MongoDB Projection, Sort & Limit

Choose fields and order results.

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Projection (second argument of find) picks fields: { name: 1, _id: 0 }
.sort({ marks: -1 }): -1 for descending, 1 for ascending.
.limit(n) and .skip(n) for paging.

Key Takeaways: MongoDB Projection, Sort & Limit

Mastering MongoDB Projection, Sort & Limit helps you write clean and reliable MongoDB code. Follow standard conventions, test edge cases, and keep logic simple. Try running the code example below and complete the exercises to build confidence.

MongoDB Projection, Sort & Limit Code Example

MongoDB

db.students.find({}, { name: 1, marks: 1, _id: 0 })
  .sort({ marks: -1 })
  .limit(2)

Output

[ { name: 'Sara', marks: 94 }, { name: 'Ali', marks: 81 } ]

Run this example on your own computer. The "Get Started" lesson shows how to set it up.

MongoDB Projection, Sort & Limit Practice Exercises

Check what you learned in “MongoDB Projection, Sort & Limit”.

/ 2 solved

Fill in the blank

Sort by marks, highest first.

.sort({ marks:  })

✓ Correct! Not quite. Try again.

Multiple choice

In the projection { name: 1, _id: 0 }, what does _id: 0 do?

Hides the _id field Shows only _id Sorts by _id Deletes _id

✓ Correct! Not quite. Try again.

to save your exercise progress.

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MongoDB Update

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MongoDB Projection, Sort & Limit

💡 Key Takeaways: MongoDB Projection, Sort & Limit

MongoDB Projection, Sort & Limit Code Example

MongoDB Projection, Sort & Limit Practice Exercises

Key Takeaways: MongoDB Projection, Sort & Limit