If you're using JPA/Hibernate to perform SQL queries, then you're using the wrong tool. Hibernate is an ORM, and you're supposed to map tables to entities. That's the whole point of JPA. I you just want to perform SQL queries, use JDBC (and Spring's JdbcTemplate for example)

Once table1 and table2 are mapped to entities (let's call these entities T1 and T2), you won't need these SQL queries anymore, because JPQL is able to select only some fields of the entities. Your query could the look like this (depending on the association between t1 and t2):

select t1.col1, t2.col5 from T1 t1 join t1.t2 t2

And you would just have to iterate over the result (a list of Object[]) to build your results (which is a DTO and not a mapped entity) :

List<Object[]> rows = (List<Object[]>) query.list();
List<Result> listOfResults = new ArrayList<Result>(rows.size);
for (Object[] row : rows) {
    listOfResults.add(new Result((String) row[0], (String) row[1]));
}