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SQL exercises on soccer Database: Find the total number of players replaced in the extra time of play

SQL soccer Database: Basic Exercise-20 with Solution

20. From the following table, write a SQL query to count the total number of players replaced in the extra time of play.

Sample table: player_in_out


Sample Solution:

SELECT COUNT(*) 
FROM  player_in_out 
WHERE play_schedule='ET'
AND in_out='I';

Sample Output:

 count
-------
     9
(1 row)

Relational Algebra Expression:

Relational Algebra Expression: Find the total number of players replaced in the extra time of play.

Relational Algebra Tree:

Relational Algebra Tree: Find the total number of players replaced in the extra time of play.

Practice Online



Sample Database: soccer

soccer database relationship structure

Query Visualization:

Duration:

Query visualization of Find the total number of players replaced in the extra time of play - Duration

Rows:

Query visualization of Find the total number of players replaced in the extra time of play - Rows

Cost:

Query visualization of Find the total number of players replaced in the extra time of play - Cost

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Previous: From the following table, write a SQL query to count the total number of goalless draws have there in the entire tournament. Return number of goalless draws.
Next: 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.

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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