SQL Joins exercises on soccer Database: Find the referees and number of booked he made
SQL soccer Database: Joins Exercise-54 with Solution
54. From the following tables, write a SQL query to find the referees and number of booked they made. Return referee name, number of matches.
Sample table: player_booked
Sample table: match_mast
Sample table: referee_mast
Sample Solution:
SQL Code:
SELECT c.referee_name,
count(b.match_no)
FROM player_booked a
JOIN match_mast b ON a.match_no=b.match_no
JOIN referee_mast c ON b.referee_id=c.referee_id
GROUP BY referee_name
ORDER BY count(b.match_no) DESC;
Sample Output:
referee_name | count -------------------------+------- Mark Clattenburg | 21 Nicola Rizzoli | 20 Milorad Mazic | 13 Viktor Kassai | 12 Sergei Karasev | 12 Damir Skomina | 12 Bjorn Kuipers | 12 Cuneyt Cakir | 11 Pavel Kralovec | 11 Jonas Eriksson | 11 Carlos Velasco Carballo | 10 Szymon Marciniak | 10 Ovidiu Hategan | 9 Felix Brych | 9 Martin Atkinson | 9 William Collum | 8 Svein Oddvar Moen | 8 Clement Turpin | 3 (18 rows)
Relational Algebra Expression:
Relational Algebra Tree:
Practice Online
Sample Database: soccer
Have another way to solve this solution? Contribute your code (and comments) through Disqus.
Previous: From the following tables, write a SQL query to find those referees who managed the number of matches in each venue. Return referee name, country name, venue name, number of matches.
Next: From the following tables, write a SQL query to find those referees who booked most number of players. Return referee name, number of matches.
What is the difficulty level of this exercise?
Test your Programming skills with w3resource's quiz.
SQL: Tips of the Day
SQL Server SELECT into existing table.
INSERT INTO dbo.TABLETWO SELECT col1, col2 FROM dbo.TABLEONE WHERE col3 LIKE @search_key
This assumes there's only two columns in dbo.TABLETWO - you need to specify the columns otherwise:
INSERT INTO dbo.TABLETWO (col1, col2) SELECT col1, col2 FROM dbo.TABLEONE WHERE col3 LIKE @search_key
Database: SQL Server
Ref: https://bit.ly/3y6tpA3
- New Content published on w3resource:
- HTML-CSS Practical: Exercises, Practice, Solution
- Java Regular Expression: Exercises, Practice, Solution
- Scala Programming Exercises, Practice, Solution
- Python Itertools exercises
- Python Numpy exercises
- Python GeoPy Package exercises
- Python Pandas exercises
- Python nltk exercises
- Python BeautifulSoup exercises
- Form Template
- Composer - PHP Package Manager
- PHPUnit - PHP Testing
- Laravel - PHP Framework
- Angular - JavaScript Framework
- Vue - JavaScript Framework
- Jest - JavaScript Testing Framework