Definition and Usage The ISNULL () function returns a specified value if the expression is NULL. If the expression is NOT NULL, this function returns the expression. Syntax ISNULL (expression, value)

Nov 18, 2025 · The following example uses ISNULL to replace a NULL value for Color, with the string None.

In this tutorial, you will learn how to use the SQL Server ISNULL () function to replace NULL with a specified value.

Mar 18, 2021 · Learn about the SQL Server ISNULL function and the many ways it can be used with TSQL statements.

The ISNULL() function returns the input expression value if it is not a NULL. In the following example, the given expression 'SQL Server' is not a null value and hence ISNULL returns the expression as it …

Apr 7, 2025 · When we query the Comic table, we don’t want to see NULL values. Maybe we don’t want to see it in the application. Maybe NULL values will break something in an application. Whatever the …

In SQL Server, the ISNULL function is used to replace NULL values with a specified replacement value. It is a convenient way to handle NULLs in SQL queries and expressions.

This SQL Server tutorial explains how to use the ISNULL function in SQL Server (Transact-SQL) with syntax and examples. In SQL Server (Transact-SQL), the ISNULL function lets you return an …

The SQL Server ISNULL function validates whether the expression is NULL or not. If it is NULL, then isnull replace them with other expression.

Jul 23, 2025 · The ISNULL() function in SQL Server is a powerful tool for handling NULL values in our database queries. It allows us to replace NULL values with a specified replacement value, ensuring …