$ne for not equal in MongoDB - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to find documents where the field 'status' is not equal to 'active'.

MongoDB

db.collection.find({ status: { [1]: "active" } })

Drag options to blanks, or click blank then click option'

A$ne

B$eq

C$gt

D$in

Attempts:

3 left

💡 Hint

Common Mistakes

Using $eq instead of $ne.

Using $in which checks for inclusion in an array.

Using $gt which checks for greater than.

The $ne operator selects documents where the value of the field is not equal to the specified value.

2fill in blank

medium

Complete the code to find documents where the 'age' field is not equal to 30.

MongoDB

db.users.find({ age: { [1]: 30 } })

Drag options to blanks, or click blank then click option'

A$gte

B$lt

C$eq

D$ne

Attempts:

3 left

💡 Hint

Common Mistakes

Using $gte or $lt which are comparison operators but not 'not equal'.

Using $eq which means equal, not not equal.

The $ne operator is used to find documents where the 'age' is not 30.

3fill in blank

hard

Fix the error in the query to find documents where 'category' is not 'books'.

MongoDB

db.products.find({ category: [1] })

Drag options to blanks, or click blank then click option'

A$ne:

B{ $ne: }

C{ $ne: "books" }

D$ne

Attempts:

3 left

💡 Hint

Common Mistakes

Writing $ne without curly braces.

Using $ne without a colon or value.

Placing $ne outside an object.

The correct syntax requires the $ne operator inside an object with the value, like { $ne: "books" }.

4fill in blank

hard

Fill both blanks to find documents where 'status' is not 'pending' and 'priority' is not 1.

MongoDB

db.tasks.find({ status: { [1]: "pending" }, priority: { [2]: 1 } })

Drag options to blanks, or click blank then click option'

A$ne

B$eq

C$gt

D$lt

Attempts:

3 left

💡 Hint

Common Mistakes

Using $eq which means equal, not not equal.

Mixing different operators like $gt or $lt which check greater or less than.

Both conditions use $ne to exclude documents with those exact values.

5fill in blank

hard

Fill all three blanks to find documents where 'type' is not 'admin', 'score' is not 100, and 'active' is not false.

MongoDB

db.users.find({ type: { [1]: "admin" }, score: { [2]: 100 }, active: { [3]: false } })

Drag options to blanks, or click blank then click option'

A$eq

B$ne

C$gt

D$lt

Attempts:

3 left

💡 Hint

Common Mistakes

Using $eq which means equal, not not equal.

Using $gt or $lt which check greater or less than, not inequality.

All three fields use $ne to exclude documents with those exact values.