nitinrajputind / MongoDB_H1

MongoDB Shell Queries

MongoDb - Handson 1

#data - https://prepbytes-misc-images.s3.ap-south-1.amazonaws.com/assets/1640781204638-employee.json

Task

1 . Create a database , give it name like ""Human_Resource"". Create a collection inside this named ""employee""

  || use Human_Resource

  || db.employee.insertMany(data)

2. Query the collection ""employee"" and list all the documents

 || db.employee.find()

3. Query the collection ""employee"" and list the employees who are having salary more than 30000

db.employee.find({"salary": {$gt:"30000"}})

4. Query the collection ""employee"" and list the employees who are having experience more than 2 years.

 || db.employee.find({"overallExp":{$gt:"2"}})

5. Query the collection ""employee"" and list the employees who are graduated after 2015 and having experience more than 1 year

 || db.employee.find({"yearGrad":{$gt:"2015"}, "overallExp":{$gt:"1"}})

6. Query the collection ""employee"" and update the salary of the employee whose salary is greater than 70000 to 65000

 || db.employee.updateOne({"salary":{$gt:"70000"}},{$set:{"salary":"65000"}})

7. Delete all the documents from ""employee"" where last company is Y"

 || db.employee.deleteMany({"lastCompany":"Y"})