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Node.js MongoDB HW#5.1 - Use aggregation framework to calculate the author with the greatest number of comments.
Note: To run this in Terminal, type in... mongo < [file name of this .js file]. This should run the command of the .js file you created with the mongo shell and return back results in Terminal.
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| use blog | |
| db.posts.aggregate([{ | |
| $unwind: "$comments" | |
| }, { | |
| $group: { | |
| _id: "$comments.author", | |
| postcount: { | |
| $sum: 1 | |
| } | |
| } | |
| }, { | |
| $sort: { | |
| postcount: 1 | |
| } | |
| }]) |
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