“MySQL 5.6 RECURATION HIÉRARCHIQUE” Réponses codées

MySQL 5.6 RECURATION HIÉRARCHIQUE

select  id,
        name,
        parent_id 
from    (select * from products
         order by parent_id, id) products_sorted,
        (select @pv := '19') initialisation
where   find_in_set(parent_id, @pv)
and     length(@pv := concat(@pv, ',', id))