This tutorial covers the two most fundamental query operators in MongoDB: $eq (equals) and $ne (not equals).

What you will learn:

$eq (Equality): How to find documents where a field's value exactly matches a specific value.

Important: We'll explain how db.collection.find({ field: "value" }) is just a shorthand for the more explicit db.collection.find({ field: { $eq: "value" } }).

$ne (Inequality / Not Equal): How to find all documents where a field's value does not match a specific value.

Key Point: This operator will also include documents that do not have the field at all.

Example ($eq): db.users.find({ status: { $eq: "Active" } })

Example ($ne): db.products.find({ category: { $ne: "Electronics" } })

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