RE: SQL Select This and/or That -- MIDRANGE-L

If Alan's is correct why not just do this:

select a.field1, b.RcdType, b.rdItmVlu from HeaderFile A, DetailFile B
WHERE a.Key1 = B.Key1
AND b.RcdType in ( 'ABC','XYZ')
AND b.rdItmVlu <> ' '

Doing it on a row by row basis rather than two columns pointing to the same file, otherwise down the road you might have DetailFile C, DetailFile D, DetailFild E, etc,

-----Original Message-----
From: Alan Shore [mailto:ashore@xxxxxxxx]
Sent: Wednesday, March 23, 2016 12:22 PM
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx>
Subject: RE: SQL Select This and/or That

Hi Jack
Try this
select a.field1, b.rdItmVlu, c.rdItmVlu from HeaderFile A, DetailFile B, DetailFile C

WHERE (a.Key1 = B.Key1
AND b.RcdType = 'ABC'
AND b.rdItmVlu <> ' ')
OR
(a.Key1 = c.Key1
AND c.RcdType = 'XYZ'
AND c.rdItmVlu <> ' ')

Alan Shore
E-mail : ASHORE@xxxxxxxx
Phone [O] : (631) 200-5019
Phone [C] : (631) 880-8640
'If you're going through hell, keep going.'
Winston Churchill

-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Jack Prucha
Sent: Wednesday, March 23, 2016 1:12 PM
To: midrange-l@xxxxxxxxxxxx
Subject: SQL Select This and/or That

I'm having a hard time visualizing how to do this. There's a "Header" and "Detail" file where I want to return information from both whenever at least one of these situations occur. What I've coded only returns if both situations occur. This gets me most of what I want:

select a.field1, b.rdItmVlu, c.rdItmVlu from HeaderFile A, DetailFile B, DetailFile C

WHERE a.Key1 = B.Key1
AND b.RcdType = 'ABC'
AND b.rdItmVlu <> ' '

AND a.Key1 = c.Key1
AND c.RcdType = 'XYZ'
AND c.rdItmVlu <> ' '

Selection should occur if either the ABC or XYZ record has the, well, undesired values rather than my example which selects only if both records meet the selection criteria. I know I can use the Coalesce to default the rditmvlu for which ever record isn't there. But how can I "subselect" and return the value back to the original select? Can't assume each record type exists.

7.1 with all the TRs installed

Thanks in advance!

Jack Prucha
Programming Team Supervisor
College Foundation, Inc.
919.835.2530

This email, including any documents, files, or previous email messages attached to it, has been sent from an email account of College Foundation Inc., (CFI) and may contain confidential, proprietary, or legally privileged information belonging to CFI. If you are not the intended recipient, any dissemination, distribution, or copying of this email or its attachments is strictly prohibited. If you have received this email in error, please immediately notify the sender by email and destroy the original email and any attachments.
--
This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing list To post a message email: MIDRANGE-L@xxxxxxxxxxxx To subscribe, unsubscribe, or change list options,
visit: http://lists.midrange.com/mailman/listinfo/midrange-l
or email: MIDRANGE-L-request@xxxxxxxxxxxx Before posting, please take a moment to review the archives at http://archive.midrange.com/midrange-l.

Please contact support@xxxxxxxxxxxx for any subscription related questions.

--
This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing list To post a message email: MIDRANGE-L@xxxxxxxxxxxx To subscribe, unsubscribe, or change list options,
visit: http://lists.midrange.com/mailman/listinfo/midrange-l
or email: MIDRANGE-L-request@xxxxxxxxxxxx Before posting, please take a moment to review the archives at http://archive.midrange.com/midrange-l.

Please contact support@xxxxxxxxxxxx for any subscription related questions.