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select last_name, department_id from employees where department_id = 50 or department_id = 60
select first_name, last_name, salary from employees where salary >= 10000 and salary < 15000 order by salary desc select first_name, last_name, salary from employees where salary in('10000', '11000', '13000' ) order by salary desc select first_name, last_name, salary from employees where salary not between 10000 and 14000 and salary not in (10000, 14000) order by salary desc