Nov 18, 2025 · NULLIF returns the first expression if the two expressions are not equal. If the expressions are equal, NULLIF returns a null value of the type of the first expression.

Definition and Usage The NULLIF () function returns NULL if two expressions are equal, otherwise it returns the first expression. Syntax NULLIF (expr1, expr2)

Jul 23, 2025 · The NULLIF () function simplifies SQL queries by reducing the need for complex conditional logic using CASE statements. It is commonly used to prevent errors such as division by …

In this tutorial, you will learn how to use the SQL NULLIF function to compare two values and return NULL if they are equal.

This tutorial introduces you to the SQL Server NULLIF expression and gives you some practical examples of using the NULLIF expression.

Apr 7, 2025 · If you want to check data and return a NULL value, you can use the NULLIF function. If you want to check for a NULL value and return a different value, use the ISNULL function.

The NULLIF function in SQL is a concise yet powerful tool for handling specific data scenarios, allowing you to convert a value to NULL when it matches a specified condition.

In SQL Server (Transact-SQL), the NULLIF function compares expression1 and expression2. If expression1 and expression2 are equal, the NULLIF function returns NULL.

In summary, the SQL NULLIF function is a very useful tool for working with data that may contain null or empty values. It allows you to easily compare two expressions and return NULL if they are equal, …

Jul 11, 2025 · NULLIF is used to return NULL when two expressions are equal, which is especially useful in avoiding divide-by-zero errors or simplifying conditional logic. Understanding when and how …