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April 9, 2016 05:17
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比賽表，兩筆資料從一張表搜尋（國家），一張表的兩筆資料，參照替換成第二張表的參考
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| SELECT G.Home, G.Away, | |
| C1.CountryName, C2.CountryName | |
| FROM Game G | |
| JOIN Country C1 ON C1.CountryID = G.Home | |
| JOIN Country C2 ON C2.CountryID = G.Away; | |
| --http://stackoverflow.com/questions/4267929/whats-the-best-way-to-join-on-the-same-table-twice |
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