I need to create a rule only for alphabet characters
i used the following Wildcard character sequences but didn't work !
Double negative like
WHERE SomeCol NOT LIKE '%[^a-z]%'
Ignoring the first NOT, this means "match any character not in the range a to z".
Then, you reverse using the first NOT which means "don't match any character not in the range a to z"
Edit, after comment
LIKE '%[a-z]%' means "find any single character between a-z. So
111s222 is matched for example because
s matches in this like.