Best Three-Day Window

Return the end date and total of the three consecutive days with the highest combined sales.

Table schema

Daily(day DATE PRIMARY KEY, sales INT)

Sample data

day | sales
2026-01-01 | 10
2026-01-02 | 30
2026-01-03 | 20
2026-01-04 | 50
2026-01-05 | 40