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LEFT JOIN to include 0-0 score. #5

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LEFT JOIN to include 0-0 score. #5

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16 changes: 8 additions & 8 deletions 06_the_join_operation.sql
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Original file line number Diff line number Diff line change
Expand Up @@ -80,11 +80,11 @@ GROUP BY game.id

-- 13. List every match with the goals scored by each team as shown.
-- Sort your result by mdate, matchid, team1 and team2.
SELECT mdate,
team1,
SUM(CASE WHEN teamid=team1 THEN 1 ELSE 0 END) score1,
team2,
SUM(CASE WHEN teamid=team2 THEN 1 ELSE 0 END) score2
FROM game JOIN goal ON goal.matchid = game.id
GROUP BY game.id
ORDER BY mdate, matchid, team1, team2
SELECT game.mdate, game.team1,
SUM(CASE WHEN goal.teamid = game.team1 THEN 1 ELSE 0 END) AS score1,
game.team2,
SUM(CASE WHEN goal.teamid = game.team2 THEN 1 ELSE 0 END) AS score2

FROM game LEFT JOIN goal ON matchid = id
GROUP BY game.id,game.mdate, game.team1, game.team2
ORDER BY mdate,matchid,team1,team2