Openai Data Scientist Data Manipulation (SQL/Python) Interview Questions
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OpenAI
Medium
Data ScientistDesign Schema for Accurate Subscription State Tracking
subscription_events +----------+---------------------+-----------+-----------+ | user_id | event_ts | event_type| plan_type | +----------+...
Data Manipulation (SQL/Python)
76
0
Aug 4, 2025
OpenAI
Medium
Data ScientistDesign Schema and Logic for Subscription Event Tracking
user_subscription_events +----------+-------------+---------------------+-----------+---------+ | user_id | event_type | event_time | plan_...
Data Manipulation (SQL/Python)
48
0
Jul 12, 2025
OpenAI
Medium
Data ScientistDebug and harden trial-assignment Python code
You are given the following simplified Python snippet used to assign users and trigger a 1‑month free trial: """ import random, datetime, requests def...
Data Manipulation (SQL/Python)
0
0
Oct 13, 2025
OpenAI
Medium
Data ScientistWrite SQL for post-trial conversion cohorts
Using the schema below, write SQL to compute, for users first exposed between 2025‑06‑01 and 2025‑06‑30 (inclusive), the intent‑to‑treat paid conversi...
Data Manipulation (SQL/Python)
0
0
Oct 13, 2025