408. Year-Over-Year (YoY) Growth

Medium Finance Growth Metrics

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

WITH yearly_sales AS (SELECT strftime('%Y', order_date) AS year, SUM(amount) AS total FROM orders GROUP BY year) SELECT year, total, LAG(total) OVER (ORDER BY year) AS prev_year_total, (total - LAG(total) OVER (ORDER BY year)) * 100.0 / LAG(total) OVER (ORDER BY year) AS yoy_growth FROM yearly_sales;

SQL Editor

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Console Output

Console Terminal

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