SQL — DDL & constraints

1 Select all employees Easy 2 Select specific columns Easy 3 CREATE TABLE #1 Hard 4 CREATE TABLE #2 Medium 5 CREATE TABLE #3 Medium 6 CREATE TABLE #4 Hard 7 CREATE TABLE #5 Medium 8 CREATE TABLE #6 Medium 9 CREATE TABLE #7 Hard 10 CREATE TABLE #8 Medium 11 CREATE TABLE #9 Medium 12 CREATE TABLE #10 Hard 13 CREATE TABLE #11 Medium 14 CREATE TABLE #12 Medium 15 CREATE TABLE #13 Hard 16 CREATE TABLE #14 Medium 17 CREATE TABLE #15 Medium 18 CREATE TABLE #16 Hard 19 CREATE TABLE #17 Medium 20 CREATE TABLE #18 Medium 21 CREATE TABLE #19 Hard 22 CREATE TABLE #20 Medium 23 CREATE TABLE #21 Medium 24 CREATE TABLE #22 Hard 25 CREATE TABLE #23 Medium 26 CREATE TABLE #24 Medium 27 CREATE TABLE #25 Hard 28 CREATE TABLE #26 Medium 29 CREATE TABLE #27 Medium 30 CREATE TABLE #28 Hard 31 CREATE TABLE #29 Medium 32 CREATE TABLE #30 Medium 33 CREATE TABLE #31 Hard 34 CREATE TABLE #32 Medium 35 CREATE TABLE #33 Medium 36 CREATE TABLE #34 Hard 37 CREATE TABLE #35 Medium 38 CREATE TABLE #36 Medium 39 CREATE TABLE #37 Hard 40 CREATE TABLE #38 Medium 41 CREATE TABLE #39 Medium 42 CREATE TABLE #40 Hard 43 CREATE TABLE #41 Medium 44 CREATE TABLE #42 Medium 45 CREATE TABLE #43 Hard 46 CREATE TABLE #44 Medium 47 CREATE TABLE #45 Medium 48 CREATE TABLE #46 Hard 49 CREATE TABLE #47 Medium 50 CREATE TABLE #48 Medium