InterviewSolution
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InterviewSolution
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Which of the following query selects documents in the records collection that match the condition { “user_id”: { $lt: 42 } }?(a) db.records.findOne( { “user_id”: { $lt: 42 } }, { “history”: 0 } )(b) db.records.find( { “user_id”: { $lt: 42 } }, { “history”: 0 } )(c) db.records.findOne( { “user_id”: { $lt: 42 } }, { “history”: 1 } )(d) db.records.select( { “user_id”: { $lt: 42 } }, { “history”: 0 } )The question was posed to me during an online interview.The origin of the question is Read Operations in division MongoDB CRUD Concepts and Operation of MongoDB |
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Answer» Right answer is (B) db.records.find( { “user_id”: { $lt: 42 } }, { “history”: 0 } ) |
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