UPPERCASE

UPPERCASE returns a character string with all characters converted to their uppercase equivalent.

x: An expression. If necessary, x is converted to character.
c: An expression that specifies the code page that will be uppercased.

UPPERCASE(x) is equivalent to TRANSLATE(x, 'A...Z', 'a...z') and UPPERCASE(x, c ) is equivalent to TRANSLATE(x, upperc, lowerc). The values of upperc and lowerc are determined by the value of the code page c. Specifying UPPERCASE(x, c) will not only translate alphabetic characters 'a...z' to 'A...Z', but also translate characters such as lowercase ä-umlaut('c0'x) to uppercase Ä-umlaut('4a'x).

For example, if the Lower_01141 was declared as:

dcl lower_01141 char
 value( (
              '8182838485868788'8991929394959697'x
           || '9899A2A3A4A5A6A7A8A9424445464748'x
           || '4951525354555657'586A708C8D8E9CC0'x
           || 'CBCDCECFD0DBDDDE'x
        ) );

and the Upper_01141 was declared as:

dcl upper_01141 char
  value( (
              'C1C2C3C4C5C6C7C8C9D1D2D3D4D5D6D7'x
           || 'D8D9E2E3E4E5E6E7E8E9626465666768'x
           || '6971727374757677'78E080ACADAE9E4A'x
           || 'EBEDEEEF5AFBFDFE'x
        ) );

then UPPERCASE(x, 1141 ) would be the same as TRANSLATE( x, Upper_01141, Lower_01141 ).

The appendix lists the values of upperc and lowerc for the supported values of c. For details, see Limits.