Projections understanding

Is projection (in mongo shell) similar to Compass Sampling? Does projection improve performance?

According to this:

https://docs.mongodb.com/manual/tutorial/optimize-query-performance-with-indexes-and-projections/#use-projections-to-return-only-necessary-data

Use Projections to Return Only Necessary Data

When you need only a subset of fields from documents, you can achieve better performance by returning only the fields you need:

Refer to this solution for detailed explanation:

Hope it helps.

1 Like