w3resource

SQL exercises on soccer Database: Compute a list to show the number of substitute happened in various stage of play for the entire tournament

SQL soccer Database: Basic Exercise-21 with Solution

21. From the following table, write a SQL query to count the number of substitute happened in various stage of play for the entire Tournament. Sort the result-set in ascending order by play-half, play-schedule and number of substitute happened. Return play-half, play-schedule, number of substitute happened.

Sample table: player_in_out


Sample Solution:

SELECT play_half,play_schedule,COUNT(*) 
FROM player_in_out 
WHERE in_out='I'
GROUP BY play_half,play_schedule
ORDER BY play_half,play_schedule,count(*) DESC;

Sample Output:

 play_half | play_schedule | count
-----------+---------------+-------
         1 | ET            |     4
         1 | NT            |     3
         2 | ET            |     5
         2 | NT            |   272
         2 | ST            |     9
(5 rows)

Relational Algebra Expression:

Relational Algebra Expression: Compute a list to show the number of substitute happened in various stage of play for the entire tournament.

Relational Algebra Tree:

Relational Algebra Tree: Compute a list to show the number of substitute happened in various stage of play for the entire tournament.

Practice Online



Sample Database: soccer

soccer database relationship structure

Query Visualization:

Duration:

Query visualization of Compute a list to show the number of substitute happened in various stage of play for the entire tournament - Duration

Rows:

Query visualization of Compute a list to show the number of substitute happened in various stage of play for the entire tournament - Rows

Cost:

Query visualization of Compute a list to show the number of substitute happened in various stage of play for the entire tournament - Cost

Have another way to solve this solution? Contribute your code (and comments) through Disqus.

Previous: From the following table, write a SQL query to count the total number of players replaced in the extra time of play.
Next: From the following table, write a SQL query to count the number of shots taken in penalty shootout matches. Number of shots as "Number of Penalty Kicks".

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.



SQL: Tips of the Day

Nested select statement in SQL Server.

You need to alias the subquery.

SELECT name FROM (SELECT name FROM agentinformation) a 

or to be more explicit

SELECT a.name FROM (SELECT name FROM agentinformation) a  

Database: SQL Server

Ref: https://bit.ly/3Qruiu5