NULLIF function in SQL Server

Published on August 26, 2016 by abundantcode

Filed under SQL Server

Last modified August 26, 2016

Print this page

rate 1 star rate 2 star rate 3 star rate 4 star rate 5 star
Your rating: none, Average: 0 (0 votes)

This article have been viewed 4235 times

The NULLIF function in SQL Server returns a NULL value if the two input expressions return the same value else the first value (expression) is returned.

For example , assume that you want to compare two columns (Address1 and Address2) in the Address table and want to return NULL if both are same to indicate there is NO change and if the addresses are different to use the first one , we could use the NULLIF in the query.

Use AdventureWorks2014
SELECT  AddressId,AddressLine1,AddressLine2,
  FROM [AdventureWorks2014].[Person].[Address]
  ORDER BY AddressID 


Leave a Comment


You might be Interested in these Posts

How to Perform Inner Join using LINQ in C# ?

Are you looking for the syntax on how to perform inner join using LINQ in C# ? . Below is a sample c...

How to decode a base64 string in C#?

Here's a sample code snippet demonstrating how you can easily decode a base64 encoded string in C#. ...

How to disable editing of items in a combo box in c#?

When working in Win forms using C# and especially when you use the combo box , you would have notice...