SELECT master_brand.code AS brand_code, master_brand.name AS brand_name, model, master_large_area.name AS large_area_name, COUNT(1) AS cnt
FROM usedcar raw
JOIN
( SELECT code, name, country_name FROM brand_master ) master_brand
ON
raw.code = master_brand.code
JOIN
( SELECT code, name, large_area_code FROM pref_master ) master_pref
ON
raw.shop_pref_code = master_pref.code
JOIN
( SELECT code, name FROM large_area_master ) master_large_area
ON
master_pref.large_area_code = master_large_area.code
WHERE master_brand.name = 'ポルシェ' AND model = 'ボクスター'
GROUP BY master_brand.code, master_brand.name, model, master_large_area.name
ORDER BY large_area_name