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mongodb

时间:2017-03-08 01:07:46      阅读:219      评论:0      收藏:0      [点我收藏+]

标签:data   article   bsp   3.0   bpa   count   gre   .exe   pipeline   

http://www.tuicool.com/articles/2iqUZj

http://www.runoob.com/mongodb/mongodb-aggregate.html

http://www.cnblogs.com/AlvinLee/p/6085442.html

https://docs.mongodb.com/manual/reference/method/db.collection.distinct/

mongod.exe --dbpath C:\Environ\mongodb-3.0.7\data\db

http://www.cnblogs.com/ontheroad_lee/p/3756247.html

https://segmentfault.com/a/1190000004263347

 

          var group = new BsonDocument 
                { 
                    { "$group", 
                        new BsonDocument 
                            { 
                                { "_id", new BsonDocument { {"Age","$Age"} ,{"Sex","$Sex" } }},              
                                {"Count", new BsonDocument{ { "$sum", 1 } } }   
                            } 
                    } 
                };

            var pipeline = new[] { group };

            var result = collection.Aggregate(pipeline);

 

mongodb

标签:data   article   bsp   3.0   bpa   count   gre   .exe   pipeline   

原文地址:http://www.cnblogs.com/valor-xh/p/6517376.html

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