The MongoDB Aggregation Framework provides a means to reshape and aggregate data in MongoDB 2.2+.
I'm trying to group a set of documents and count them based on their value. For example { "_id" : 1, "item" : "abc1", "…
mongodb mongodb-query aggregation-framework nosqlHow can i use a for loop in the mongo db shell? My attemps are stucking at this point: for (…
mongodb mongodb-query aggregation-framework mongo-shell mongodb-aggregationIs there an operator I could use in aggregate function to get a string instead of ObjectId in response? db.…
mongodb mongodb-query aggregation-frameworkI would like to use mongoDB's Aggregation Framework to run what in SQL would look a bit like: SELECT SUM(…
mongodb aggregation-frameworkSo as you all know, find() returns an array of results, with findOne() returning just a simply object. With Angular, …
mongodb mongodb-query aggregation-frameworkI have a "status" collection like this strcture - { _id: ObjectId("545a0b63b03dbcd1238b4567"), status: 1004, comment: "Rem dolor …
mongodb mongodb-query aggregation-frameworkI've been looking for a while now and can't seem to sort an inner array and keep that in the …
mongodb aggregation-frameworkI have a collection of documents: date: Date users: [ { user: 1, group: 1 } { user: 5, group: 2 } ] date: Date users: [ { user: 1, group: 1 } { user: 3, group: 2 } ] …
mongodb mapreduce mongodb-query aggregation-frameworkHow do I concatenate values from two string fields and put it into a third one? I've tried this: db.…
mongodb mongodb-query aggregation-framework string-concatenation mongodb-updateI am using aggregate method in mongoDB to group but when I use $group it returns the only field which …
node.js mongodb mongoose aggregation-framework