Using the find() function by passing the parameters of the fields other than the unique objectId. We can provide the ObjectId as a parameter of the find() function in MongoDB and its respective document is displayed on the console to the user.ObjectId is the unique id that is automatically allocated when a new document is inserted into the collection. In the above example, the document is found on the basis of the ObjectId of the document.

When the user calls findById(_id) in Mongoose, it automatically calls findOne().As the name suggests, find by id is used to retrieve the details of the document matching the particular ‘id’ provided by the user where ‘id’ is the automatically generated ‘id’ when a document is created in the database.It returns the cursor to the documents which match the query criteria. This parameter can be omitted in order to return all the fields in the matching documents. It specifies the field which will return matching the query filter. projection: It is an optional parameter.This parameter can be omitted in order to return all the documents in a collection. It specifies the selection filter using the operators of the query. Hadoop, Data Science, Statistics & othersįind() function is used in order to use find by id in MongoDB.ĭb.collection_name.find(query, projection)

Robo 3t filter