//cls_a is defined by system framework, so we cannot change its definition publicvoid method_a();//add a new method_a(int) function//and prevent client s
我想连接2-3个数据来自数据库的列表和2个对象类型为数据的列表,如何从中获得实际的结果?ag.agent_id join clsin classificationsToList on cs.classification_id equals cls.classification_id
groupcs by new { cs.classifica