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Tag Archives: MongoDB-method

In MongoDB, Population is the process of replacing the specified path in the document of one collection with the actual document from the other collection.… Read More
The following approach covers move MongoDB documents from one collection to another. With the help of mongoose, we will move a MongoDB document from one… Read More
MongoDB, the most popular NoSQL database, we can get rows from the database by multiple columns conditionally from MongoDB Collection using the MongoDB collection.find() function… Read More
In MongoDB, copyTo() method is used to copies all the documents from one collection(Source collection) to another collection(Target collection) using server-side JavaScript and if that… Read More
The createIndexes() method creates one or more indexes on the specified collection. It is used to create one or more indexes based on the field… Read More
The findOneAndUpdate() method updates the first matched document in the collection that matches the selection criteria. If more than one document matched the selection criteria… Read More
In MongoDB, find() method is used to select documents in a collection and return a cursor to the selected documents. Cursor means a pointer that… Read More
In MongoDB, indexes are special data structures that store some information related to the documents such that it becomes easy for MongoDB to find the… Read More
The findOneAndReplace() method replaces the first matched document based on the given selection criteria. By default, this method returns the original document. To return the… Read More
The deleteOne() method deletes the first document from the collection that matches the given selection criteria. It will delete/remove a single document from the collection.… Read More
The findOneAndDelete() method deletes a single document based on the selection criteria from the collection. It deletes the first document from the collection that matches… Read More
The dropIndex() method drops or delete the specified index from the given collection. It takes only one parameter which is the index, that we want… Read More
In MongoDB, map-reduce is a data processing programming model that helps to perform operations on large data sets and produce aggregated results. MongoDB provides the… Read More
In MongoDB, the distinct() method finds the distinct values for a given field across a single collection and returns the results in an array. It… Read More
In MongoDB, the countDocuments() method counts the number of documents that matches to the selection criteria. It returns a numeric value that represents the total… Read More