Query Performance Comparison
Query | Index Type | Performance |
---|---|---|
{ grade: { $exists: true } } |
Sparse Index | Faster |
{ grade: { $exists: true } } |
Regular Index | Slower |
How to Check Field Existence in MongoDB?
MongoDB is a NoSQL database that offers a variety of operators to enhance the flexibility and precision of queries. One such operator is $exists
, which is used to check the presence of a field in a document.
In this article will learn about the $exists
Operator in MongoDB by covering its syntax and practical applications. We will also learn about how to query data using Atlas Search.