Re: How to join function with a table? - Mailing list pgsql-general

On Fri, 2005-08-05 at 10:53 -0500, Yudie Pg wrote:
> Hi everyone,
>
> I have a function returning set of date called datelist(date,date)
> example:
> select * from datelist('8/1/2005, 8/5/2005');
> 8/1/2005
> 8/2/3005
> 8/3/2004
> 8/4/2005
> 8/5/2005
>
> I would like to join this function with a table
> create table payment(
>  id int4 not null,
>  date_start date,
>  date_end date
> )
> id | date_start | date_end
> ----------------------------------------
> 1  | 8/1/2005  | 8/2/2005
> 2  | 8/4/2005  | 8/6/2005
>
> I wish I could do join that returns something like this with the
> function
>
> id | datelist
> ------------------
> 1 | 8/1/2005
> 1 | 8/2/2005
> 2 | 8/4/2005
> 2 | 8/5/2005
> 2 | 8/6/2005
>

what about something like

  select id,datelist
  from payment as p,
       (select * from datelist('8/1/2005, 8/5/2005')) as list
  where datelist between p.date_start and p.date_end;


gnari