declare @delStr nvarchar(500)
--set @delStr='<script src=https://www.webshell.cc/cn.js>'
set @delStr='<script src=https://www.webshell.cc/cn.js></script>'
/****************************************/

/**********以下为操作实体************/
set nocount on

declare @tableName nvarchar(100),@columnName nvarchar(100),@tbID int,@iRow int,@iResult int
declare @sql nvarchar(500)

set @iResult=0
declare cur cursor for
select name,id from sysobjects where xtype='U'

open cur
fetch next from cur into @tableName,@tbID

while @@fetch_status=0
begin
declare cur1 cursor for
--xtype in (231,167,239,175) 为char,varchar,nchar,nvarchar类型
select name from syscolumns where xtype in (231,167,239,175) and id=@tbID
open cur1
fetch next from cur1 into @columnName
while @@fetch_status=0
begin
set @sql='update [' + @tableName + '] set ['+ @columnName +']= replace(convert(varchar(1000),['+@columnName+']),'''+@delStr+''','''') where ['+@columnName+'] like ''%'+@delStr+'%'''
exec sp_executesql @sql
set @iRow=@@rowcount
set @iResult=@iResult+@iRow
if @iRow>0
begin
print '表：'+@tableName+',列:'+@columnName+'被更新'+convert(varchar(10),@iRow)+'条记录;'
end
fetch next from cur1 into @columnName
end
close cur1
deallocate cur1

declare cur2 cursor for
--xtype in (99,35) 为ntext,text类型
select name from syscolumns where xtype in (99,35) and id=@tbID
open cur2
fetch next from cur2 into @columnName
while @@fetch_status=0
begin
set @sql='update [' + @tableName + '] set ['+ @columnName +']= replace(convert(nvarchar(1000),['+@columnName+']),'''+@delStr+''','''') where ['+@columnName+'] like ''%'+@delStr+'%'''
exec sp_executesql @sql
set @iRow=@@rowcount
set @iResult=@iResult+@iRow
if @iRow>0
begin
print '表：'+@tableName+',列:'+@columnName+'被更新'+convert(varchar(10),@iRow)+'条记录;'
end
fetch next from cur2 into @columnName
end
close cur2
deallocate cur2

fetch next from cur into @tableName,@tbID
end
print '数据库共有'+convert(varchar(10),@iResult)+'条记录被更新!!!'

close cur
deallocate cur
set nocount off