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SQL Joins exercises on soccer Database: Find the captain who was also the goalkeeper

SQL soccer Database: Joins Exercise-39 with Solution

39. From the following tables, write a SQL query to find the captain who was also the goalkeeper. Return match number, country name, player name and jersey number.

Sample table: match_captain


Sample table: soccer_country


Sample table: player_mast


Sample Solution:

SQL Code:

SELECT match_no,
       country_name,
       player_name,
       jersey_no
FROM match_captain a
JOIN soccer_country b ON a.team_id=b.country_id
JOIN player_mast c ON a.player_captain=c.player_id
AND posi_to_play='GK'
ORDER BY match_no;

Sample Output:

 match_no |  country_name  |    player_name    | jersey_no
----------+----------------+-------------------+-----------
        1 | France         | Hugo Lloris       |         1
        7 | Germany        | Manuel Neuer      |         1
       10 | Italy          | Gianluigi Buffon  |         1
       15 | France         | Hugo Lloris       |         1
       18 | Germany        | Manuel Neuer      |         1
       19 | Italy          | Gianluigi Buffon  |         1
       26 | France         | Hugo Lloris       |         1
       30 | Germany        | Manuel Neuer      |         1
       31 | Czech Republic | Petr Cech         |         1
       40 | France         | Hugo Lloris       |         1
       41 | Germany        | Manuel Neuer      |         1
       43 | Italy          | Gianluigi Buffon  |         1
       47 | Germany        | Manuel Neuer      |         1
       47 | Italy          | Gianluigi Buffon  |         1
       48 | France         | Hugo Lloris       |         1
       50 | France         | Hugo Lloris       |         1
       51 | France         | Hugo Lloris       |         1
(17 rows)

Relational Algebra Expression:

Relational Algebra Expression: Find the captain who was also the goalkeeper.

Relational Algebra Tree:

Relational Algebra Tree: Find the captain who was also the goalkeeper.

Practice Online


Sample Database: soccer

soccer database relationship structure

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Previous: From the following tables, write a SQL query to find the team against which the penalty shot number 26 had been taken. Return match number, country name.
Next: From the following tables, write a SQL query to find the number of captains who was also the goalkeeper. Return number of captains.

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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