SELECT country_name, master_brand.code AS brand_code, master_brand.name AS brand_name, SUM(IF(id IS NOT NULL,1,0)) AS cnt
FROM usedcar raw
RIGHT OUTER JOIN
( SELECT code, name, country_name FROM brand_master ) master_brand
ON
raw.code = master_brand.code
WHERE country_name = 'イギリス'
GROUP BY country_name, master_brand.code, master_brand.name
ORDER BY cnt