更新时间:2023-11-30 19:13:46
ALTER TABLE provider ADD PRIMARY KEY(person,place,thing);
如果主键已经存在,那么你想这样做
If a primary key already exists then you want to do this
ALTER TABLE provider DROP PRIMARY KEY, ADD PRIMARY KEY(person, place, thing);
ALTER TABLE 添加复合主键
如何在Hibernate中的复合主键中自动增加ID?
复合主键与附加“ID"柱子?
复合主键与附加“ID”柱?