Update RoyaltyRepository.java

Author: AnghelLeonard

HibernateSpringBootJpqlFunctionsParams/src/main/java/com/jpa/RoyaltyRepository.java

@@ -4,10 +4,12 @@
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.data.jpa.repository.Query;
 import org.springframework.stereotype.Repository;
+import org.springframework.transaction.annotation.Transactional;
 
 @Repository
 public interface RoyaltyRepository extends JpaRepository<Royalty, Long> {
 
+    @Transactional(readOnly = true)
     @Query(value = "select concat_ws(r.name, ?1, r.amount, ?2) from Royalty r WHERE r.id = 1")
     String fetchNameAndAmount(String symbol, Instant instant);
 }