Netflix's onboarding team wants to know how soon new users come back for a second session, and what they watch.
For every user with at least two sessions, show the title_id of their second session and the number of days between the dates of their first and second sessions. Order each user's sessions by start_ts, then session_id.
Expected output
Example of the shape (made-up values):
| user_id | title_id | days_after_first |
|---|---|---|
| 5 | 140 | 3 |
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