SQL exercises on soccer Database: Find the name and country of the referee who assisted the referee in the opening match
SQL soccer Database: Joins Exercise-10 with Solution
10. From the following tables, write a SQL query to find the referee who assisted the referee in the opening match. Return associated referee name, country name.
Sample table: asst_referee_mast
Sample table: soccer_country
Sample table: match_details
Sample Solution:
SQL Code:
SELECT ass_ref_name, country_name
FROM asst_referee_mast a
JOIN soccer_country b
ON a.country_id=b.country_id
JOIN match_details c
ON a.ass_ref_id=c.ass_ref
WHERE match_no=1;
Sample Output:
ass_ref_name | country_name --------------+-------------- Gyorgy Ring | Hungary Vencel Toth | Hungary (2 rows)
Relational Algebra Expression:
Relational Algebra Tree:
Practice Online
Sample Database: soccer
Query Visualization:
Duration:
Rows:
Cost:
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Previous: From the following tables, write a SQL query to find the referee who managed the final match. Return referee name, country name.
Next: From the following tables, write a SQL query to find the referee who assisted the referee in the final match. Return associated referee name, country name.
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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
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