mongodb
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Need to find documents that match (or don't match) a specific list of values? This tutorial shows you exactly how to use the $in and $nin operators in MongoDB.
What you will learn:
$in (In Array): How to find documents where a field's value matches any value in a list (array) you provide. This is the perfect way to run multiple "OR" conditions on a single field.
$nin (Not In Array): The exact opposite. How to find all documents where a field's value is not in the list you provide.
Example ($in): Find all users whose status is either "Active" OR "Pending": db.users.find({ status: { $in: ["Active", "Pending"] } })
Example ($nin): Find all products that are not in the "Electronics" or "Clothing" categories: db.products.find({ category: { $nin: ["Electronics", "Clothing"] } })
#MongoDB #Database #NoSQL #Programming #HowTo #TechTips #MongoDBTutorial
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2025/11/12
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