FIFO in the sql statement...
HelloSuppose we have two tables:
(1) deliveries of items according to a contract
create the table contracted_dlv
(item_id number (2),)
date of contracted_date,
number of contracted_qty);
(2) actual delivery of items in the warehouses of the customer
create the table real_dlv
(item_id number (2),)
date of dlv_date,
number of dlv_qty);
As the two tables can be connected to each other completely... because there is not
the information in the real_dlv table that delivery of X in the warehouse takes place in
conformity of the delivery as contracted, the FIFO algorithm must be used as:
The first quantity delivered (table real_dlv) is made in order to accomplish the first
quantity (table contracted_dlv) required / contract, until the first contracted
amount would come true. Then the second contract qty... etc
For example: item_id: 10
insert into contracted_dlv (item_id, contracted_date, contracted_qty)
values(10,'03/01/2011',6);
insert into contracted_dlv (item_id, contracted_date, contracted_qty)
values(10,'03/02/2011',15);
insert into real_dlv (item_id, dlv_date, dlv_qty)
values(10,'7/01/2011',3);
insert into real_dlv (item_id, dlv_date, dlv_qty)
values(10,'17/01/2011',2);
insert into real_dlv (item_id, dlv_date, dlv_qty)
values(10,'23/01/2011',5);
insert into real_dlv (item_id, dlv_date, dlv_qty)
values(10,'23/02/2011',4);
insert into real_dlv (item_id, dlv_date, dlv_qty)
values(10,'27/02/2011',6);
insert into real_dlv (item_id, dlv_date, dlv_qty)
values(10,'02/03/2011',5);
Now I want in sql statement (even using a pl/sql function that can be used in sql)
an output such as:
item_id contracted_date contracted_qty dlv_qty
03/01/2011 10, 6 6 (1 *)
03/02/2011 10, 15 19 (2 *)
(1 *) the dlv_qty arises as the result of what follows (3 + 2 + (5-4)) to fill the 6pieces of
the first delivery as contracted.
(2 *) the dlv_qty arises as the result of what follows (4 + 4 + 6 + 5) to fill the 15pieces of
the second delivery under contracted (note that for this second contract delivery the 4pieces)
the issue of the third actual delivery is used).
How I write a sql stmt to achieve the above...?
Notes:
(1) for simplicity, I wrote only two main tables and columns in them.
(2) if the sum (contracted_qty) < sum (dlv_qty) then you should consider that deliveries carry out
then contracted quantity (as has happened in some examples of data that I posted above).
(3) it must be by point so many records there are in the contracted_dlv table.
(4) I use DB 10 g v.2
Thank you
SIM
Hello
That's what you asked for:
WITH contracted_rt AS
(
SELECT item_id, contracted_date, contracted_qty
, SUM (contracted_qty) OVER ( PARTITION BY item_id
ORDER BY contracted_date
) AS total_qty
FROM contracted_dlv
)
, real_rt AS
(
SELECT item_id, dlv_date, dlv_qty
, SUM (dlv_qty) OVER ( PARTITION BY item_id
ORDER BY dlv_date
) AS total_qty
FROM real_dlv
)
, real_final AS
(
SELECT item_id
, SUM (dlv_qty) AS total_qty
, MAX (dlv_date) AS dlv_date
FROM real_dlv
GROUP BY item_id
)
SELECT c.item_id
, c.contracted_date
, c.contracted_qty
, CASE
WHEN f.total_qty IS NULL
THEN 0
WHEN c.total_qty <= r.total_qty
THEN c.contracted_qty
ELSE GREATEST ( f.total_qty - (c.total_qty - c.contracted_qty)
, 0
)
END AS dlv_qty
, CASE
WHEN c.total_qty < r.total_qty
THEN (
SELECT MIN (dlv_date)
FROM real_rt
WHERE item_id = c.item_id
AND total_qty > c.total_qty - c.contracted_qty
)
WHEN c.total_qty = r.total_qty
THEN r.dlv_date
WHEN f.total_qty > c.total_qty - c.contracted_qty
THEN f.dlv_date
END AS dlv_date
FROM contracted_rt c
LEFT OUTER JOIN real_rt r ON c.item_id = r.item_id
AND c.total_qty BETWEEN r.total_qty - r.dlv_qty
AND r.total_qty
LEFT OUTER JOIN real_final f ON c.item_id = f.item_id
ORDER BY c.item_id
, c.contracted_date
;
Sorry, I don't have time for an explanation now. I'll post one tomorrow, if I can.
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slaughter by email after having pushed the Send button
I accidentally send 4 emails with an attachment to the same address. It is great and will not be appreciated at the other end. How can I stop 3 or all courses?
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I have a new touchpad and I try the kindle app. I downloaded a couple of free books on Amazon. The app gives me a blank screen after about 10 seconds, and it seems no matter what I do. Should I have a broken touch pad or a broken Kindle app? How c
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I installed Security Essentials and it causes Defender to stop the run.
* Original title: Security Essentials I installed Security Essentials and it causes Defender to stop the run. The only way I can turn the Defender needs to restore my computer to before Security Essentials. I tried twice and got the same result. Secu
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How to fix error 0 x 00000035 no irp stack locations more
My computer started acting a little slower so I decided to restart it, and when he went to the symbol for windows at startup normal music/noise got all weird sounding and showed me the error blue screen of 0 x 00000035 No. PRI more stack locations. I
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OK, I'll do my best to explain what I'm trying to do, so that is: I left my PC the original location in the living room where the internet has been implemented in my room where it is not set. I got a very long cable and it's that winds through my kit