Sebastian Nuck nucknorris
nucknorris
/ gist:6352442
Created
August 27, 2013 11:34
— forked from eranation/gist:3241616
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| //equivalent of "select count (distinct fieldName) from someTable" | |
| db.someCollection.aggregate([{ $group: { _id: "$fieldName"} },{ $group: { _id: 1, count: { $sum: 1 } } } ]) |