Thanks Filip,
with your help I came a step further.   :)

Could I do the folowing without using a function?


CREATE OR REPLACE FUNCTION month_series ( date )
  RETURNS table ( monthnr integer )
AS
$BODY$

    select  to_char ( m, 'YYYYMM' )::integer
from generate_series ( $1, current_date, '1 month'::interval ) as m

$BODY$ LANGUAGE sql STABLE;


select  project_id, month_series ( createdate )
from    projects
order by 1, 2;



Am 22.01.2013 22:52, schrieb Filip RembiaƂkowski:
or even

select m from generate_series( '20121101'::date, '20130101'::date, '1
month'::interval) m;



On Tue, Jan 22, 2013 at 3:49 PM, jan zimmek <jan.zim...@web.de> wrote:
hi andreas,

this might give you an idea how to generate series of dates (or other 
datatypes):

select g, (current_date + (g||' month')::interval)::date from 
generate_series(1,12) g;

regards
jan

Am 22.01.2013 um 22:41 schrieb Andreas <maps...@gmx.net>:

Hi
I need a series of month numbers like  201212, 201301 YYYYMM to join other 
sources against it.

I've got a table that describes projects:
projects ( id INT, project TEXT, startdate DATE )

and some others that log events
events( project_id INT, createdate DATE, ...)

to show some statistics I have to count events and present it as a view with 
the project name and the month as YYYYMM starting with startdate of the 
projects.

My problem is that there probaply arent any events in a month but I still need 
this line in the output.
So somehow I need to have a select that generates:

project 7,201211
project 7,201212
project 7,201301

It'd be utterly cool to get this for every project in the projects table with 
one select.

Is there hope?


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