@ -714,7 +714,8 @@ public class BaseRepositoryImpl<T, ID extends Serializable> extends SimpleJpaRep
@Override
public double findByHqlDouble(String hql) {
return entityManager.createQuery(hql,Double.class).getSingleResult();
Double result = entityManager.createQuery(hql,Double.class).getSingleResult();
return result == null ? 0 : result;
}