PayPal
Foundations Track · Medium · 25 min
Bidirectional Transfer Pairs
Finance operations wants to count how many unique user-to-user transfer relationships exist in the ledger. Transfers between the same two users should count ...
Company labels are directional practice context, not official interview guidance.
Objective
Practice query basics through a PayPal-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.
Finance operations wants to count how many unique user-to-user transfer relationships exist in the ledger. Transfers between the same two users should count as one relationship even when money moved in both directions.
This is a Pro question
Upgrade to Pro to unlock this prompt, the SQL workspace, and all 254 problems.
Upgrade to Pro — unlock all 254 problemsSQL workspace
Run queries against the protected question data, then submit once the result shape looks right.
Sign in to run SQL
Create a free account or sign in before running queries against protected question data.