birt一点一滴系列之级联参数创建

1、一级产品信息

select id , productgroup.groupname
from productgroup
union (select -1 as id, '所有的' as groupname from dual)

2、二级产品信息

select oldid,productname from products where groupid = ? 
UNION (SELECT -1 AS oldid, '所有的' as productname FROM DUAL)

3、创建级联参数

4、设置一级产品类别

5、设置二级产品类别

 

6、运行效果