mongodb query Col1

intercom TFP new signup by dateRange

var collName= 20180301 
// 2018-03-01 00:00:00 to 
// 2018-03-01 23:59:59
var dateRange= {"$gte":1519862400,"$lte":1519948799}
var queryDoc; queryDoc.signed_up_at = dateRange

db.getCollection(`${collName}`).aggregate([ 
  { "$match":  queryDoc  }
 ,{ "$group":{ "_id" : null,
//                 "Plan Names": { "$addToSet": { "api_plan_name" : "$custom_attributes.api_plan_name"}},
                "Total no activity" : {"$sum":1}
   }}
])