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This topic created in 3408 days ago, the information mentioned may be changed or developed.
{ "_id" : "aBAj43ZZKFLyRucx33", "name" : "李三", "createAt" : ISODate("2016-12-16T10:31:37.501Z") }
如上的记录，如何返回根据 createAt 字段返回今天，昨天，本周，上周，本月，上月用户注册的聚合吗？
参考： https://docs.mongodb.com/manual/reference/operator/aggregation/
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1
gdsagdada Dec 27, 2016
出门左转 stackoverflow ，问前先搜
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2
a342191555 Dec 27, 2016
project:
"today" : {"$push" : ...} "yesterday" : {"$push" : ...} ....... |
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