SQL Exercise: Matches end in a goalless draw in group stage of play
SQL soccer Database: Joins Exercise-22 with Solution
22. From the following tables, write a SQL query to find the matches that ended in a goalless draw at the group stage. Return match number, country name.
Sample table: match_details
Sample table: soccer_country
SELECT match_no,country_name FROM match_details JOIN soccer_country ON soccer_country.country_id=match_details.team_id WHERE win_lose='D' AND goal_score=0 AND play_stage='G' ORDER BY match_no;
match_no | country_name ----------+-------------- 18 | Germany 18 | Poland 24 | Austria 24 | Portugal 26 | Switzerland 26 | France 28 | England 28 | Slovakia (8 rows)
The said query in SQL that selects the match number and country name of all soccer matches from the tables 'match_details' and 'soccer_country' where the result was a draw, no goals were scored , and the match was played during the group stage . The results are ordered by match number.
The INNER JOIN is used to joins the 'match_details' and 'soccer_country' tables based on their common column 'team_id' and 'country_id', respectively.
The WHERE clause filters the results and include those rows for goal scored is 0 and match ended with a draw and the match was in group stage. The ORDER BY clause sorts the results by match number.
Relational Algebra Expression:
Relational Algebra Tree:
Sample Database: soccer
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Previous SQL Exercise: Matches with most stoppage time added in the 2nd half.
Next SQL Exercise: 2nd highest stoppage time in the 2nd half of matches.
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