What will be query for below out put?

Question

Request Table 
Request ID
Request Name
R1
RQ1
R2
RQ2
Part Table
PartNumber
RequestID
Amount
P1
R1
200
P2
R1
300
P1
R2
500
P2
R2
400
OutPut Table
Request ID
PartNumber
Amount
R1
500
R1
P1
200
R1
P2
300
R2
900
R2
P1
500
R2
P2
400
Thanks and Regards, Vinayak Panchal

Answer 1

Try the below:
create Table Request (Request_ID varchar(100),Request_Name Varchar(100))
Insert into Request Values
('R1','RQ1'),
('R2','RQ2')
Create Table Part(PartNumber Varchar(10),RequestID varchar(10),Amount int)
Insert into Part Values
('P1','R1',200),
('P2','R1',300),
('P1','R2',500),
('P2','R2',400)
Select * From
SELECT Request_ID,B.PartNumber,
SUM (Amount) AS [Amt]
FROM Request A
Inner Join Part B on A.Request_ID = B.RequestID
GROUP BY ROLLUP(Request_ID,PartNumber)
)A
Where Request_ID Is not null
Order by Request_ID asc,PartNumber asc
Drop table Request,Part