Mongodb and query. Similar to duplicate field names, the same considerations apply for duplicate operators used in the query. I'm guessing this is an issue with the old version of MongoDB you're running. Redirecting to /docs/intermediary/manual/reference/operator/query// Sep 18, 2025 · Query operators allow for value-based comparisons, logical evaluations, and array operations, making data retrieval more precise and efficient. In this new era of smart technology, data is being generated in high volume and every piece of data is equally important for growing industries. org The $and is a logical query operator that allows you to carry a logical AND operation on an array of one or more expressions. Jan 20, 2025 · This article talks about the frequently used queries and commands of MongoDB used by developers and DBA in their day to day development and operation life. The MongoDB Query Language (MQL) uses the same syntax as documents, making it intuitive and easy to use for even advanced querying. The following shows the syntax of the $and operator: $and :[{expression1}, {expression2},] The $and operator returns true if all expressions evaluate to true. MongoDB is a powerful NoSQL database that allows for flexible and efficient data storage and retrieval. that you will encounter in real applications. lhzcf 1yq omsn aaohtk i7eu 4g3 e0e 3tg sxw scf2