Daily Learnings

Quick notes on technical things I learn each day.

8 Mar 2026
Conditional projection
7 Mar 2026
Group projected documents
6 Mar 2026
Basic numeric aggregation stage
5 Mar 2026
Updating specific result set field
4 Mar 2026
Select field from lookup result
3 Mar 2026
Join collections with lookup
2 Mar 2026
Preserve raw/unsorted arrays
1 Mar 2026
Sorting arrays with $set
28 Feb 2026
Showing unique values as array
27 Feb 2026
Picking first document from a group