Create proc dbo.UpdateTextColumn
@Table varchar(100),
@Columns varchar(200),
@old varchar(100),
@new varchar(100)
as
set nocount on
declare @sql nvarchar(2000)
declare @Column varchar(50)
declare @cpos int,@npos int
set @cpos=1;
set @npos=1;
set @npos=charindex(',',@Columns,@cpos);
while(@npos>0)
begin
set @Column = substring(@Columns,@cpos,@npos-@cpos);
set @cpos = @npos+1
set @npos=charindex(',',@Columns,@cpos);
set @sql = 'update '+@Table+' set '+@Column+'=replace(cast('+@Column+' as varchar(8000)),@old,@new) where Datalength('+@Column+')<=8000';
EXECUTE sp_executesql @Sql,
N'@old varchar(100),@new varchar(100)',
@old,
@new
declare @ptr binary(16) ,@offset int,@dellen int
set @dellen = len(@old)
set @offset = 1
while @offset>=1
begin
set @offset = 0
set @sql = 'select top 1 @offset = charindex('''+@old+''' , '+@Column+'), @ptr = textptr('+@Column+') from '+@Table+' where Datalength('+@Column+')>8000 and '+@Column+' like ''%'+@old+'%''';
EXEC sp_executesql @Sql,N'@offset int OUTPUT,@ptr binary(16) OUTPUT,@old varchar(100)',
@offset OUTPUT,@ptr OUTPUT,@old;
if @offset > 0
begin
set @offset = @offset-1
set @sql='updatetext '+@Table+'.'+@Column+' @ptr @offset @dellen @new';
EXEC sp_executesql @Sql,N'@offset int ,@ptr binary(16),@dellen int,@new varchar(100)',@offset,@ptr,@dellen,@new;
end
end
end
go
Create proc dbo.ReplaceKeyWord
@old nvarchar(100),
@new nvarchar(100)
as
declare @sql nvarchar(1000)
set @sql=N'
declare @s nvarchar(4000),@tbname sysname
select @s=N'''',@tbname=N''?''
select @s=@s+N'',''+quotename(a.name)+N''=replace(''+quotename(a.name)+N'',N'''''+@old+''''',N'''''+@new+''''')''
from syscolumns a,systypes b
where a.id=object_id(@tbname)
and a.xusertype=b.xusertype
and b.name like N''%char''
if @@rowcount>0
begin
set @s=stuff(@s,1,1,N'''')
exec(N''update ''+@tbname+'' set ''+@s)
end '
--print @sql
exec sp_msforeachtable @sql;
set @sql=N'
declare @s nvarchar(4000),@tbname sysname
select @s=N'''',@tbname=N''?''
select @s=@s+quotename(a.name)+N'',''
from syscolumns a,systypes b
where a.id=object_id(@tbname)
and a.xusertype=b.xusertype
and b.name like N''%text''
if @@rowcount>0
begin
exec UpdateTextColumn @tbname,@s,'''+@old+''','''+@new+'''
end
' ;
exec sp_msforeachtable @sql
go
--使用方法如下：Exec ReplaceKeyWord 'www.aaa.com','www.bbb.cn' 按f5