Problems with Views based on a Hierarchical Query

Question

Datamodeler 3.1.3.706 (SQL Dev 3.2.10.09):
When creating a view that utilizes a Hierarchical Query, the Query Builder encounters various difficulties:
When pasting in SQL code, if the view is saved without first clicking the update diagram button, the object in the view entity relationship diagram provides a faithful representation of the view without errors, but when reopening the view, the code is missing.
Simple Example using the classic emp table:
SELECT level lev
      , emp.*
   FROM emp
  CONNECT BY prior empno = mgr
  START WITH mgr        IS NULLIf the update diagram button is pushed to refresh the graphical view. It mangles the connect by clause and the view gets marked with a warning/error icon in the relationship diagram, but the now mangled code remains available on reopening the query builder.
Same code as above after clicking the Update Diagram button:
SELECT Level lev
, emp.*
   FROM emp
  CONNECT BYFurther issues are encountered if the query contains any of the CONNECT_BY_% hierarchical pseudo columns:
SELECT level
      , emp.*
      , connect_by_root emp.ename root_ename
   FROM emp
  CONNECT BY prior empno = mgr
  START WITH mgr        IS NULL;In this case pasting in the code and clicking either the Update Diagram button or the OK button results in an "Unexpected Token" parsing error.
These issues are encountered with both the Logical and Relational models.
Is this a known issue? I've searched this forum but haven't found any references to it.
Thanks,
Sentinel

Answer 1

Hi Sentinel,
I logged a bug for that.
You can try DM 3.3 it deals better with first problem, parsing of connect_by_root operator will pass if you don't use alias.
Philip