Expression generation

Question

How do I build TopLink expression for the following query in one transaction?
Select * from employee where emp_id in (select emp_id from address);
Please let me know.
Thanks in Advance.

Answer 1

Don definitely answered your question, but I am just unsure why you want that sql statement.
I would like to suggest an alternative solution, and if i am missing something, would appreciate the feedback.
Judging by the sql statement the following would work, and avoid the subquery.
select emp.* from employee emp, address add
where emp.emp_id = add.emp_id
It is not clear whether the relationship is 1:1 or 1:m between employees and addresses, but the resulting query could look like one of the following:
(1:1)
List employees = session.readAllObjects(Employee.class, new ExpressionBuilder().get("mAddress").notNull());
(1:m)
List employees = session.readAllObjects(Employee.class, new ExpressionBuilder().anyOf("mAddresses").notNull());
If you were using a simple case to get info on subqueries then ignore this, otherwise I hope these are a couple other examples.
craig