Please excuse me if I missed it, but, like Daniel, I am trying to figure out exactly what the objective is here. Superficially, I admit, it seems simple: How much (quantity) do we have in the warehouse for a specific item. But it could be that we want to know how much is available for shipment (unallocated).
As Daniel said two tables are needed: (1) an Item Master, and (2) a Lot Inventory. The Lot Inventory is needed only, in my experience, for inventory valuation at month-end; i.e., each Lot (or Box) was bought for a different prices. Here, by the way, I am assuming that we are talking about generic items, such as books, candy, etc., not high value, discrete items, such as jewelry that are inventoried, well, discretely.
If all you want to know is how much of any item, regardless of price, is in inventory, then an SQL over the Lot Table will suffice, as Daniel illustrated. However, if you want to know how much is available for sales, then one must include any order allocation. That could be done in the Lot Table, but the minimum wage packers in the warehouse will pull the item from whichever Lot (Box) is closest at the time. Because of that and other quirks, I always keep the allocation in the Item Master and then, as the order is filled, reduce inventory in the Lot/Boxes since, at the end of the day the auditors (usually) do not care which box was used.
This is, of course, a simplification; it ignores whether the inventory is valued on a FIFO or LIFO basis. That distinction is usually only pertinent when the order is filled and on-hand inventory is reduced. Naturally, your auditor’s rules may differ or vary somewhat. On the other hand, as someone else speculated earlier, this seems like a textbook exercise; in which case ignore everything I said. If not, get the objective defined better and the rules needed to meet that objective.
Jerry C. Adams
IBM i Programmer/Analyst
What the world needs is more geniuses with humility. There are so few of us left.
--
NMM&D
615-585-2175
-----Original Message-----
From: RPG400-L [mailto:rpg400-l-bounces@xxxxxxxxxxxxxxxxxx] On Behalf Of Daniel Gross
Sent: Sunday, September 10, 2023 4:12 AM
To: RPG programming on IBM i
Subject: Re: Adding all the box quantities for a item
Hi Tim,
so I'm trying to understand and explain a solution.
First - I think you have one table (I will call it "items") with the item
master data, and another table (I will call it "boxes") which contains one
record for each box of records, and a quantity how many items are in each
box. Is this near?
If yes - simply use SQL to query both tables at the same time:
exec sql declare csrItemBoxes cursor for
select boxes.id,
max(boxes.item_id),
case
when boxes.id is not null
then max(items.description)
else "Total Quantities:"
end,
sum(boxes.quantity)
from boxes
join items on items.id = boxes.item_id
where boxes.item_id = :itemid
group by rollup (boxes_id);
Now this will give your cursor one line per box and a summary line for all
boxes.
Now loop through that cursor and add a subfile line for each row fetched.
If the "boxes.id" field is "null", you have the summary line - in this
line, the description field will be filled with the text "Total
Quantities:".
Maybe set a flag to give that line another color, and deactivate a line
selection option field, because this is a summary line.
HTH
Daniel
P.S.: As far as I can see, you haven't received a proper RPGLE training,
and now you should change/maintain existing programs. Ask your supervisor
to give you a proper training, find yourself a training
(like [1]systemideveloper.com) or find a tutor/coach who is willing to
help you (for profit or not) - just my 2ct.
Am 09.09.2023 um 20:52 schrieb tim ken <timk2574@xxxxxxxxx>:
Hi,
They are like below :-
On display file screen (a subfile)
Enter item number :- .................
Once we enter item number then program need to look for this item number
in
a item master file and if it successfully finds an item in it then it
further checks corresponding boxes ( for each item there might be
multiple
such boxes in box id field of this same item master file) and for each
such box there is corresponding 'quantity' field is there in same item
master file so we need to add all such quantities for all the individual
boxes and then finally sum it up and show on display file screen.
Just for more clarification:-
Box no. Quantity
Box 1 5
Box 2 7
Box 3 15
Then just for example if all the above 3 boxes are there for item number
'xyz' then
Program should be able to read this item master file for a specfic item
number which is entered on display file(which is a subfile with record,
control, header and footer but does not contain column headings on
display
screen for these boxes but such multiple boxes are present in this item
master file for each such item number )
And then program should add quantities for all these boxes and on the
display file(subfile) it should be able to display like :- "Tot
Quantities: 27 Sum"
Thanks a lot.. ..
On Sun, Sep 10, 2023, 00:00 Glenn Gundermann
<glenn.gundermann@xxxxxxxxx>
wrote:
Sorry, my previous reply was incorrect. No need for GROUP BY.Is each
box a
separate row in the item master table or is each box and quantity a
separate column in the same row? If the former:exec sqlSELECT
sum(quantity) INTO :totalQtyFROM item_master WHERE item_number =
:itemNo;Your display file will define the field TOTALQTY.Yours
truly,Glenn
Gundermannglenn.gundermann@xxxxxxxxx(416) 317-3144
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