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
Query BinData by Type in MongoDB
To query by type, use subtype() in MongoDB. Let us create a collection with documents −
> db.demo249.insertOne({ "_id" : BinData(0,"AQAAAAEBAAVlbl9VSwAAAAAAAAhv") });
{
"acknowledged" : true,
"insertedId" : BinData(0,"AQAAAAEBAAVlbl9VSwAAAAAAAAhv")
}
> db.demo249.insertOne({"_id" : BinData(4,"CNDF66qIlCY92q1vFAAAAQ==")});
{
"acknowledged" : true,
"insertedId" : UUID("08d0c5eb-aa88-9426-3dda-ad6f14000001")
}
> db.demo249.insertOne({"_id" : BinData(3,"CNDF66qJ29g92q1vFAAAEw==")});
{
"acknowledged" : true,
"insertedId" : BinData(3,"CNDF66qJ29g92q1vFAAAEw==")
}Display all documents from a collection with the help of find() method −
> db.demo249.find();
This will produce the following output −
{ "_id" : BinData(0,"AQAAAAEBAAVlbl9VSwAAAAAAAAhv") }
{ "_id" : UUID("08d0c5eb-aa88-9426-3dda-ad6f14000001") }
{ "_id" : BinData(3,"CNDF66qJ29g92q1vFAAAEw==") }Following is how to query BinData by Type −
> db.demo249.find(function(){ return this._id.subtype() == 0 });This will produce the following output −
{ "_id" : BinData(0,"AQAAAAEBAAVlbl9VSwAAAAAAAAhv")
Updated on: 30-Mar-2020
574 Views
Advertisements