Konvertering af MySQL-kode til Access:GROUP_CONCAT og en tredobbelt JOIN

Det mest almindeligt citerede adgangsalternativ til MySQL GROUP_CONCAT() funktionen er Allen Brownes ConcatRelated() funktion, tilgængelig her .

Med hensyn til parenteser omkring JOINs, ja, Access SQL er nøjeregnende med dem. I stedet for

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

prøv

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