Created
August 27, 2018 09:49
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| db.usersProject.aggregate([ | |
| { | |
| "$group": { | |
| _id: {projectId: "$projectId"}, | |
| dups: { $addToSet: "$_id" } , | |
| count: { $sum : 1 } | |
| } | |
| }, | |
| { | |
| "$match": { | |
| count: { "$gt": 1 } | |
| } | |
| } | |
| ]).forEach(function(doc) { | |
| doc.dups.shift(); | |
| db.usersProject.remove({ | |
| _id: {$in: doc.dups} | |
| }); | |
| }) |
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