SQL> -- Rpad: makes a string a certain length by adding (padding) a specified set of characters to the right .
SQL>
SQL> -- RPAD(string, length_to_make_string, what_to_add_to_right_of_string)
SQL>
SQL> SELECT RPAD('Letters', 20, '.') FROM dual;
RPAD('LETTERS',20,'.
--------------------
Letters.............