- Data Structure
- Networking
- RDBMS
- Operating System
- Java
- MS Excel
- iOS
- HTML
- CSS
- Android
- Python
- C Programming
- C++
- C#
- MongoDB
- MySQL
- Javascript
- PHP
- Physics
- Chemistry
- Biology
- Mathematics
- English
- Economics
- Psychology
- Social Studies
- Fashion Studies
- Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
Can we use NOT and AND together in MongoDB?
Yes, we can use the NOT and AND together in MongoDB. The syntax is as follows
NOT X AND NOT Y = NOT (X AND Y) Let us see the working of above syntax. If both X and Y will be true then last result will be false. If one of the operands gives result false then last result will be true.
Following is the query to create a collection with documents
> db.NotAndDemo.insertOne({"StudentName":"John","StudentCountryName":"US"}); { "acknowledged" : true, "insertedId" : ObjectId("5c98746a330fd0aa0d2fe4a8") } > db.NotAndDemo.insertOne({"StudentName":"John","StudentCountryName":"UK"}); { "acknowledged" : true, "insertedId" : ObjectId("5c987478330fd0aa0d2fe4a9") } > db.NotAndDemo.insertOne({"StudentName":"David","StudentCountryName":"AUS"}); { "acknowledged" : true, "insertedId" : ObjectId("5c987487330fd0aa0d2fe4aa") } > db.NotAndDemo.insertOne({"StudentName":"Chris","StudentCountryName":"UK"}); { "acknowledged" : true, "insertedId" : ObjectId("5c9874ac330fd0aa0d2fe4ab") } > db.NotAndDemo.insertOne({"StudentName":"Chris","StudentCountryName":"US"}); { "acknowledged" : true, "insertedId" : ObjectId("5c9874b7330fd0aa0d2fe4ac") }
Following is the query to display all the documents from a collection with the help of find() method
> db.NotAndDemo.find().pretty(); This will produce the following output: { "_id" : ObjectId("5c98746a330fd0aa0d2fe4a8"), "StudentName" : "John", "StudentCountryName" : "US" } { "_id" : ObjectId("5c987478330fd0aa0d2fe4a9"), "StudentName" : "John", "StudentCountryName" : "UK" } { "_id" : ObjectId("5c987487330fd0aa0d2fe4aa"), "StudentName" : "David", "StudentCountryName" : "AUS" } { "_id" : ObjectId("5c9874ac330fd0aa0d2fe4ab"), "StudentName" : "Chris", "StudentCountryName" : "UK" } { "_id" : ObjectId("5c9874b7330fd0aa0d2fe4ac"), "StudentName" : "Chris", "StudentCountryName" : "US" }
Following is the query to use NOT and AND together, which is the same as NOT X OR NOT Y for NOT (X AND Y)
> db.NotAndDemo.find({ ... "$or": [ ... {"StudentName": {"$ne": "Chris"}}, ... {"StudentCountryName": {"$ne": "US"}} ... ] ... }).pretty();
This will produce the following output
{ "_id" : ObjectId("5c98746a330fd0aa0d2fe4a8"), "StudentName" : "John", "StudentCountryName" : "US" } { "_id" : ObjectId("5c987478330fd0aa0d2fe4a9"), "StudentName" : "John", "StudentCountryName" : "UK" } { "_id" : ObjectId("5c987487330fd0aa0d2fe4aa"), "StudentName" : "David", "StudentCountryName" : "AUS" } { "_id" : ObjectId("5c9874ac330fd0aa0d2fe4ab"), "StudentName" : "Chris", "StudentCountryName" : "UK" }
Advertisements