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Year-over-Year Growth
Write a SQL query to calculate year-over-year movie count growth. For each year, show the year, movie count, previous year's count, and the difference. Order by year.
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Schema
movies
| id | title | year | genre | rating | votes | revenue_millions | runtime | director |
|---|---|---|---|---|---|---|---|---|
| 1 | Guardians of the Galaxy | 2014 | Action | 8.1 | 757074 | 333.13 | 121 | James Gunn |
| 2 | Prometheus | 2012 | Adventure | 7 | 485820 | 126.46 | 124 | Ridley Scott |
| 3 | Split | 2016 | Horror | 7.3 | 157606 | 138.12 | 117 | M. Night Shyamalan |
Expected output: Each year with its movie count and change from previous year
Hint
Concepts
SELECT Subquery Window Functions GROUP BY Aggregation ORDER BY Window Function / LAG
Practise the topic: SQL practice questions · CTE practice · Window function practice · GROUP BY exercises · Advanced SQL interview questions
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