-- https://docs.oracle.com/en/database/oracle/oracle-database/23/sqlrf/Comments.html
SELECT /*+ USE_BAND(e1 e2) */
  e1.last_name
  || ' has salary between 100 less and 100 more than '
  || e2.last_name AS "SALARY COMPARISON"
FROM employees e1, employees e2
WHERE e1.salary BETWEEN e2.salary - 100 AND e2.salary + 100;