more
> finish (docs and so on) maybe if more people using it
> it can get better.
>
> SRF - even lazy ones (e.g. generators) work nicely there.
>
>
> Regards
> Tino Wildenhain
>
>
eheh... I wasn't able to build it...

In the meantime some guy in the list provided me a "setof" enabled
plpython.c. Now built and working fine!

Do someone know why the back-end effort is duplicated?

Thanks,
Matteo Bertini

Attachment

Re: plpython sets

From
Hannu Krosing
Date:
Ühel kenal päeval, E, 2006-07-17 kell 23:22, kirjutas Matteo Bertini:
> Tino Wildenhain ha scritto:
> > http://python.projects.postgresql.org/
> > This works very well for me - although it needs some more
> > finish (docs and so on) maybe if more people using it
> > it can get better.
> >
> > SRF - even lazy ones (e.g. generators) work nicely there.
> >
> >
> > Regards
> > Tino Wildenhain
> >
> >   
> eheh... I wasn't able to build it...
> 
> In the meantime some guy in the list provided me a "setof" enabled
> plpython.c. Now built and working fine!
> 
> Do someone know why the back-end effort is duplicated?

http://python.projects.postgresql.org/ seems to be aiming at a much
larger python/postgres integration scheme than src/pl/python.

and it has taken a different and more pythonic approach at many places
which is nice but takes a lot longer to mature.

-- 
----------------
Hannu Krosing
Database Architect
Skype Technologies OÜ
Akadeemia tee 21 F, Tallinn, 12618, Estonia

Skype me:  callto:hkrosing
Get Skype for free:  http://www.skype.com