414. Customer Lifecycle Stage

Medium Retail Retention & Churn

Query Rules

The query columns and order must match the expected result schema.
NULL values should be handled appropriately where applicable.
The grader compares output values and sorting order to evaluate.

Schema Browser

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locations

3 cols

departments

3 cols

employees

6 cols

orders

6 cols

Reference Solution

Expected SQL

SELECT customer_name, CASE WHEN COUNT(*) = 1 THEN 'New' WHEN MAX(order_date) >= DATE('2025-12-11', '-6 months') THEN 'Repeat' ELSE 'Lapsed' END AS lifecycle_stage FROM orders GROUP BY customer_name ORDER BY customer_name;

SQL Editor

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Console Output

Console Terminal

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