SELECT p.ID, p.post_title, t.name AS product_type
FROM wp_posts AS p
JOIN wp_term_relationships AS tr ON tr.object_id = p.id
JOIN wp_term_taxonomy AS tt ON tr.term_taxonomy_id=tt.term_taxonomy_id
JOIN wp_terms AS t ON t.term_id = tt.term_id
WHERE p.id = 111 AND tt.taxonomy = 'product_type'