SQL ISNULL (), NVL (), IFNULL () and COALESCE () Functions
SQL Server The SQL Server ISNULL() function lets you return an alternative value when an expression is NULL:
SQL IFNULL () Explained - Database.Guide
May 14, 2022 · In particular, MySQL, MariaDB, and SQLite each have an IFNULL() function that replaces any null values with another value. Other RDBMSs, such as SQL Server, Oracle, and …
MySQL IFNULL - Practical Examples of IFNULL Function
This tutorial shows you how to use MySQL IFNULL function to handle NULL values more efficiently.
ISNULL (Transact-SQL) - SQL Server | Microsoft Learn
Nov 18, 2025 · If a literal NULL is provided as check_expression, ISNULL returns the data type of the replacement_value. If a literal NULL is provided as check_expression and no replacement_value is …
How to use the SQL IFNULL () function - IONOS
Feb 7, 2025 · In the Structured Query Language, the SQL COALESCE () function is an important tool. However, to return a specific value when an expression is empty or NULL, you can use SQL …
SQL IFNULL () and COALESCE () Functions: Handling NULL Values
Aug 28, 2024 · Discover how to handle NULL values in SQL using the IFNULL () and COALESCE () functions. Learn their differences and practical applications in this comprehensive guide.
SQL IFNULL Function | Replace NULL Values in SQL Queries
Oct 11, 2024 · Discover how to use SQL IFNULL to replace NULL values with a specified value. Explore syntax and examples for handling NULL in your SQL queries.
SQL Reference - IFNULL
The IFNULL function in SQLite checks the first expression if it is NULL. If it is NULL, the function returns the second expression. In this example, the IFNULL function checks if the ‘name’ field of the …
MySQL IFNULL Function [With Practical Application Examples]
Apr 1, 2025 · Q #1) What is IFNULL in MySQL? Answer: IFNULL is a pre-defined function supported by MySQL, that helps to evaluate an expression or literal strings and returns the default specified value …
MySQL IFNULL () Function - W3Schools
Definition and Usage The IFNULL () function returns a specified value if the expression is NULL. If the expression is NOT NULL, this function returns the expression. Syntax IFNULL (expression, alt_value)