Find() method with Projection
In MongoDB, projection means selecting only the necessary data rather than selecting whole of the data of a document.
The basic syntax of find() method with projection is as follows
If you want to to show all document without the age field then the command is as follows
If you want to show only the age field then the command is as follows
Note: _id field is always displayed while executing find() method, if you don't want this field, then you need to set it as 0.
Note: 1 is used to show the field while 0 is used to hide the fields.