$gt and $gte for greater than in MongoDB - Cheat Sheet & Quick Revision

Recall & Review

beginner

What does the $gt operator do in MongoDB?

The $gt operator finds documents where the value of a field is greater than a specified value.

beginner

How is $gte different from $gt in MongoDB?

$gte means greater than or equal to, so it includes the specified value itself, while $gt means strictly greater than.

beginner

Write a MongoDB query to find all products with a price greater than 100.

{ price: { $gt: 100 } }

beginner

Write a MongoDB query to find all users with age greater than or equal to 18.

{ age: { $gte: 18 } }

beginner

If you want to include the value 50 in your search for values greater than or equal to 50, which operator should you use?

You should use $gte because it includes the value itself (50) and all values greater than 50.

Which MongoDB operator finds documents where a field is strictly greater than a value?

A $gt

B $gte

C $lt

D $lte

$gt means greater than, excluding the value itself.

What does { age: { $gte: 21 } } find?

A Documents with age less than 21

B Documents with age equal to 21 only

C Documents with age greater than 21 only

D Documents with age 21 or older

$gte means greater than or equal to, so it includes 21 and above.

Which query finds products priced more than 50 but not including 50?

A { price: { $gte: 50 } }

B { price: { $gt: 50 } }

C { price: { $lte: 50 } }

D { price: { $lt: 50 } }

$gt excludes the value 50 itself.

If you want to find all records with a score at least 75, which operator do you use?

A $gte

B $lt

C $gt

D $lte

$gte means greater than or equal to, so it includes 75.

True or False: $gt includes the value you compare against.

A True

B Sometimes

C False

D Depends on data type

$gt excludes the value itself; it only matches strictly greater values.

Explain the difference between $gt and $gte in MongoDB queries.

Think about whether the value you compare against is included or not.

Write a MongoDB query to find all documents where the field 'score' is greater than or equal to 90.

Use the $gte operator inside the field object.