RE: SQL help

Maybe I'm all wet, but...

BUS has a relationship with CONT and CONT has a relationship with OCCU, but
there is no direct relationship between BUS and OCCU. You can't get from BUS
to OCCU without a CONT, so if there are BUS records without associated
CONTs, do those BUS records have associated OCCU records? 

Seems to me that all you can do if figure out what is common between BUS and
CONT (inner join), then find the BUS without an OCCU (exception join).

JJ

-----Original Message-----
From: rpg400-l-bounces+john=thejoiners.net@xxxxxxxxxxxx
[mailto:rpg400-l-bounces+john=thejoiners.net@xxxxxxxxxxxx] On Behalf Of Alan
Shore
Sent: Thursday, February 08, 2007 4:01 PM
To: RPG programming on the AS400 / iSeries
Subject: RE: SQL help

I was thinking along these same lines for my response when I realized that
there may be BUS records that have NO CONT records as well.
This is NOT that easy



Alan Shore

NBTY, Inc
(631) 244-2000 ext. 5019
AShore@xxxxxxxx

rpg400-l-bounces@xxxxxxxxxxxx wrote on 02/08/2007 04:49:35 PM:

I think this will get you what you want (not tested)...

select a.* from BUS a inner join CONT b on a.b1 = b.b1 exception join

OCCU c

on b.c1 = c.c1

JJ



-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx

[mailto:rpg400-l-bounces@xxxxxxxxxxxx]

On Behalf Of Bob Bledsoe
Sent: Thursday, February 08, 2007 3:36 PM
To: rpg400-l@xxxxxxxxxxxx
Subject: SQL help

I have 3 files, BUS, CONT, OCCU. BUS is tied to CONT by field b1 and

there

can be more the one record in CONT for each record in BUS. CONT is tied

to

OCCU by field C1. What I am trying to get is all the records ib BUSS that
have NO record in OCCU. I'm totally lost as to how to do this with SQL.
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