How to split Row into multiple column using T-SQL - sql-server

Question

There are three column,wherever D_ID=13,value_amount holds value for mode of payment and wherever D_ID=10,value_amount holds value for amount.
ID D_ID Value_amount
1 13 2
1 13 2
1 10 1500
1 10 1500
2 13 1
2 13 1
2 10 2000
2 10 2000
Now I have to add two more columns amount and mode_of_payment and result should come like below
ID amount mode_of_payment
1 1500 2
1 1500 2
2 2000 1
2 2000 1

Answer 1

This is too long for a comment.
Simply put, your data is severely flawed. For the example data you've given, you're "ok", because the rows have the same values to the same ID, but what about when they don't? Let's assume, for example, we have data that looks like this:
ID D_ID Value_amount
1 13 1 --1
1 13 2 --2
1 10 1500 --3
1 10 1000 --4
2 13 1 --5
2 13 2 --6
2 10 2000 --7
2 10 3000 --8
I've added a "row number" next to data, for demonstration purposes only.
Here, what row is row "1" related to? Row "3" or row "4"? How do you know? There's no always ascending value in your data, so row "3" could just as easily be row "4". In fact, if we were to order the data using ID ASC, D_ID DESC, Value_amount ASC then rows 3 and 4 would "swap" in order. This could mean that when you attempt a solution, the order in wrong.
Tables aren't stored in any particular order, that are unordered. What determines the order the data is presented in is the ORDER BY clause, and if you don't have a value to define that "order", then that "order" is lost as soon as you INSERT it.
If, however, we add a always ascending value into your data, you can achieve this.
CREATE TABLE dbo.YourTable (UID int IDENTITY,
ID int,
DID int,
Value_amount int);
GO
INSERT INTO dbo.YourTable (ID, DID, Value_amount)
VALUES (1,13,1 ),
(1,13,2 ),
(1,10,1500),
(1,10,1000),
(2,13,1 ),
(2,13,2 ),
(2,10,2000),
(2,10,3000);
GO
WITH RNs AS(
SELECT ID,
DID,
Value_amount,
ROW_NUMBER() OVER (PARTITION BY ID, DID ORDER BY UID ASC) AS RN
FROM dbo.YourTable)
SELECT ID,
MAX(CASE DID WHEN 13 THEN Value_Amount END) AS Amount,
MAX(CASE DID WHEN 10 THEN Value_Amount END) AS PaymentMode
FROM RNs
GROUP BY RN,
ID;
GO
DROP TABLE dbo.YourTable;
Of course, you need to fix your design to implement this, but you need to do that anyway.