WHERE N <= DATALENGTH(CountryName)

SET TEXTSIZE 0
SET NOCOUNT ON
-- Create the variables for the current character string position 
-- and for the character string.
DECLARE @position int, @string char(15)
-- Initialize the variables.
SET @position = 1
SET @string = 'Du monde entier'
WHILE @position <= DATALENGTH(@string)
   BEGIN
   SELECT ASCII(SUBSTRING(@string, @position, 1)),
      CHAR(ASCII(SUBSTRING(@string, @position, 1)))
    SET @position = @position + 1
   END
SET NOCOUNT OFF
GO

select top 1000
 m.[PKId]	
,[position]	= n.[N]
,[character]= substring(m.[markup], n.[N],1)
,[ascii]	= ascii( substring(m.[markup], n.[N],1) )
from
 markup m
 join	
 (select [N] from Tally where [N] <= 255 ) n
    on	
    ascii( substring(m.[content], n.[N],1) ) in 
	(
	select 
		[ascii]	= [N]
	from 
		Tally
	where 
		[n] not between ascii('A') and ascii('Z')
		and
		[n] not between ascii('a') and ascii('z')
		and
		[n] not between ascii('0') and ascii('9')
		and
		(
		'@.-_' not like '%' + char([n]) + '%'
		or
		char([n]) = '%'
		)
	)

SELECT '|' + CountryName + '|' FROM Country