SQL Server — Aggregates & GROUP BY

51 T-SQL AVG salary by department #50 Medium 52 T-SQL AVG salary by department #51 Easy 53 T-SQL AVG salary by department #52 Medium 54 T-SQL AVG salary by department #53 Hard 55 T-SQL AVG salary by department #54 Medium 56 T-SQL AVG salary by department #55 Easy 57 T-SQL AVG salary by department #56 Medium 58 T-SQL AVG salary by department #57 Hard 59 T-SQL AVG salary by department #58 Medium 60 T-SQL AVG salary by department #59 Easy 61 T-SQL AVG salary by department #60 Medium 62 T-SQL AVG salary by department #61 Hard 63 T-SQL AVG salary by department #62 Medium 64 T-SQL AVG salary by department #63 Easy 65 T-SQL AVG salary by department #64 Medium 66 T-SQL AVG salary by department #65 Hard 67 T-SQL AVG salary by department #66 Medium 68 T-SQL AVG salary by department #67 Easy 69 T-SQL AVG salary by department #68 Medium 70 T-SQL AVG salary by department #69 Hard 71 T-SQL AVG salary by department #70 Medium 72 T-SQL AVG salary by department #71 Easy 73 T-SQL AVG salary by department #72 Medium 74 T-SQL AVG salary by department #73 Hard 75 T-SQL AVG salary by department #74 Medium 76 T-SQL AVG salary by department #75 Easy 77 T-SQL AVG salary by department #76 Medium 78 T-SQL AVG salary by department #77 Hard 79 T-SQL AVG salary by department #78 Medium 80 T-SQL AVG salary by department #79 Easy 81 T-SQL AVG salary by department #80 Medium 82 T-SQL AVG salary by department #81 Hard 83 T-SQL AVG salary by department #82 Medium 84 T-SQL AVG salary by department #83 Easy 85 T-SQL AVG salary by department #84 Medium 86 T-SQL AVG salary by department #85 Hard 87 T-SQL AVG salary by department #86 Medium 88 T-SQL AVG salary by department #87 Easy 89 T-SQL AVG salary by department #88 Medium 90 T-SQL AVG salary by department #89 Hard 91 T-SQL AVG salary by department #90 Medium 92 T-SQL AVG salary by department #91 Easy 93 T-SQL AVG salary by department #92 Medium 94 T-SQL AVG salary by department #93 Hard 95 T-SQL AVG salary by department #94 Medium 96 T-SQL AVG salary by department #95 Easy 97 T-SQL AVG salary by department #96 Medium 98 T-SQL AVG salary by department #97 Hard 99 T-SQL AVG salary by department #98 Medium 100 T-SQL AVG salary by department #99 Easy