SQL - 如何創建複合主鍵

Question

我正在創建複合主鍵。我想在創建表時將屬性組合爲主鍵。我正在研究Oracle 10g數據庫和SQL作爲查詢語言。

Answer 1

create table foo 
(
    col_one integer not null, 
    col_two integer not null, 
    some_other_column varchar(100) not null, 
    constraint pk_foo primary key (col_one, col_two) 
); 

更多細節和例子在手冊中：

• http://docs.oracle.com/cd/E11882_01/server.112/e26088/statements_7002.htm#i2095331
• http://docs.oracle.com/cd/E11882_01/server.112/e26088/clauses002.htm#CJAEDFIB