COALESCE « Data Convert Functions « SQL Server / T-SQL Tutorial

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SQL Server / T-SQL Tutorial » Data Convert Functions » COALESCE

13.2.COALESCE
	13.2.1.	COALESCE is equivalent to a CASE expression that returns the first NOT NULL expression in a list of expressions.
	13.2.2.	Returning the First Non NULL Value in a List of Expressions
	13.2.3.	COALESCE() saves quite a lot of IF or CASE decision logic.
	13.2.4.	A SELECT statement that uses the COALESCE function
	13.2.5.	A SELECT statement that substitutes a different data type

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