关于ntext的批量修改 这个比较总要的就是一些函数的用法

create table textvalue (IDtext ntext)
go
declare  @cunt int
set @cunt=1
while @cunt <200
	begin
	insert into textvalue values(CAST(@cunt*1000.111111 as varchar(max)))
	end
go
select * from textvalue
go
/*select replace(cast(IDtext as varchar(100)),'.','+') 
	from textvalue  where IDtext like '%.%' --这里用点 主要是有时候要修改的东西是需要限制的 
*/	
										--同时减少数据量
update 	textvalue set textvalue.IDtext=tabletest.IDtext
from (select replace(cast(IDtext as varchar(100)),'.','+')  as IDtext
	from textvalue  where IDtext like '%.%') as tabletest
where textvalue.IDtext=tabletest.IDtext  and textvalue.IDtext like '%.%'
go
drop table textvalue
go