--如果要修改表的结构:alter table TableNameadd uuid varchar(100)go--添加唯一约束alter table TableNameadd constraint uin_id unique(uuid)--赋值update TableName set uuid = newid()go--如果不要修改表结构,可以用临时表来存储并赋值select *,newid() as uuid into #temp from TableNamegoselect * from #temp...