Firstly, let me say that I know that http://sphinxsearch.com/docs/current.html#conf-sql-attr-string says \"strings can only be used for storage and retrieval\" and that \"They c
As I stated in my last comment, you could try defining a field (http://sphinxsearch.com/docs/current.html#conf-sql-field-string).
You could do a WHERE MATCH((@mail_street_name '*box*'))
WHERE MATCH((@mail_street_name '*box*'))
And according to the documentation, you are still able to sort on it also