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CODE WORKSPACE
Return exactly customer_id and audit_status across the union of current-dimension keys and clean staged keys.
Result columns · in this order
customer_idaudit_statusHow to approach it
Build all_keys from current and staged keys, then left join each side and classify.
Sample input
| customer_id | source_tier | target_tier | source_deleted |
|---|---|---|---|
| 101 | gold | silver | 0 |
| 102 | silver | null | 0 |
| 103 | bronze | bronze | 1 |
| 104 | platinum | gold | 0 |
| 105 | bronze | bronze | 0 |
| 106 | silver | null | 0 |
| 107 | null | silver | null |
7 rows — all rows shown.
Expected output
| customer_id | audit_status |
|---|---|
| 101 | attribute_drift |
| 102 | missing_current |
| 103 | source_delete |
| 104 | attribute_drift |
| 105 | aligned |
| 106 | missing_current |
| 107 | missing_source |
7 rows — all rows shown.
Constraints
Dedupe customer_stage before comparison. Use statuses missing_current, missing_source, source_delete, attribute_drift, and aligned. Order by customer_id.
Expected skills
Current-state snapshot auditing and source/target drift labels.
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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