dieudo / mongodb

607week10assignment

Dieudonne Ouedraogo

C:\mongodb\bin>mongo MongoDB shell version: 2.4.12 connecting to: test

db test show dbs WeekMongo 0.203125GB employment 0.203125GB local 0.078125GB unitedstates 0.203125GB use WeekMongo switched to db WeekMongo var mapf = function(){ emit(this.state, this.pop) } var reducef = function(keySt, valPop){ return Array.sum(valPop); } db.zips.mapReduce( mapf, reducef, { out: "PopulationInState" } ) { "result" : "PopulationInState", "timeMillis" : 5912, "counts" : { "input" : 29353, "emit" : 29353, "reduce" : 346, "output" : 51 }, "ok" : 1, } db.PopulationInState.find() { "_id" : "AK", "value" : 544698 } { "_id" : "AL", "value" : 4040587 } { "_id" : "AR", "value" : 2350725 } { "_id" : "AZ", "value" : 3665228 } { "_id" : "CA", "value" : 29754890 } { "_id" : "CO", "value" : 3293755 } { "_id" : "CT", "value" : 3287116 } { "_id" : "DC", "value" : 606900 } { "_id" : "DE", "value" : 666168 } { "_id" : "FL", "value" : 12686644 } { "_id" : "GA", "value" : 6478216 } { "_id" : "HI", "value" : 1108229 } { "_id" : "IA", "value" : 2776420 } { "_id" : "ID", "value" : 1006749 } { "_id" : "IL", "value" : 11427576 } { "_id" : "IN", "value" : 5544136 } { "_id" : "KS", "value" : 2475285 } { "_id" : "KY", "value" : 3675484 } { "_id" : "LA", "value" : 4217595 } { "_id" : "MA", "value" : 6016425 } Type "it" for more it { "_id" : "MD", "value" : 4781379 } { "_id" : "ME", "value" : 1226648 } { "_id" : "MI", "value" : 9295297 } { "_id" : "MN", "value" : 4372982 } { "_id" : "MO", "value" : 5110648 } { "_id" : "MS", "value" : 2573216 } { "_id" : "MT", "value" : 798948 } { "_id" : "NC", "value" : 6628637 } { "_id" : "ND", "value" : 638272 } { "_id" : "NE", "value" : 1578139 } { "_id" : "NH", "value" : 1109252 } { "_id" : "NJ", "value" : 7730188 } { "_id" : "NM", "value" : 1515069 } { "_id" : "NV", "value" : 1201833 } { "_id" : "NY", "value" : 17990402 } { "_id" : "OH", "value" : 10846517 } { "_id" : "OK", "value" : 3145585 } { "_id" : "OR", "value" : 2842321 } { "_id" : "PA", "value" : 11881643 } { "_id" : "RI", "value" : 1003218 } Type "it" for more it { "_id" : "SC", "value" : 3486703 } { "_id" : "SD", "value" : 695397 } { "_id" : "TN", "value" : 4876457 } { "_id" : "TX", "value" : 16984601 } { "_id" : "UT", "value" : 1722850 } { "_id" : "VA", "value" : 6181479 } { "_id" : "VT", "value" : 562758 } { "_id" : "WA", "value" : 4866692 } { "_id" : "WI", "value" : 4891769 } { "_id" : "WV", "value" : 1793146 } { "_id" : "WY", "value" : 453528 } it no cursor