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Converts all characters in a string to uppercase.
UPPER( string-expression )
string-expression The string to be converted to uppercase.
CHAR, VARCHAR, LONG VARCHAR, NCHAR, NVARCHAR, or LONG NVARCHAR corresponding to the data type of the argument.
This function is identical to the UCASE function.
SQL/2008 The UPPER function is a core feature of the SQL/2008 standard.
The following statement returns the value CHOCOLATE.
SELECT UPPER( 'ChocoLate' );