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DISTINCT Values
Find all unique countries that orders have been placed from. Show just the country column with no duplicates. Sort alphabetically. Then, in a second approach, count how many unique countries there are (as country_count).
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Schema
orders
| order_id | customer_id | product | category | quantity | price | total | order_date | country | status |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 1 | Laptop Pro | Electronics | 1 | 1299.99 | 1299.99 | 2024-01-15 | USA | completed |
| 2 | 2 | Wireless Mouse | Electronics | 2 | 49.99 | 99.98 | 2024-01-16 | Canada | completed |
| 3 | 3 | Office Chair | Furniture | 1 | 349.99 | 349.99 | 2024-01-17 | USA | completed |
Expected output: List of unique countries, sorted A-Z
Hint
SELECT DISTINCT country removes duplicate values. For the count: SELECT COUNT(DISTINCT country) AS country_count.
Concepts
SELECT DISTINCT
Practise the topic: SQL practice questions
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