Build a grid of every user_id (from logins) × every date from 2025-01-01 to 2025-01-05, with logged_in true/false for whether that user logged in that day.
30 rows with columns user_id, day, logged_in — first 3 shown:
| # | |||
|---|---|---|---|
| 1 | 1 | 2025-01-01 | true |
| 2 | 2 | 2025-01-01 | true |
| 3 | 3 | 2025-01-01 | false |
Run your code to see the output here.