查询中的Hibernate查询语言语法错误

Question

我的Hibernate查询是：

SELECT targets from " + TargetSystem.class.getName()
                + " targets join fetch targets.targetSystemType type"
                + " where type.targetSystemTypeName = '"
                + Constants.Constant_TARGET_SYSTEM_TYPE + "'"

我尝试执行查询时遇到的错误在

之下

You have an error in your SQL syntax; check the manual that corresponds to 
your MySQL server version for the right syntax to use near 
'TargetSystem targets join fetch targets.targetSystemType ty' at line 1

注意：targetSystemTypeName是实体中列的Java名称，targetSystemType是外键。

查询执行代码：

Query executeQuery = entityManager.createNativeQuery(query,
                TargetSystem.class);
        @SuppressWarnings("unchecked")
        List<TargetSystem> targetSystems = executeQuery.getResultList();

我无法弄清楚错误是什么