Returns a character expression with lowercase character data converted to uppercase.
UPPER (character_expression )
Is an expression of character data. character_expression can be a constant, variable, or column of either character or binary data.
character_expression must be of a data type that is implicitly convertible to varchar. Otherwise, use CAST to explicitly convert character_expression.
varchar or nvarchar
The following example uses the UPPER and RTRIM functions to return the last name of people in the Contact table so that is in uppercase, trimmed, and concatenated with the first name.
USE AdventureWorks; GO SELECT UPPER(RTRIM(LastName)) + ', ' + FirstName AS Name FROM Person.Contact ORDER BY LastName; GO