复制代码 代码如下: declare @t varchar(255),@c varchar(255) declare table_cursor cursor for select a.name,b.name from sysobjects a,syscolumns b ,systypes c where a.id=b.id and a.xtype='u' and c.name in ('char', 'nchar', 'nvarchar', '
复制代码 代码如下:declare @t varchar(255),@c varchar(255) declare table_cursor cursor for select a.name,b.name from sysobjects a,syscolumns b ,systypes c where a.id=b.id and a.xtype='u' and c.name in ('char', 'nchar', 'nvarchar', 'varchar','text','ntext'/* --这里如果你的text(ntext)类型没有超过8000(4000)长度，才可以使用*/) declare @str varchar(500),@str2 varchar(500) set @str='a' /*这里是你要替换的字符*/ set @str2='' /*替换后的字符*/ open table_cursor fetch next from table_cursor into @t,@c while(@@fetch_status=0) begin exec('update [' + @t + '] set [' + @c + ']=replace(cast([' + @c + '] as varchar(8000)),'''+@str+''','''+ @str2 +''')') fetch next from table_cursor into @t,@c end close table_cursor deallocate table_cursor; 小于8000的处理 update buyok_Orderlist set Notes=replace(cast(Notes as varchar(8000)),'a','') 如果text/ntext超过8000/4000,看如下例子<没有试过> declare @pos int declare @len int declare @str nvarchar(4000) declare @des nvarchar(4000) declare @count int set @des ='<requested_amount+1>'--要替换成的值 set @len=len(@des) set @str= '<requested_amount>'--要替换的字符 set @count=0--统计次数. WHILE 1=1 BEGIN select @pos=patINDEX('%'+@des+'%',propxmldata) - 1 from 表名 where 条件 IF @pos>=0 begin DECLARE @ptrval binary(16) SELECT @ptrval = TEXTPTR(字段名) from 表名 where 条件 UPDATETEXT 表名.字段名 @ptrval @pos @len @str set @count=@count+1 end ELSE break; END select @count
