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oracle怎么创建外键?
create TABLE zhao(x0dx0aid number primary key,x0dx0amingcheng nvarchar2(50),x0dx0aneirong nvarchar2(50),x0d
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oracle怎么创建外键?
create TABLE zhao(x0dx0aid number primary key,x0dx0amingcheng nvarchar2(50),x0dx0aneirong nvarchar2(50),x0d