Excluding fields from results in MongoDB - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to exclude the field 'password' from the query results.

MongoDB

db.users.find({}, { [1]: 0 })

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

Aemail

Bpassword: 1

C_id

Dpassword

Attempts:

3 left

💡 Hint

Common Mistakes

Using 1 instead of 0 to exclude fields.

Excluding the wrong field name.

Setting the field 'password' to 0 in the projection excludes it from the results.

2fill in blank

medium

Complete the code to exclude both 'password' and 'email' fields from the results.

MongoDB

db.users.find({}, { password: 0, [1]: 0 })

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

Ausername

Bemail

C_id

Dage

Attempts:

3 left

💡 Hint

Common Mistakes

Using 1 instead of 0 for exclusion.

Forgetting to add the second field.

To exclude multiple fields, set each field to 0 in the projection object.

3fill in blank

hard

Fix the error in the code to exclude the 'password' field correctly.

MongoDB

db.users.find({}, { [1] })

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

Apassword: 1

Bpassword

Cpassword: 0

Dpassword: false

Attempts:

3 left

💡 Hint

Common Mistakes

Using 1 instead of 0 to exclude fields.

Using boolean false instead of 0.

Use 'password: 0' to exclude the field. Using 1 includes it, which is incorrect here.

4fill in blank

hard

Fill both blanks to exclude 'password' and include only 'username' in the results.

MongoDB

db.users.find({}, { [1]: 0, [2]: 1 })

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

Apassword

Busername

Cemail

D_id

Attempts:

3 left

💡 Hint

Common Mistakes

Trying to exclude and include fields incorrectly together.

Using wrong field names.

Set 'password' to 0 to exclude it and 'username' to 1 to include it explicitly.

5fill in blank

hard

Fill all three blanks to exclude 'password' and 'email', and include only 'username' in the results.

MongoDB

db.users.find({}, { [1]: 0, [2]: 0, [3]: 1 })

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

Apassword

Busername

Cemail

D_id

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up which fields to exclude and include.

Using 1 to exclude fields.

Set 'password' and 'email' to 0 to exclude them, and 'username' to 1 to include it.