clarify semantics of query with no 'select' in documentation

documentation/src/main/asciidoc/userguide/chapters/query/hql/QueryLanguage.adoc

@@ -104,22 +104,32 @@ For example, the simplest query in HQL has no `select` clause at all:
 
 [[hql-select-simplest-example]]
 ====
-[source, SQL, indent=0]
+[source, JAVA, indent=0]
 ----
 include::{sourcedir}/HQLTest.java[tags=hql-select-simplest-example]
 ----
 ====
 
+We don't necessarily _recommend_ leaving off the `select` list.
+
 [NOTE]
 ====
 JPQL requires a `select` clause, whereas HQL does not.
+
 Naturally, the previous query may be written with a `select` clause:
 
-[source, SQL, indent=0]
+[source, JAVA, indent=0]
 ----
 include::{sourcedir}/HQLTest.java[tags=hql-select-simplest-jpql-example]
 ----
 
+When there's no explicit `select` clause, the select list is implied by the result type of the query:
+
+[source, JAVA, indent=0]
+----
+include::{sourcedir}/HQLTest.java[tags=hql-select-no-from]
+----
+
 For complicated queries, it's probably best to explicitly specify a `select` list.
 ====
 
@@ -142,7 +152,7 @@ Looking carefully at the BNF given above, you might notice that the `select` lis
 Of course, standard SQL, and JPQL, require that the `select` list comes at the beginning.
 But it's more natural to put it last:
 
-[source, SQL, indent=0]
+[source, JAVA, indent=0]
 ----
 include::{sourcedir}/HQLTest.java[tags=hql-select-last-example]
 ----
@@ -169,7 +179,7 @@ For example:
 
 [[hql-update-example]]
 ====
-[source, SQL, indent=0]
+[source, JAVA, indent=0]
 ----
 include::{sourcedir}/HQLTest.java[tags=hql-update-example]
 ----

documentation/src/test/java/org/hibernate/userguide/hql/HQLTest.java

@@ -155,7 +155,6 @@ public class HQLTest extends BaseEntityManagerFunctionalTestCase {
 
 	@Test
 	public void test_hql_select_simplest_example() {
-
 		doInJPA(this::entityManagerFactory, entityManager -> {
 			Session session = entityManager.unwrap(Session.class);
 			List<Object> objects = session.createQuery(
@@ -199,6 +198,33 @@ public class HQLTest extends BaseEntityManagerFunctionalTestCase {
 		});
 	}
 
+	@Test
+	public void test_hql_select_no_from() {
+		doInJPA(this::entityManagerFactory, entityManager -> {
+			Session session = entityManager.unwrap(Session.class);
+			//tag::hql-select-no-from[]
+
+			// result type Person, only the Person selected
+			List<Person> persons = session.createQuery(
+				"from Person join phones", Person.class)
+				.getResultList();
+			for (Person person: persons) {
+				//...
+			}
+
+			// result type Object[], both Person and Phone selected
+			List<Object[]> personsWithPhones = session.createQuery(
+				"from Person join phones", Object[].class)
+				.getResultList();
+			for (Object[] personWithPhone: personsWithPhones) {
+				Person p = (Person) personWithPhone[0];
+				Phone ph = (Phone) personWithPhone[1];
+				//...
+			}
+			//end::hql-select-no-from[]
+		});
+	}
+
 	@Test
 	public void hql_update_example() {
 		doInJPA(this::entityManagerFactory, entityManager -> {