1. cross join 2. natural join 3. equi join 4. theta join 5. inner join 6. left outer join 7. right outer join 8. full outer join 9. left

1. cross join 2. natural join 3. equi join 4. theta join 5. inner join 6. left outer join 7. right outer join 8. full outer join 9. left semi join 10. right semi join 11. left anti semi join 12. right anti semi join 13. ???