SQL — JOINs

1 Inner join employees and departments Medium 2 Left join to include all employees Medium 3 Join exercise #1 Hard 4 Join exercise #2 Medium 5 Join exercise #3 Medium 6 Join exercise #4 Hard 7 Join exercise #5 Medium 8 Join exercise #6 Medium 9 Join exercise #7 Hard 10 Join exercise #8 Medium 11 Join exercise #9 Medium 12 Join exercise #10 Hard 13 Join exercise #11 Medium 14 Join exercise #12 Medium 15 Join exercise #13 Hard 16 Join exercise #14 Medium 17 Join exercise #15 Medium 18 Join exercise #16 Hard 19 Join exercise #17 Medium 20 Join exercise #18 Medium 21 Join exercise #19 Hard 22 Join exercise #20 Medium 23 Join exercise #21 Medium 24 Join exercise #22 Hard 25 Join exercise #23 Medium 26 Join exercise #24 Medium 27 Join exercise #25 Hard 28 Join exercise #26 Medium 29 Join exercise #27 Medium 30 Join exercise #28 Hard 31 Join exercise #29 Medium 32 Join exercise #30 Medium