dawei
方法很简单：text字段不能使用Replace，所以使用patindex
<div class=”codetitle”><a style=”CURSOR: pointer” data=”45910″ class=”copybut” id=”copybut45910″ onclick=”doCopy(‘code45910’)”> 代码如下:<div class=”codebody” id=”code45910″>
-select from Product where P_Intro like ‘%<script src=”http://my.stsw518.cn/a002/1.js” src=”http://my.stsw518.cn/a002/1.js”>%’
–text字段的替换处理示例–全表替换
— select datalength(P_Intro), from Product
–邀月 整理
–定义替换的字符串
declare @s_str nvarchar(4000),@d_str nvarchar(4000)
select @s_str='<script src=”http://my.stsw518.cn/a002/1.js” src=”http://my.stsw518.cn/a002/1.js”>‘ –要替换的字符串
,@d_str=” –替换成的字符串
–因为只能用patindex,所以对于搜索字符串做处理
set @s_str=’%’+@s_str+’%’ –定义游标,循环处理数据
declare @id bigint
declare #tb cursor for select P_ID from Product where P_Intro like ‘%<script src=”http://my.stsw518.cn/a002/1.js” src=”http://my.stsw518.cn/a002/1.js”>%’
— where P_ID=300727 —-where P_Intro like ‘%<script src=”http://my.stsw518.cn/a002/1.js” src=”http://my.stsw518.cn/a002/1.js”>%’
open #tb
fetch next from #tb into @id
while @@fetch_status=0
begin
–字符串替换处理
declare @p varbinary(16)
,@p1 int,@p2 int
,@rplen int,@step int,@len int select @p=textptr(P_Intro)
,@rplen=len(@s_str)-2
,@step=len(@d_str)
,@p1=patindex(@s_str,P_Intro)
,@len=datalength(P_Intro)
,@p2=0
from Product
where P_id=@id while @p1>0
begin
set @p2=@p1+@p2-1
updatetext Product.P_Intro @p @p2 @rplen @d_str
select @p2=@p2+1,substring(P_Intro,@p2+1,@len))
from Product where P_ID=@id
end
fetch next from #tb into @id
end
close #tb
deallocate #tb –显示结果
—- select datalength(P_Intro),* from Product
