Connect by problem on 11g

Question

Hello,
I'm having a problem when I use a Select that works on Oracle 10g but doesn't work on 11g.
My Oracle version is 11.2.0.0
The query is:
select LEVEL, struct.struct_version
from struct
connect by prior struct.component_version = struct.struct_version
and prior struct.component_presentation = struct.presentation
and prior struct.component_article = struct.article
start with struct.article = :article
and struct.presentation = :presentation
and struct.struct_version = :struct_version
The problem is that in 11g the query only returns the values of the level 1 (26 rows), but in the 10g the query returns all the levels (1,2 and 3) in a total of 72 rows.
The table "struct" have the same data in the two database versions.
what would be the problem?

Answer 1

Hello, thanks for the answer but my problem is caused by the connectors "and prior"
The connect by of my query is this:
connect by prior struct.component_version = struct.struct_version
and prior struct.component_presentation = struct.presentation
and prior struct.component_article = struct.article
if I only use one connect by like this:
connect by prior struct.component_article = struct.article
the query works fine... why it doesn't work in 11g when I use more "prior" connections in the select statement? remember that in 10g the query works fine with the same data in the table.
I can't see why the query doesn't works...