SQL Exercise: Find the country where Football EURO cup 2016 held

SQL soccer Database: Joins Exercise-6 with Solution

6. From the following tables, write a SQL query to find out which country hosted the 2016 Football EURO Cup. Return country name.

Sample table: soccer_country

Sample table: soccer_city

Sample table: soccer_venue

Sample Solution:

SQL Code:

SELECT country_name
FROM soccer_country a
JOIN soccer_city b ON a.country_id=b.country_id
JOIN soccer_venue c ON b.city_id=c.city_id
GROUP BY country_name;

Sample Output:

 country_name
--------------
 France
(1 row)

Code Explanation:

The said query in SQL that selects the unique country names of all countries that have soccer venues.
The JOIN clause joins the soccer_country and soccer_city table based on the country_id column and the soccer_city and soccer_venue tables are joins based on the city_id column.
The result set are grouped by country name.

Relational Algebra Expression:

Relational Algebra Tree:

Practice Online

Sample Database: soccer

Query Visualization:

Duration:

Rows:

Cost:

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Previous SQL Exercise: Find the scorer of only goal along with his country.
Next SQL Exercise: Find the player who socred first goal of EURO cup 2016.