RTRIM function (ODBC compatible)
RTRIM ( char_expression [ , char_set ] )
The scalar function RTRIM removes all the trailing characters in char_expression, that are present in char_set and returns the resultant string. Thus, the last character in the result is guaranteed to be not in char_set. If the char_set argument is omitted, the function removes the leading and trailing blanks from char_expression.
SELECT RPAD ( RTRIM (addr, ' '), 30, '.')
FROM customer ;