How to create a JPA query with LEFT OUTER JOIN

Question

I am starting to learn JPA, and have implemented an example with JPA query, based on the following native SQL that I tested in SQL Server:

SELECT f.StudentID         


        

Answer 1

If you have entities A and B without any relation between them and there is strictly 0 or 1 B for each A, you could do:

select a, (select b from B b where b.joinProperty = a.joinProperty) from A a

This would give you an Object[]{a,b} for a single result or List for multiple results.