用参数为空选择全部的思路实现

${if(company_name='汇总',"and company_id in ('W10','DDE','V85V83','W68')","and COMPANY_id=(select company_id from FR_FIN_INPUT_COMPANY_DIC where company_name='"+ company_name +"')")}

group by substr(ym,1,4),substr(ym,6,2)

使用关联数据集呢，两个数据集，参数A=1用那个数据集，等于二用哪个数据集

https://help.fanruan.com/finereport/doc-view-125.html

这样看你想怎么合并

select substr(ym,1,4) year,substr(ym,5,2) mon,MONTH_AMOUNT zyywsr from FR_FIN_INPUT_PROFIT WHERE COMPANY_id='W10' and substr(ym,1,4)=2019

and PROJECT_ID='0101'  ---今年主营业务收入

order by mon

union all

select substr(ym,1,4) year,substr(ym,5,2) mon,sum(MONTH_AMOUNT) zyywsr from FR_FIN_INPUT_PROFIT where substr(ym,1,4)=2019

and PROJECT_ID='0101' and company_id in ('W10','DDE','V85V83','W68')

group by substr(ym,1,4),substr(ym,5,2)

order by mon

你这个没法合并，要实现你的功能，可以参考

根据参数查看不同报表-https://help.fanruan.com/finereport/doc-view-407.html

两个select，union all 在一起合并

思路

 select * from (SELECT  '单个公司'  as a  union all  select '汇总' as a  ) where a = ${下拉框}