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db.collection.aggregate([{"$facet":{"metricsTotal":[{$group:{_id:null,sumOrderPrice:{$sum:"$orderPrice"},avgOrderPrice:{$avg:"$orderPrice"},sumResponseTime:{$sum:"$responseTime"},avgResponseTime:{$avg:"$responseTime"}}}],"metricsByDay":[{$group:{_id:{$dateFromParts:{"year":{"$year":{$dateFromString:{"dateString":"$createdAt",}}},"month":{"$month":{$dateFromString:{"dateString":"$createdAt",}}},"day":{"$dayOfMonth":{$dateFromString:{"dateString":"$createdAt",}},}}},sumOrderPrice:{$sum:"$orderPrice"},avgOrderPrice:{$avg:"$orderPrice"},sumResponseTime:{$sum:"$responseTime"},avgResponseTime:{$avg:"$responseTime"}}}]}}])