Can i declare TOP to pull the value from another table - sql-server

Question

I am looking to gather the TOP diff from the inventory table, where the newcount <> quantity.
Basically, if my inventory count was different than it should have been, I want to search my remaining inventory for the TOP # of missing parts. This brings me back an instock id to ensure that I am removing the oldest parts first.
I could have 900 of these, so I am looking for a sql command that returns the results from partsremainingfifo based on the diff and partnumber in inventory.
select
PartNumber,
Quantity,
NewCount,
diff
from Inventory
where NewCount <> Quantity
+------------+----------+----------+------+
| PartNumber | Quantity | NewCount | diff |
+------------+----------+----------+------+
| 2871451 | 1 | 0 | 1 |
| 4932615 | 6 | 1 | 5 |
+------------+----------+----------+------+
select top 1
id, PartNumber,
PartDescription,
Quantity,
TotalPrice,
Brand,
Location,
Account
from PARTSREMAININGFIFO
where PartNumber = '2871451'
+------+------------+-------------------+----------+------------+---------+----------+----------+
| id | PartNumber | PartDescription | Quantity | TotalPrice | Brand | Location | Account |
+------+------------+-------------------+----------+------------+---------+----------+----------+
| 9183 | 2871451 | AFM DEVICE GASKET | 1 | 19.815225 | CUMMINS | A1 | 6015-Z |
+------+------------+-------------------+----------+------------+---------+----------+----------+
select top 5
id,
PartNumber,
PartDescription,
Quantity,
TotalPrice,
Brand,
Location,
Account
from PARTSREMAININGFIFO
where PartNumber = '4932615'
+------+------------+-----------------+----------+------------+---------+----------+---------+
| id | PartNumber | PartDescription | Quantity | TotalPrice | Brand | Location | Account |
+------+------------+-----------------+----------+------------+---------+----------+---------+
| 3264 | 4932615 | GASKET | 1 | 2.907144 | CUMMINS | A1 | 6015-Z |
| 9780 | 4932615 | GASKET | 1 | 5.053475 | CUMMINS | A1 | 6015-Z |
| 9781 | 4932615 | GASKET | 1 | 5.053475 | CUMMINS | A1 | 6015-Z |
| 9782 | 4932615 | GASKET | 1 | 5.053475 | CUMMINS | A1 | 6015-Z |
| 9783 | 4932615 | GASKET | 1 | 5.053475 | CUMMINS | A1 | 6015-Z |
+------+------------+-----------------+----------+------------+---------+----------+---------+

Answer 1

I understand what you want now, and I think you'll need a cursor. One important note, you must specify an order by when you use TOP unless you don't care what rows come back. Read this article.
Here is how you'd implement this:
--create some sample data that you gave
declare #inventory table ( PartNumber int,
Quantity int,
NewCount int,
diff int)
insert into #inventory
values
(2871451,1,0,1),
(4932615,6,1,5)
declare #PARTSREMAININGFIFO table ( id int,
PartNumber int,
PartDescription varchar(64),
Quantity int,
TotalPrice decimal (8,6),
brand varchar(64),
Location varchar(16),
Account varchar(64))
insert into #PARTSREMAININGFIFO
values
(9183,2871451,'AFM DEVICE GASKET',1,19.815225,'CUMMINS','A1','6015-Z'),
(9183,2871451,'AFM DEVICE GASKET',1,19.815225,'CUMMINS','A2','6015-Z'), --notice the extra (2nd) row here for part 2871451
(9183,2871451,'AFM DEVICE GASKET',1,19.815225,'CUMMINS','A3','6015-Z'), --notice the extra (3nd) row here for part 2871451
(3264,4932615,'GASKET',1,2.907144,'CUMMINS','A1','6015-Z'),
(9780,4932615,'GASKET',1,5.053475,'CUMMINS','A1','6015-Z'),
(9781,4932615,'GASKET',1,5.053475,'CUMMINS','A1','6015-Z'),
(9782,4932615,'GASKET',1,5.053475,'CUMMINS','A1','6015-Z'),
(9783,4932615,'GASKET',1,5.053475,'CUMMINS','A1','6015-Z'),
(9783,4932615,'GASKET',1,5.053475,'CUMMINS','A6','6015-Z') --notice the 6th (extra) row here for part 4932615
--staging table for your results
declare #tempResults table ( id int,
PartNumber int,
PartDescription varchar(64),
Quantity int,
TotalPrice decimal (8,6),
brand varchar(64),
Location varchar(16),
Account varchar(64))
declare cur cursor local fast_forward for
select distinct
PartNumber,
diff
from (select
PartNumber,
Quantity,
NewCount,
diff
from #inventory
where NewCount <> Quantity) x
declare #partNumber int
declare #diff int
open cur
fetch next from cur into #partNumber, #diff
while ##FETCH_STATUS = 0
begin
insert into #tempResults
select top (#diff)
id,
PartNumber,
PartDescription,
Quantity,
TotalPrice,
Brand,
Location,
Account
from #PARTSREMAININGFIFO
where PartNumber = #partNumber
order by Quantity --note you need to specify WHAT you want to order by
fetch next from cur into #partNumber, #diff
end
select *
from #tempResults
order by PartNumber
close cur
deallocate cur