Re: about hierarchical query

"Erpà" <palo_at_email.it> wrote in message
news:0fqkd.1950$n%2.1339_at_tornado.fastwebnet.it...
> yes, but
>
> select level, node
> from mytable
> start with parent_id is null
> connect by prior id = parent_id
> *returns all tree*
>
> select level, node
> from mytable
> where mycondition
> start with parent_id is null
> connect by prior id = parent_id
> *returns only leaves*:
> level node
> --------- ---------
> 3 C1
> 3 C5
> 3 C6
>
> I've tried:
> - where condition in "start with" statement is apply to roots
> - where condition in "connect by" statement is apply only to first level
> under roots
>
> How can I proceed?
> thanks
> Paolo
>
> IANAL_VISTA wrote:
>
> > Erpa <Erpa_at_email.it> wrote in news:cmt01j$2h8$1_at_newsread.albacom.net:
> >
> >
> >>hi all,
> >>how can I write an hierarchical query to view all level of my tree, but
> >>only the branches end with leaves that satisfy some conditions?
> >>
> >>
> >>for example, this is my tree in my hierarchical table:
> >>
> >> A1 A2
> >> / \ / \
> >> / \ / \
> >> B1 B2 B3 B4
> >> / \ / \ / \ / \
> >> C1 C2 C3 C4 C5 C6 C7 C8
> >>
> >>if only C1, C5 and C6 satisfy some conditions i wish to have this result
> >>from my query:
> >>
> >> A1 A2
> >> / /
> >> / /
> >> B1 B3
> >> / / \
> >> C1 C5 C6
> >>
> >>level node
> >>--------- ---------
> >>1 A1
> >>2 B1
> >>3 C1
> >>1 A2
> >>2 B3
> >>3 C5
> >>3 C6
> >>
> >>thanks for your help
> >>Paolo
> >>
> >
> >
> > CONNECT BY clause on SELECT

Google on CELKO NESTED SET MODEL Received on Wed Nov 10 2004 - 09:21:28 CST