-6
只有非德国球员在GER 是team1或team2的编号的比赛中才进球。显示对德国进球的所有球员的名字
游戏和目标表之间的连接操作
游戏桌:
game id mdate stadium team1 team2
1001 8 June 2012 National Stadium, Warsaw POL GRE
1002 8 June 2012 Stadion Miejski (Wroclaw) RUS CZE
1003 12 June 2012 Stadion Miejski (Wroclaw) GRE CZE
1004 12 June 2012 National Stadium, Warsaw POL RUS
...
目标表:
matchid teamid player gtime
1001 POL Robert Lewandowski 17
1001 GRE Dimitris Salpingidis 51
1002 RUS Alan Dzagoev 15
1001 RUS Roman Pavlyuchenko 82
...
[1]: http://www.sqlzoo.net/wiki/The_JOIN_operation
感谢它帮助 – Kirtiranjan