SQL exercises on soccer Database: Find the number of countries participated in the EURO cup 2016

Last update on May 30 2022 07:30:31 (UTC/GMT +8 hours)

SQL soccer Database: Basic Exercise-2 with Solution

2. From the following table, write a SQL query to count the number of countries participated in the EURO cup 2016.

Sample table: player_mast

Sample Solution:

SELECT COUNT(DISTINCT team_id) 
FROM player_mast;

Sample Output:

 count
-------
    24
(1 row)

Relational Algebra Expression:

Relational Algebra Tree:

Sample Database: soccer

Duration:

Rows:

Cost:

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Previous: From the following table, write a SQL query to count the number of venues for EURO cup 2016. Return number of venues.
Next: From the following table, write a SQL query to find the number of goals scored in EURO cup 2016 within normal play schedule.

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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