Created
November 23, 2015 16:49
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Aggregate Zooniverse classifications in MongoDB by date
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| db.radio_classifications.aggregate( | |
| { $group : { | |
| _id: { | |
| year : { $year : "$created_at" }, | |
| month : { $month : "$created_at" }, | |
| day : { $dayOfMonth : "$created_at" }, | |
| }, | |
| count: { $sum: 1 } | |
| }} | |
| ) |
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