Learn how to use the SQL COALESCE() function to handle NULL values in queries and calculations. See syntax, examples, short-circuit evaluation, and comparison with CASE expression. This tip explores how to handle NULL values in SQL Server using the COALESCE() function using various queries and reviewing the results. The MySQL COALESCE () function returns the first non-null value in a list of expressions. COALESCE function in MySQL The COALESCE function in MySQL is used to get the first non-null value from a list of expressions. If all the values in the list are evaluated to NULL, then the COALESCE () function returns NULL. The COALESCE () function accepts one parameter, which is the list, which can contain various values. Syntax The MySQL COALESCE function syntax is: COALESCE (value_1, value_2 ... Learn how to use the COALESCE () function in SQL Server to return the first non-null value in a list. See syntax, parameters, examples and technical details.
