Created
December 6, 2016 17:19
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aggregate mongodb
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| db.g5t.aggregate([{$project: { msd:true, actKey:true }},{$group:{_id: {msd:"$msd", actKey: "$actKey"}, total: {$sum : 1}}},{$group:{_id: "$_id.msd", ackKeys: {$push: {actKey: "$_id.actKey", quantity: "$total"}}}},{$out: "g5tend2"}], {allowDiskUse:true}); |
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