Swap the Values of Two Columns in SQL Server

Swap the Values of Two Columns in SQL Server

18 Mar 2024
Intermediate
6.51K Views
3 min read

Swapping Values of Columns in SQL Server: An Overview

Suppose you want to swap the values of two columns of a table in SQL Server, how could you achieve this tricky task? It is simple and so funny.

Read More: SQL Server Interview Questions and Answers

How to Swap Values of Two Columns of a Table in SQL Server?

Suppose you have a Customer table in the database with the following data and you want to interchange the values of columns, Name and Address then how do you do it?

Read More: Basics of SQL Commands


 SELECT * FROM CUSTOMER 

Output

Don't worry, to do this task, you need to just write a simple update query for the Customer table like as:


 UPDATE Customer SET Name=Address , Address=Name 

Now after query execution, you will find that the values of columns, Name, and Address have been interchanged, that's so cool.


SELECT * FROM CUSTOMER
 

Output

Note

  1. The data type of both columns should be the same and also the length should be enough to hold the swapped column data the data will be truncated.

What do you think?

I hope you will enjoy this trick while having fun with SQL Server. I would like to have feedback from my blog readers. If you want to gain a practical understanding, you can enroll in our SQL Server Course.

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About Author
Shailendra Chauhan (Microsoft MVP, Founder & CEO at Scholarhat by DotNetTricks)

Shailendra Chauhan is the Founder and CEO at ScholarHat by DotNetTricks which is a brand when it comes to e-Learning. He provides training and consultation over an array of technologies like Cloud, .NET, Angular, React, Node, Microservices, Containers and Mobile Apps development. He has been awarded Microsoft MVP 8th time in a row (2016-2023). He has changed many lives with his writings and unique training programs. He has a number of most sought-after books to his name which has helped job aspirants in cracking tough interviews with ease.
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