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Return event_id, user_id, and sku for checkout payload items.
Result columns · in this order
event_iduser_idskuHow to approach it
Join events to json_each(payload, '$.items').
Sample input
| event_id | user_id | event_name | payload |
|---|---|---|---|
| 2 | 1 | checkout | {"device":"ios","items":["SKU-A","SKU-B"]} |
| 4 | 2 | checkout | {"device":"web","items":["SKU-C"]} |
2 rows — all rows shown.
Expected output
| event_id | user_id | sku |
|---|---|---|
| 2 | 1 | SKU-A |
| 2 | 1 | SKU-B |
| 4 | 2 | SKU-C |
3 rows — all rows shown.
Constraints
Use json_each on $.items and keep only checkout events.
Expected skills
Array expansion and event-item grain.
Submit for review to find out what your query gets right, what it gets wrong, and how it compares with the best working query for this exercise.
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