In this article, you'll find the answers to the five most-asked questions about SQL COALESCE function in SQL Server. Explore useful examples.

The definition of COALESCE is an expression that returns the first non-null value from a list of values. The COALESCE syntax is:

COALESCE ( expression [ ,…n ] )

(4) SQL COALESCE is Converted to CASE. ISNULL Stays ISNULL

COALESCE returns the data type of the value with the highest precedence.