查询聚类以及时间处理

SELECT COUNT(*), SUM(PKTS), SUM(BYTES) FROM mytable

SELECT srcad, srcpo, dstad, dstpo, pro, COUNT(*), SUM(PKTS), SUM(BYTES) FROM mytable WHERE scrpo=80 OR dstpo=80 GROUP BY srcad, scrpo, dstad, dstpo, pro

db.mytable.aggregate({$group:{_id:1, sump:{$sum:"$pkts"}, sumb:{$sum:"$bytes"} }})

db.mytable.aggregate([ 
   {$match:{$or:[{scrpo:80},{dstpo:80}]} },
   {$group:{_id :  {srcad:"$srcad",scrpo:"$scrpo",
                    dstad:"$dstad",dstpo:"$dstpo",pro:"$pro"},
            sump:{$sum:"$pkts"}, 
            sumb:{$sum:"$bytes"} 
    }}
]);

 根据不同时间分段 以及can’t convert from BSON type NumberDouble to Date错误

db.aggregData.aggregate([
  { 
    $project:{ 
        CrawledTweets: 1,
        newDate: { 
            year:{$year:"$Date"}, 
            month: {$month:"$Date"}, 
            day: {$dayOfMonth:"$Date"}, 
            hour: {$hour: "$Date"}, 
            min: {$minute: "$Date"}
        }   
    }   
  },
  { 
    $group: {
        _id: "$newDate",
        tweets: { $sum: "$CrawledTweets"}
    }   
  }
])

 参考http://smyl.es/how-to-use-mongodb-date-aggregation-operators-in-node-js-with-mongoose-dayofmonth-dayofyear-dayofweek-etc/