Apple
Foundations Track · Easy · 15 min
Signup Confirmation Rate
At Apple, analysts are preparing a trend check focused on signup confirmation rate. Calculate the confirmation rate as the percentage of signups that were co...
Company labels are directional practice context, not official interview guidance.
Objective
Practice query basics through a Apple-tagged business scenario.
Approach
Use this track to lock in clean query structure, basic filtering logic, and confidence with grouped output.
Company context
Company labels are directional practice context, not official interview guidance.
At Apple, analysts are preparing a trend check focused on signup confirmation rate. Calculate the confirmation rate as the percentage of signups that were confirmed. Return confirmation_rate rounded to two decimals.
email_signups
| email_id | user_id | signup_date |
|---|---|---|
| 1 | 101 | 2024-01-01 |
| 2 | 102 | 2024-01-02 |
| 3 | 103 | 2024-01-03 |
| 4 | 104 | 2024-01-04 |
confirmations
| confirmation_id | user_id | confirmed_at |
|---|---|---|
| 10 | 101 | 2024-01-02 |
| 11 | 103 | 2024-01-05 |
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