逐条更新数据的SQL语句可以方便不小心忘记更新数据少加Where语句的朋友，接下来的SQL server内容就为您介绍逐条更新数据的SQL语句写法，供您参考。
declare @tid int declare @fid int declare @i int declare @j int set @j=(select count(*) from tbl1.dbo.dnt_topics) set @i=1 while @i<@j begin set @tid = (select tid from ( select ROW_NUMBER() over (order by tid asc ) as Row, tid,fid from dnt_topics ) as sp where Row=@i) set @fid=(select fid from ( select ROW_NUMBER() over (order by tid asc ) as Row, tid,,fid from dnt_topics ) as sp where Row=@i) update tbl2.dbo.dnt_topics set fid=@fid where tid=@tid set @i=@i+1
其中，@tid表示更新限制的条件，@fid表示要更新的数据，定义@i和@j是为了方便方便循环更新，在这T_SQL语句中用了SQL2005自带的函数ROW_NUMBER()，