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A question about task 8 in JOIN #8

@betterMax

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@betterMax

Your correct code

SELECT DISTINCT player
FROM game
JOIN goal ON goal.matchid = game.id
WHERE (team1 = 'GER' OR team2 = 'GER')
AND teamid <> 'GER'

My wrong code

SELECT DISTINCT player
FROM game
JOIN goal ON goal.matchid = game.id 
WHERE (team1='GER' OR team2='GRE') 
AND teamid <> 'GER'

I really couldn't find the difference. But the answer is different. If I use your code, I can get one goal in match 1010 and one goal in match 2012. If I use my code, I can get two goals in 1001. The other four goals are the same. I am wondering if you can share your wisdom with me on this. Thanks a lot.

Btw here is the test link.

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