游标操作

--
测试表--


create
 
table
 xinwen(

id 
int
  
identity
 
primary
 
key
,

nr 
nvarchar
(
500
)

)

--
测试数据--


insert
 
into
 xinwen 
values
(
'
tupian/1.jpg
'
)

insert
 
into
 xinwen 
values
(
'
tupian/2.jpg
'
);

insert
 
into
 xinwen 
values
(
'
tupian/3.jpg
'
);


GO


--
利用游标和Replace函数实现你的需求--


declare
 aa 
cursor
 
for


select
 id,nr

from
 xinwen

open
 aa

declare
 
@content
 
nvarchar
(
500
),
@id
 
int
,
@newContent
 
nvarchar
(
500
)

fetch
 
next
 
from
 aa 
into
 
@id
,
@content


while
(
@@fetch_status
=
0
)

begin


set
 
@newContent
 
=
 
REPLACE
(
@content
,
'
tupian/
'
,
'
http://www.xxxxx.com/tupian/
'
)

update
 xinwen 
set
 nr 
=
 
@newContent
 
where
 id 
=
 
@id


fetch
 
next
 
from
 aa 
into
 
@id
,
@content


end


close
 aa

deallocate
 aa

GO