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  3. August 2012

RE: how to create logical file with one key over two fields

Yes it does work to create a multi-format LF: (names have been changed - expanded - to make them readable even though they wont compile as such)

(There is a nice example in "Database DDS" by Charlie Massoglia)

Filename: ProductByUPC1or2

R ProductRec1 PFILE(ProductByItem#)

UPC RENAME(UPC1field)
K UPC
S UPC COMP(NE 0)


R ProductRec2 PFILE(ProductByItem#)

UPC RENAME(UPC2field)
K UPC
S UPC COMP(NE 0)




ProductByItem# file:

Item# UPC1 UPC2
AAA 111111111 0
BBB 777777777 0
CCC 0 4444444444


So if I read file "ProductByUPC1or2",

the first record read is item# AAA, followed by item#CCC, and then item#BBB.

It works perfectly, except:

Problems are:

1) I am forced to name each field in the DDS. I would like it to pull in all fields so the file is interchangeable in pgms with the PF. If someone adds a field to the product file in the future, the pgms would not get the new fields.

2) S/W like DBU and Query/400 don't handle multi-format LFs very well. Query doesn't even seem to see the records. DBU shows them as a long flat record (no fields).

Is it possible to get this to work so it looks like one record format to pgms?? And to NOT have to name each field that I want included in the LF; ie I would like to take ALL fields from the PF without individually naming each field?

Thanks!





-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Alan Shore
Sent: Thursday, August 23, 2012 1:20 PM
To: Midrange Systems Technical Discussion
Subject: RE: how to create logical file with one key over two fields

That makes sense, but to answer your question - I didn't think it was possible to create a logical using a key that is either fieldA or fieldB.
It should be interesting to see if anyone has an answer.

Alan Shore
Programmer/Analyst, Direct Response
E:AShore@xxxxxxxx
P:(631) 200-5019
C:(631) 880-8640
"If you're going through Hell, keep going" - Winston Churchill


-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Stone, Joel
Sent: Thursday, August 23, 2012 2:12 PM
To: 'Midrange Systems Technical Discussion'
Subject: RE: how to create logical file with one key over two fields

Its just an example - I am not doing this for a product file nor UPC but it is simple to explain instead of the mundane old junk files that I am working with.


-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Alan Shore
Sent: Thursday, August 23, 2012 12:44 PM
To: Midrange Systems Technical Discussion
Subject: RE: how to create logical file with one key over two fields

Interesting that you would keep the upc code on the product master as a product can have MULTIPLE upc codes We have a separate file with product number, upc code which means that you can have unlimited number of upc codes per product (well - not exactly unlimited, but a LARGE number)

Alan Shore
Programmer/Analyst, Direct Response
E:AShore@xxxxxxxx
P:(631) 200-5019
C:(631) 880-8640
"If you're going through Hell, keep going" - Winston Churchill


-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Stone, Joel
Sent: Thursday, August 23, 2012 1:06 PM
To: Midrange Systems Technical Discussion
Subject: how to create logical file with one key over two fields

If I have an product master file with two UPC fields, can I create a LF which will read the product file by either UPC?

Also want to be able to view with DBU with multiple record screen.

I can do this with a multi-format LF, but DBU displays (in multi-record screen) as one large field (instead of product name, product desc, UPC1, UPS2, etc).

Also can I do this WITHOUT naming each field in the PF?

Is there an better method to do this, for example SQL??

Thanks!

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