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anapaulagomes/gist:138958fceb012c9616cb

Last active December 19, 2016 16:59
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Group array attributes, sum then and order from the biggest to the smallest - MongoDB
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gistfile1.txt
var pipeline = [{$unwind: '$comments'}, {$group: {_id: '$comments.author', numberOf: {$sum: 1}}}, {$sort: {numberOf:-1}}]
db.posts.aggregate(pipeline)
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