Aggregation in MongoDB

You can use the following methods to calculate the sum of values in a field…

You can use the following methods to calculate the average value of a field in…

You can use the following syntax to sort documents in MongoDB by multiple fields: db.myCollection.find().sort(…

You can use the following syntax to calculate the median value in MongoDB: db.teams.find().sort( {“points”:1}…

You can use the following syntax to group documents by date in MongoDB: db.collection.aggregate([ {$group:{…

You can use the following syntax to group by and count in MongoDB: db.collection.aggregate([ {$group…

You can use the following syntax to find documents with duplicate values in MongoDB: db.collection.aggregate([…

You can use the following syntax to select distinct values from multiple fields in MongoDB:…

You can use the following methods to count the distinct values in a specific field…

You can use the following syntax to group by multiple fields and perform some aggregation…