Created
February 21, 2017 19:55
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Get all keys for a MongoDB collection.
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| mr = db.runCommand({ | |
| "mapreduce" : "extracao_unimed", | |
| "map" : function() { | |
| for (var key in this) { emit(key, null); } | |
| }, | |
| "reduce" : function(key, stuff) { return null; }, | |
| "out": "extracao_unimed" + "_keys" | |
| }) | |
| db[mr.result].distinct("_id") |
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