On 04/07/10 11:00, Achilleas Mantzios wrote:
Column | Type | Modifiers
---------+-----------+---------------------------------------------------------------------------
id | integer | not null default
nextval(('public.paintgentypes_id_seq'::text)::regclass)
name | text | not null
parents | integer[] |
The parents of any node to the root, i.e. the path of any node to the root are
depicted as
parents[0] : immediate parent
parents[1] : immediate parent of the above parent
.....
parents[n] : root of the tree
what this schema gives?
(1) the parent branch in one select.
what else?
nothing.
compare it to a nested-tree
id | integer | NOT NULL
name | text | not null
parent | integer |
l | numeric
r | numeric
(1) parent branch in one select
(2) child subtree in one select
(it makes a sence!)
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