statstics
db.authors.aggregate([{$group:{ _id: "$userid", "sbd_payout" : { $sum : "$opBody.sbd_payout" } }}, {$sort : { "sbd_payout":-1}}]) GBG { "_id" : "sept", "sbd_payout" : 57813.76399999999 } { "_id" : "golosmedia", "sbd_payout" : 52796.43900000002 } { "_id" : "econmag", "sbd_payout" : 43453.02 } { "_id" : "golos.loto", "sbd_payout" : 39386.90000000001 } { "_id" : "vox-populi", "sbd_payout" : 21936.939000000002 } { "_id" : "arcange", "sbd_payout" : 21810.769999999993 } { "_id" : "blockchained", "sbd_payout" : 20989.403999999995 } { "_id" : "dmilash", "sbd_payout" : 17810.826000000012 } { "_id" :…