SELECT rub2.id AS id_rub2, rub1.rub1, rub2.rub2, rub2.meta_title, rub2.meta_description, rub2.meta_keywords
FROM rub2
LEFT JOIN rub1 ON rub2.id_rub1 = rub1.id
WHERE rub2.rub2_url='demaquillage' AND rub2.actif='1' AND
rub1.rub1_url='maquillage' AND rub1.actif='1'
GET_R1 : maquillage
GET_r2 :demaquillage
r1=maquillage&r2=demaquillage
/maquillage/demaquillage.html