For AI agents: a documentation index is available at https://www.mongodb.com/docs/llms.txt — markdown versions of all pages are available by appending .md to any URL path.

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CRUD Operations

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CRUD Operations

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Query for Null or Missing Fields

Query for null or missing fields in MongoDB using the following methods:

Your programming language's driver.
The MongoDB Atlas UI. To learn more, see Query for Null or Missing Fields with MongoDB Atlas.
MongoDB Compass.

Query operators in MongoDB treat null values differently.

Interface

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