我在Mongo中有一个集合,那里有类似这样的记录:
{ "id": NumberLong(141242), "name": "John Doe", "language": "en" }
{ "id": NumberLong(3556332), "name": "Mark Zuckerberg", "language": "jp" }
{ "id": NumberLong(124), "name": "Abigail Fidler", "language": "cn" }
{ "id": NumberLong(325262351), "name": "Joe Parker", "language": "jp" }
{ "id": NumberLong(98798), "name": "John Bush", "language": "en" }
我想从该集合中选择所有独特的语言。
{ "language": "en" }
{ "language": "jp" }
{ "language": "cn" }
有什么办法可以在 Mongo 中实现吗?
最佳答案
关于mongodb - 如何在 Mongodb 中获取独特的属性?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/6757937/