Re: converting Informix outer to Postgres

--- gurkan@resolution.com wrote:

> Hi all,
> I have been working on this Informix SQL query which has an outer join.
> I have attached Informix query and my "supposedly" solution to this query
> but I cannot get the same count. I appreciate for any help.
> Thanks.
> 
> --Informix query
> select count(u.id)
> from user u, invention i, inv_contracts ic, inv_milestones im1, milestonedef mdef1,
> OUTER inv_milestones im2,
> milestonedef mdef2
> where u.id = i.user_id and
> ic.inv_id = i.id and
> ic.contract_id = mdef1.contract_id and
> im1.inv_id = i.id and
> mdef1.id = im1.milestone_id and
> im1.datesent BETWEEN '2005-05-05' AND '2005-05-10' and
> ic.contract_id = mdef2.contract_id and
> im2.inv_id = i.id and
> mdef2.id = im2.milestone_id and
> im1.datereceived IS NULL
> 
> --Postges query
> select count(u.id)
> from dbuser u, inv_contracts ic, inv_milestones im1, milestonedef mdef1,
> --OUTER inv_milestones im2,
> milestonedef mdef2 LEFT OUTER JOIN inv_milestones im2 ON mdef2.id = im2.milestone_id
> LEFT OUTER JOIN invention i ON im2.inv_id = i.id
> where u.id = i.user_id and 
> ic.inv_id = i.id and 
> ic.contract_id = mdef1.contract_id and 
> im1.inv_id = i.id and 
> mdef1.id = im1.milestone_id and 
> im1.datesent BETWEEN '2005-05-05' AND '2005-05-10' and
> ic.contract_id = mdef2.contract_id and
> --im2.inv_id = i.id and 
> --mdef2.id = im2.milestone_id and 
> im1.datereceived IS NULL

Is there a reason that these two lines are commented out in the postgresql query?

Regards,

Richard Broersma Jr.