create function f_convert( @str nvarchar(4000), --要转换的字符串 @flag bit --转换标志,0转换成半角,1转换成全角 )returns nvarchar(4000) as begin declare @pat nvarchar(8),@step int,@i int,@spc int if @flag=0 select @pat=n,@step=-65248, @str=replace(@str,n' ',n' ') else select @pat=n,@step=65248, @str=replace(@str,n' ',n' ') set @i=patindex(@pat collate latin1_general_bin,@str) while @i> 0 select @str=replace(@str, substring(@str,@i,1), nchar(unicode(substring(@str,@i,1))+@step)) ,@i=patindex(@pat collate latin1_general_bin,@str) return(@str) end --table1为要转换的表，美国服务器，香港虚拟主机，column1为要转换的表字段
调用：update table1 set column1=dbo.f_convert(column1,0);，香港虚拟主机