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daimaou92/mongo_coll_keys.info

Created September 26, 2018 06:42
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mongo_coll_keys.info
var mr = db.runCommand({"mapreduce": "collName", "map": function(){ for(var key in this){ emit(key, null); } }, "reduce": function(key, stuff){ return null; }, "out": "collName"+ "_keys" })
db[mr.result].distinct("_id")
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