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.

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 …

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 …

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 …

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.

Jul 11, 2025 · In SQL Server, ISNULL and NULLIF are two essential functions used to handle NULL values, but they serve very different purposes. ISNULL is used to replace NULL with a specified …

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

Dec 11, 2023 · The ISNULL () function in SQL Server is a powerful tool for handling NULL values. It can be used in various scenarios, such as converting NULL values in SELECT queries, inserting default …