After Successful insertion of data into Mongo DB, there are different ways to retrieve the data from Collections, like Sql we can retrieve all the data from the collection or else we can retrieve the values of specific value by passing input to the retrieving Query.
Some basic Examples to retrieve the data from Mongo DB
For insertion check : Insert Data into MongoDB and Insert Multiple Records into Mongo DB
To get all the details from the studentDetails
db.studentDetails.find()
To get all the details from studentDetails with Student_name as Raghav
db.studentDetails.find({Student_name:"Raghav"})
To get all the details from studentDetails with Student_name as Raghav and Ga Eul
db.studentDetails.find({Student_name:{$in :["Raghav","Ga Eul"]}})
Aggregate using less-than
db.studentDetails.find({Percentage:{$lt:85}})
Aggregate using less-than greater-than
db.studentDetails.find({Percentage:{$gt:85}})
Or in mongo DB
db.studentDetails.find({Student_name:"Ga Eul",$or:[{"Percentage":"96%"}]