Hi,
I would like to rewrite "select * from role r left outer join actor a on (r.id 
= a.roleid and a.personid=1);" in a ejb-ql form.

Some more background info:
the query intends to serve a usecase for retrieving a many to many relation, 
modeled in 2 one-to-mny relations and a join table:
a person may performing many roles.
a role might be performed by many persons.
a person having a role is an actor.
database shows like:

  | create table person (id, number(10));
  | create table role (id, number(10));
  | create table actor (personid Number(10), roleid number(10));
  | 
The query should retrieve ALL roles with, the associated actors if present for 
a given person.
I first tried a outer left join query together with a where statement but that 
failed, because not all roles where retrieved or more than the present actors 
for the particular subject where retrieved. In oracle the query above does 
what's expected, but i see no way to have a double condition in the join 
statement in ejb-ql, i'm not even sure its ansi sql.
Any help would be appreciated.
regards,
Jeroen.


View the original post : 
http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4086719#4086719

Reply to the post : 
http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4086719
_______________________________________________
jboss-user mailing list
[email protected]
https://lists.jboss.org/mailman/listinfo/jboss-user

Reply via email to