$min and $max update operators in MongoDB - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to update the field 'score' only if the new value is less than the current value using the $min operator.

MongoDB

db.collection.updateOne({ _id: 1 }, { $[1]: { score: 50 } })

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

Ainc

Bmax

Cset

Dmin

Attempts:

3 left

💡 Hint

Common Mistakes

Using $max instead of $min will update only if the new value is greater.

Using $set will always update regardless of value.

The $min operator updates the field only if the specified value is less than the current field value.

2fill in blank

medium

Complete the code to update the field 'score' only if the new value is greater than the current value using the $max operator.

MongoDB

db.collection.updateOne({ _id: 2 }, { $[1]: { score: 80 } })

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

Amax

Bmin

Cset

Dinc

Attempts:

3 left

💡 Hint

Common Mistakes

Using $min will update only if the new value is smaller.

Using $set will overwrite the value regardless.

The $max operator updates the field only if the new value is greater than the current value.

3fill in blank

hard

Fix the error in the update command to use the correct operator that updates 'level' only if the new value is greater.

MongoDB

db.collection.updateOne({ _id: 3 }, { $[1]: { level: 10 } })

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

Amin

Bmax

Cset

Dinc

Attempts:

3 left

💡 Hint

Common Mistakes

Using $min instead of $max.

Using $set which always updates.

To update only if the new value is greater, use $max. Using $min or $set would not achieve this.

4fill in blank

hard

Fill both blanks to update 'score' to 40 only if it is less than current, and 'rank' to 5 only if it is greater than current.

MongoDB

db.collection.updateOne({ _id: 4 }, { $[1]: { score: 40 }, $[2]: { rank: 5 } })

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

Amin

Bset

Cmax

Dinc

Attempts:

3 left

💡 Hint

Common Mistakes

Using $set for both fields updates unconditionally.

Mixing up $min and $max operators.

Use $min to update 'score' only if 40 is less than current, and $max to update 'rank' only if 5 is greater than current.

5fill in blank

hard

Fill all three blanks to update 'score' to 30 if less, 'level' to 15 if greater, and 'rank' to 2 if less.

MongoDB

db.collection.updateOne({ _id: 5 }, { $[1]: { score: 30, rank: 2 }, $[2]: { level: 15 }, $[3]: { extra: 100 } })

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

Amin

Bmax

Cset

Dinc

Attempts:

3 left

💡 Hint

Common Mistakes

Using $set for all fields ignores conditional updates.

Confusing which fields need $min or $max.

Use $min for 'score' and 'rank' to update if new values are less, $max for 'level' to update if greater, and $set for 'extra' to always update.