L'alternative Access la plus fréquemment citée à MySQL GROUP_CONCAT() la fonction est ConcatRelated() d'Allen Browne fonction, disponible ici
.
En ce qui concerne les parenthèses autour des JOIN, oui, Access SQL est pointilleux à ce sujet. Au lieu de
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
essayez
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
