MongoDB — Find

Basic Find

db.users.find()
db.users.find({ name: "John" })
db.users.findOne({ name: "John" })

Comparison Operators

Operator	Description
$eq	Equal
$ne	Not equal
$gt	Greater than
$gte	Greater or equal
$lt	Less than
$lte	Less or equal
$in	In array
$nin	Not in array

Examples

// Greater than
db.users.find({ age: { $gt: 25 } })

// In array
db.users.find({ country: { $in: ["USA", "UK"] } })

// Range
db.users.find({ age: { $gte: 18, $lte: 30 } })

Projection

// Include fields
db.users.find({}, { name: 1, email: 1 })

// Exclude fields
db.users.find({}, { password: 0 })

Limit and Skip

db.users.find().limit(10)
db.users.find().skip(10).limit(10)

Sort

db.users.find().sort({ name: 1 })  // Ascending
db.users.find().sort({ name: -1 }) // Descending

Mini Practice

1. Find all documents
2. Find with conditions
3. Use projection
4. Sort and limit results

Up Next

Continue with Query — advanced queries.