Created
December 3, 2012 11:20
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Get top author from array in mongo
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| use blog | |
| db.posts.aggregate([ | |
| { $unwind: "$comments" } | |
| , { $group: { | |
| _id: "$comments.author" | |
| , total: {$sum: 1} | |
| } | |
| } | |
| , { $sort: { total: -1 } } | |
| , { $limit: 1} | |
| ]); |
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