Calculate Running Total, Total of a Column and Row

How to do Running Total: An Overview

You are often required to show information on each transaction and keep a Running Total and Final Total like GridView in Asp.Net. In this SQL Server, I am going to explain, how you can achieve this using SQL Query simply and easily.

Read More: SQL Server Interview Questions and Answers

Suppose you have the below CustomerOrders table and have the data as shown below:

CREATE TABLE CustomerOrders
(
 OrderID int identity,
 Amount Decimal(8,2),
 OrderDate SmallDatetime default getdate()
 )

Go
 
 INSERT INTO CustomerOrders(Amount) Values(120.12)
 INSERT INTO CustomerOrders(Amount) Values(20.12)
 INSERT INTO CustomerOrders(Amount) Values(10.12)
 INSERT INTO CustomerOrders(Amount) Values(30.12)
 INSERT INTO CustomerOrders(Amount) Values(40)

GO
 
 SELECT * FROM CustomerOrders

Output

Read More - DBMS Interview Questions For Freshers

Read More - DBMS Interview Questions For Freshers

Calculating Running Total

Let's see how to calculate the running total using SQL Query as given below:

 select OrderID, OrderDate, CO.Amount
 ,(select sum(Amount) from CustomerOrders 
 where OrderID <= CO.OrderID)
 'Running Total'
from CustomerOrders CO

Output

Calculating Final Total

Let's see how to calculate the final total using ROLLUP within SQL Query as given below:

SELECT OrderID, SUM(Amount) AS Amount
FROM CustomerOrders
GROUP BY OrderID WITH ROLLUP

Output

Calculating the Total of All Numeric Columns in a Row

Let's see how to calculate the total of all numeric fields within a row using SQL Query as given below:

SELECT OrderID, Amount, SUM(OrderID+Amount) AS RowNumericColSum
FROM CustomerOrders
GROUP BY OrderID,Amount
ORDER BY OrderID

Output

What do you think?

I hope you will enjoy the tips while writing a query in SQL Server. If you want to gain a practical understanding, you can enroll in our SQL Server Course.

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