Day-1 Retention

Day-1 retention is the percentage of players who logged in again on the day after their first login. Return it rounded to 2 decimals.

Table schema

Logins(player VARCHAR(10), login_date DATE)

Sample data

player | login_date
P1 | 2026-03-01
P1 | 2026-03-02
P2 | 2026-03-01
P3 | 2026-03-02
P3 | 2026-03-03
P2 | 2026-03-05
P4 | 2026-03-01
P4 | 2026-03-02