Comments on: Selecting a 'pruned tree' with selected nodes and all their ancestors – Hierarchical SQL Queries and Bottom-Up Trees

By: Dan Sobrante

Dan Sobrante — Thu, 15 Mar 2007 20:58:32 +0000

I tried your initial query on SQL PLus under Oracle 9i, I create a table called emp with some test data.
select lpad(‘+’,3*(level-1))||ename||’(‘||empno||’)’ Employee
from emp
connect
by prior empno = mgr
start
with mgr is null

The result set shows the emp up to the last level, meaning it repeats those employees who have a mgr, while your result set above only do this one time, under the main tree. Any advise?

By: Lucas Jellema

Lucas Jellema — Thu, 29 Jun 2006 07:54:18 +0000

Donna,

There are no 10g features used in these queries. SYS_CONNECT_BY_PATH and the WITH clause are the two most recent features and both should be in your 9.2 database.

Can you show the SQL that you are trying to execute and that does not work? By the way: if you run the SQL directly in SQL*Plus, does it then fail too?

best regards,

Lucas

By: Donna Oliver

Donna Oliver — Wed, 28 Jun 2006 18:35:38 +0000

We are currently running forms 6.0 (c/s) on an Oracle 9.2. I’m trying to “prune” a tree but can’t get it to work right. Is the above logic only available with 10?

Thanks.