# Unique values
Let's assume we have the following table
**sales**
country
city
amount
1
Poland
Warsaw
13
2
Germany
Berlin
24
3
Poland
Katowice
56
And we would like to know all of the countries that the product was sold.
If we use the normal query we know: `SELECT country from sales` it will return `Poland Germany Poland`. This is not what we are looking for because Poland is repeated twice.
To solve it we can use the `DISTINCT` keyword:
```sql
SELECT DISTINCT country FROM sales
```