MongoDB Mastering MongoDB for Beginners (Theory and Projects) - $expr Operator

The video tutorial explores evaluation query operators in MongoDB, focusing on the expression operator. It demonstrates how to create a collection and use the expression operator to filter records based on criteria like greater than, less than, and equal to. The tutorial also covers advanced usage of the expression operator, including custom expressions, and emphasizes the importance of syntax in MongoDB queries.

Explain how to use the 'Lt' operator in a MongoDB query.

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What happens if you reverse the order of attributes in a comparison query?

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Discuss the flexibility of the expression operator in MongoDB queries.

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