MongoDB — Aggregation

1 Average salary by department Medium 2 MongoDB aggregation #1 Medium 3 MongoDB aggregation #2 Medium 4 MongoDB aggregation #3 Medium 5 MongoDB aggregation #4 Medium 6 MongoDB aggregation #5 Medium 7 MongoDB aggregation #6 Medium 8 MongoDB aggregation #7 Medium 9 MongoDB aggregation #8 Medium 10 MongoDB aggregation #9 Medium 11 MongoDB aggregation #10 Medium 12 MongoDB aggregation #11 Medium 13 MongoDB aggregation #12 Medium 14 MongoDB aggregation #13 Medium 15 MongoDB aggregation #14 Medium 16 MongoDB aggregation #15 Medium 17 MongoDB aggregation #16 Medium 18 MongoDB aggregation #17 Medium 19 MongoDB aggregation #18 Medium 20 MongoDB aggregation #19 Medium 21 MongoDB aggregation #20 Medium 22 MongoDB aggregation #21 Medium 23 MongoDB aggregation #22 Medium 24 MongoDB aggregation #23 Medium 25 MongoDB aggregation #24 Medium 26 MongoDB aggregation #25 Medium 27 MongoDB aggregation #26 Medium 28 MongoDB aggregation #27 Medium 29 MongoDB aggregation #28 Medium 30 MongoDB aggregation #29 Medium 31 MongoDB aggregation #30 Medium