"Unknown column 'app_show_on_top' in 'where clause'" :: SELECT SQL_CALC_FOUND_ROWS A.*,
            C.clinic_status, C.clinic_site, C.clinic_code, D.city_uid, D.city_id, C.clinic_vip, C.clinic_covid
            FROM smrt_apps_child2017 AS A
            LEFT JOIN smrt_clinics AS C ON A.clinic_id = C.clinic_bitrix_id
            LEFT JOIN smrt_city_db AS D ON C.clinic_city_id = D.city_id
            WHERE app_status = '0' AND app_show_on_top = '0' AND app_year = 2017  AND app_net = '1'
            ORDER BY app_rate DESC, app_date LIMIT 0, 100<br /><br />