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CREATE TABLE Album (
name VARCHAR(50),
lenght FLOAT,
genre VARCHAR(30),
nrSongs INT,
PRIMARY KEY (name, writer),
FOREIGN KEY (writer) REFERENCES Musician(name) OR Band(name),
FOREIGN KEY (Studio) REFERENCES Studio(name)
);
好的這就是我想要做的,音樂家或樂隊,但是這給了我一個OR語句錯誤,你知道實現這個的正確方法嗎?我找不到它。 謝謝:)在外鍵中創建帶有兩個引用的表
看看這裏:http://stackoverflow.com/questions/7844460/foreign-key-to-multiple-tables – deterministicFail 2014-12-03 16:57:58