问题
I have an Item Table where all transactions are stored by different site location and business date, I also have a key for each order stored.My item table structure is as below:
Item Table
SiteID BusinessDate ItemName Units Sold Units Sale ItemNo OrderNo
----------------------------------------------------------------------------
1 06/08/2018 Apple 1 5 10001 122-1
1 06/08/2018 Coffee 1 16 10002 122-1
1 06/08/2018 Bread 2 7 10003 122-1
1 06/08/2018 Beans 9 18 10004 122-1
1 06/08/2018 Apple 2 5 10001 122-4
1 06/08/2018 Coffee 2 6 10002 122-4
1 06/08/2018 Bread 1 7 10003 122-4
1 06/08/2018 Beans 4 8 10004 122-4
2 06/08/2018 Apple 2 5 10001 122-2
2 06/08/2018 Coffee 1 6 10002 122-2
3 06/08/2018 Bread 3 5 10003 122-3
3 06/08/2018 Beans 7 17 10004 122-3
also, my master menu items table structure is as below:
Item Master
ItemNo Name Category
---------------------------------
10001 Apple C1
10002 Coffee C1
10003 Bread C2
10004 Beans C2
Expected Results: I want to Generate the following output:
ItemNo Name C1 C2
---------------------------------
10001 Apple 5 3
10002 Coffee 4 3
10003 Bread 3 6
10004 Beans 13 20
In the above output, basically we are checking each items from the master table against each category set defined within it.
The values under column C1 are the actual units sold that went together with Apple or Coffee after checking all the records order by order in my Item table.
We are taking one base item such as Apple from Master table and checking in our Item table what was sold with apple under category C1. Example: how many items of Bread was sold together with either coffee or apple?
回答1:
This will probably get you most of the way there. I did not put in logic to move the summary columns around as that would only work for two categories, and I assume you have many more.
CREATE TABLE #Master(ItemNo int,[Name] varchar(50), Category varchar(5))
INSERT INTO #Master VALUES(10001,'Apple','C1' )
INSERT INTO #Master VALUES(10002, 'Coffee' ,'C1')
INSERT INTO #Master VALUES(10003,'Bread','C2')
INSERT INTO #Master VALUES(10004,'Beans' ,'C2')
CREATe TABLE #Transactions(SiteID int,BusinessDate date,ItemName varchar(50),[Units Sold]int,[Units Sale]int,ItemNo int, OrderNo varchar(20))
INSERT INTO #Transactions VALUES(1,'06/08/2018','Apple',1,5,10001,'122-1')
INSERT INTO #Transactions VALUES(1,'06/08/2018','Coffee',1,16,10002,'122-1')
INSERT INTO #Transactions VALUES(1,'06/08/2018','Bread',2,7,10003,'122-1')
INSERT INTO #Transactions VALUES(1,'06/08/2018','Beans',9,18,10004,'122-1')
INSERT INTO #Transactions VALUES(1,'06/08/2018','Apple',2,5,10001,'122-4')
INSERT INTO #Transactions VALUES(1,'06/08/2018','Coffee',2,6,10002,'122-4')
INSERT INTO #Transactions VALUES(1,'06/08/2018','Bread',1,7,10003,'122-4')
INSERT INTO #Transactions VALUES(1,'06/08/2018','Beans',4,8,10004,'122-4')
INSERT INTO #Transactions VALUES(2,'06/08/2018','Apple',2,5,10001,'122-2')
INSERT INTO #Transactions VALUES(2,'06/08/2018','Coffee',1,6,10002,'122-2')
INSERT INTO #Transactions VALUES(3,'06/08/2018','Bread',3,5,10003,'122-3')
INSERT INTO #Transactions VALUES(3,'06/08/2018','Beans',7,17,10004,'122-3')
;WITH CTE AS (
select MS.ItemNo,MS.Name,MS.Category, SUM(TR.[Units Sold]) RootItemSold, tr.OrderNo
from #Master MS
INNER JOIN #Transactions TR on MS.ItemNo = TR.ItemNo
GROUP BY MS.ItemNo,MS.Name,MS.Category, tr.OrderNo
),
MiddleCalc as
(
select ItemNo, [Name],Category,RootItemSold,OrderNo
,(SELECT ISNULL(SUM(1),0) FROM CTE T2 where TRoot.OrderNo = t2.OrderNo and TRoot.Category <> t2.Category) HasOtherCategory
from CTE TRoot
)
SELECT ItemNo,[Name],[Category],
CASE WHEN Category = 'C1' THEN
SUM(RootItemSold)
ELSE
SUM(CASE WHEN HasOtherCategory <> 0 THEN RootItemSold ELSE 0 END) END C1,
CASE WHEN Category = 'C2' THEN
SUM(RootItemSold)
ELSE
SUM(CASE WHEN HasOtherCategory <> 0 THEN RootItemSold ELSE 0 END) END C2
FROM MiddleCalc
GROUP BY ItemNo,[Name],[Category]
回答2:
SELECT ItemNo,COUNT(items.Category) AS caategoryCOUNT,ItemName FROM items
INNER JOIN master_items ON items.ItemNo = master_items.ItemNo
GROUP BY Category;
来源：https://stackoverflow.com/questions/58890326/get-all-items-sold-based-on-a-collection-of-items-from-a-master-table-in-sql-ser