Sql sql = Sqls.create("SELECT m.* FROM master m JOIN detail d ON m.d_id=d.d_id WHERE d.name='aa'");
sql.setCallback(Sqls.callback.entities());
sql.setEntity(dao.getEntity(Master.class));
dao.execute(sql);
List list = sql.getList(Master.class);

list只能查到Mster对象，Master关联的实体Detail为空。。。