SELECT country_name, raw.code AS brand_code, master_brand.name AS brand_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
WHERE country_name = '日本'
GROUP BY country_name, raw.code, master_brand.name
ORDER BY brand_name