Re: another can this be done with sql

["R. Bruce Hoffman, Jr." <rbruceh@xxxxxxxxxxxxx>]

----- Original Message -----
From: "Smith, Mike" <Mike_Smith@RGCResources.com>
To: <midrange-l@midrange.com>
Sent: Friday, February 01, 2002 10:16 AM
Subject: another can this be done with sql


> select * from SOFILE,ACCTFILE where soact = acctact  and sostat not in
('Y',
> 'C')  and acctstat not in ('AC', 'PN') and sotype in('PEDLV', 'PDLV')
> this works fine.
>
> but i've been tasked with trying to make it more flexible.  ie status
codes
> change etc.  So i created a file that has the possible combinations of
> Sostat, acctstat, and sotype(maybe i should have 3 files)  ie Y,AC,PEDLV
> Y,PN,PEDLV
> can i do this the way i've set this up, if so how?

Ok, I have to assume some things about your process:

>From your note, you said "possible combinations" so I have to assume that
you are completing a three file join now, not trying to implement the "not
in (" selections.

so, it should work with the following form:

select * from sofile s
join acctfile on soact = acctact  a
join codefile c on s.sostat = c.stat and a.acctstat = c.acctstat and
s.sotype = c.sotype

That last statement says "select records based on the codes all matching
some combination in the third file".

As for using three separate files in place of the third, the join would not
work the same. Three separate files would have the effect of "oring" the
join logic, not "anding" it.

===========================================================
R. Bruce Hoffman, Jr.
 -- IBM Certified Specialist - iSeries Administrator
 -- IBM Certified Specialist - RPG IV Developer

"Suppose you were an idiot...
  And suppose you were a member of Congress...
  But I repeat myself."
    - Mark Twain