处理顶级部门没有ComId

yanzhu-common/yanzhu-common-mapper/src/main/resources/mapper/system/SysDeptMapper.xml

@@ -28,7 +28,7 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
 	</resultMap>
 	
 	<sql id="selectDeptVo">
-        select d.dept_id, d.com_id, d.parent_id, d.ancestors, d.dept_name, d.dept_short_name, d.dept_code, d.dept_type, d.dept_infos, d.order_num, d.leader, d.phone, d.email, d.status, d.del_flag, d.create_by, d.create_time
+        select d.dept_id, ifnull(d.com_id,d.dept_id) com_id, d.parent_id, d.ancestors, d.dept_name, d.dept_short_name, d.dept_code, d.dept_type, d.dept_infos, d.order_num, d.leader, d.phone, d.email, d.status, d.del_flag, d.create_by, d.create_time
         from sys_dept d
     </sql>