MySQL GROUP_CONCAT()
に代わる最も一般的に引用されているAccess 関数はAllenBrowneのConcatRelated()
です。 関数、利用可能ここ
。
JOINを囲む括弧については、はい、AccessSQLはそれらについてうるさいです。代わりに
FROM
actor AS a
LEFT JOIN film_actor AS fa ON a.actor_id = fa.actor_id
LEFT JOIN film_category AS fc ON fa.film_id = fc.film_id
LEFT JOIN category AS c ON fc.category_id = c.category_id
試してみてください
FROM
(
(
actor AS a
LEFT JOIN
film_actor AS fa
ON a.actor_id = fa.actor_id
)
LEFT JOIN
film_category AS fc
ON fa.film_id = fc.film_id
)
LEFT JOIN
category AS c
ON fc.category_id = c.category_id