sqlserver records need to come horizontly - sql

Question

I have table structure below,
Table Name: Customer
Cust_id Cust_Name
------------------------
101 John
102 Peter
Table Name: Loan_Details
Id LoanName Cust_Id Amt
-----------------------------------------
1 PersonalLoan 101 2L
2 PersonalLoan 101 3L
3 HomeLoan 101 10L
Table Name: Product
Id Cust_Id ProductName Cost
-----------------------------------------
1 101 Product1 1000
2 101 Product1 2000
3 101 Product1 3000
I need result horizontly in below structure, is it possble?
Cust_Id Cust_Name PersonalLoan Amt HomeLoan Amt ProductName Cost
--------------------------------------------------------------------------------
101 John PersonalLoan 2L HomeLoan 10L Product1 1000
101 John PersonalLoan 3L NULL NULL Product1 2000
101 John NULL NULL NULL NULL Product1 3000

Answer 1

You can try this query.
If you want to list "Peter" too, just change INNER JOIN to LEFT JOIN in the CusPrd subquery.
DECLARE #Customer TABLE (Cust_id VARCHAR(10), Cust_Name VARCHAR(20))
INSERT INTO #Customer
VALUES
('101','John'),
('102','Peter')
DECLARE #Loan_Details TABLE (Id INT, LoanName VARCHAR(20), Cust_Id VARCHAR(10), Amt VARCHAR(10))
INSERT INTO #Loan_Details
VALUES
(1,'PersonalLoan','101','2L'),
(2,'PersonalLoan','101','3L'),
(3,'HomeLoan','101','10L')
DECLARE #Product TABLE (Id INT, Cust_Id VARCHAR(10), ProductName VARCHAR(20), Cost INT)
INSERT INTO #Product
VALUES
(1,'101','Product1',1000),
(2,'101','Product1',2000),
(3,'101','Product1',3000)
;WITH Loan AS
(
SELECT *,
RN = ROW_NUMBER() OVER (PARTITION BY LoanName ORDER BY Id)
FROM #Loan_Details
),
CusPrd AS
(
SELECT
C.Cust_id,
C.Cust_Name,
P.ProductName,
P.Cost,
P.Id,
RN = ROW_NUMBER() OVER (PARTITION BY C.Cust_id ORDER BY P.Id)
FROM
#Customer C
INNER JOIN #Product P ON C.Cust_id = P.Cust_Id
)
SELECT C.Cust_id, C.Cust_Name, PL.LoanName [PersonalLoan], PL.Amt, HL.LoanName [HomeLoan], HL.Amt, C.ProductName, C.Cost
FROM
CusPrd C
LEFT JOIN Loan PL ON PL.Cust_Id = C.Cust_id AND PL.LoanName ='PersonalLoan' AND C.RN = PL.RN
LEFT JOIN Loan HL ON HL.Cust_Id = C.Cust_id AND HL.LoanName ='HomeLoan' AND PL.RN = HL.RN AND C.RN = PL.RN
Result:
Cust_id Cust_Name PersonalLoan Amt HomeLoan Amt ProductName Cost
---------- -------------------- -------------------- ---------- -------------------- ---------- -------------------- -----------
101 John PersonalLoan 2L HomeLoan 10L Product1 1000
101 John PersonalLoan 3L NULL NULL Product1 2000
101 John NULL NULL NULL NULL Product1 3000

Answer 2

select * from
(select c.Cust_id,Cust_Name,ld.LoanName as Loan,Amt,ProductName,Cost
from Customer c left join Product p on p.Cust_id=c.Cust_id
left join Loan_Details ld on ld.Cust_id = c.Cust_id) as MTable
PIVOT
(
SUM(Amt) for Loan in ([HomeLoan],[PersonalLoan])
) as PTable
Use this it will give you what you want the result is something like this
Cust_id Cust_Name ProductName Cost HomeLoan PersonalLoan
----------- -------------------- -------------------- ----------- ----------- ------------
101 John Product1 1000 10 5
101 John Product12 2000 10 5
101 John Product2 3000 10 5
102 Peter NULL NULL NULL NULL