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: Basics of SQL Commands
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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