mongodb distinct

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{ "_id" : ObjectId("532be543edb9e06960e550b3"), "name" : "tom", "salary" : 98 }{ "_id" : ObjectId("532be54eedb9e06960e550b4"), "name" : "tom", "salary" : 96 }{ "_id" : ObjectId("532be559edb9e06960e550b5"), "name" : "jerry", "salary" : 86 }{ "_id" : ObjectId("532be55eedb9e06960e550b6"), "name" : "jerry", "salary" : 88 }db.salary.distinct("name");[ "tom", "jerry" ]

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