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sql200x以后出现主键修改问题
/*撤消主键*/ alter table [Student] drop constraint key (S_id) /*增加主键*/ alter table [Student] add constraint key (S_id) 例如: a...
/*撤消主键*/ alter table [Student] drop constraint key (S_id) /*增加主键*/ alter table [Student] add constraint key (S_id) 例如: a...