can I perform a query inside of JPA entity to get back a single column

Question

I have a dumb question. It would be great if this could be done, but I am not holding my breath.

I need a single column from a table linked to my JPA entity to be a c

Answer 1

Suppose a Category has many products:

select product.name from Category c inner join c.products product where ...

If that's not what you want, please show an example in your question.