有一个关联删除需求：
$result = CusServiceModel::alias('cus')->JOIN('cus_website cusweb','cus.pid = cusweb.id')->where($where)->delete();

生成的如下语句，会提示失败，无法执行成功：
DELETE FROM cus_service cus INNER JOIN cus_website cusweb ON cus.pid=cusweb.id WHERE cus.id = 10 AND cusweb.admin_id = 2

需要在 DELETE后面跟上 cus_service 的别名 cus 即：
DELETE cus FROM cus_service cus INNER JOIN cus_website cusweb ON cus.pid=cusweb.id WHERE cus.id = 10 AND cusweb.admin_id = 2

请问最上面的模型删除语句应该如何修改才能delete 后面指定表名，，一定要用原生SQL语句执行吗？