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SQL Exercise: Matches, one goal wins except decided by penalty kicks

SQL soccer Database: Basic Exercise-14 with Solution

14. From the following table, write a SQL query to calculate the number of matches that ended in a single goal win, excluding matches decided by penalty shootouts. Return number of matches.

Sample table: match_details


Sample Solution:

SELECT COUNT(goal_score) 
FROM match_details 
WHERE win_lose='W' 
AND decided_by<>'P'
AND goal_score=1;

Sample Output:

 count
-------
    13
(1 row)

Relational Algebra Expression:

Relational Algebra Expression: Find the number of matches ending with only one goal win except those matches which was decided by penalty shootout.

Relational Algebra Tree:

Relational Algebra Tree: Find the number of matches ending with only one goal win except those matches which was decided by penalty shootout.

Practice Online



Sample Database: soccer

soccer database relationship structure

Query Visualization:

Duration:

Query visualization of Find the number of matches ending with only one goal win except those matches which was decided by penalty shootout - Duration

Rows:

Query visualization of Find the number of matches ending with only one goal win except those matches which was decided by penalty shootout - Rows

Cost:

Query visualization of Find the number of matches ending with only one goal win except those matches which was decided by penalty shootout - Cost

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Previous SQL Exercise: Matches, goalless draws in group stage matches.
Next SQL Exercise: Total number of players replaced in the tournament.

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SQL: Tips of the Day

Can a foreign key be NULL and/or duplicate?

First remember a Foreign key simply requires that the value in that field must exist first in a different table (the parent table). That is all an Foreign key is by definition. Null by definition is not a value. Null means that we do not yet know what the value is.

Ref: https://bit.ly/3uVu3OS