sphinx search issue

source city {
        type            =       mysql
        sql_host        =       localhost
        sql_user        =       root
        sql_pass        =       password
        sql_db          =       database

        sql_query                               = \
                SELECT id,name,cuisine, location,tag  \
                FROM city_search

        sql_query_info                  = SELECT *  FROM city_search WHERE id=$id
}

index city {
        source          =       city
        path            =       /usr/local/sphinx/var/data/city
        charset_type    =       utf-8
        morphology      =       stem_en
        min_stemming_len =      4
        min_word_len    =       3
        min_prefix_len  =       3
        enable_star     =       1
}