<code>
with finanImpact as (
select EXTRACT(year from fiwm.create_dt) as years, m.code as mcode, sum(fiwm.rate) as rate from MASTER.financial_impact_wfins_mapping fiwm
inner join MASTER.wf_instance wf on wf.sysid=fiwm.wf_instance and wf.template_id=4
inner join MASTER.wf_data_cr wdc on wdc.instance_id=fiwm.wf_instance
inner join PARAMETER.module m on m.sysid=wdc.module and m.sysid in (4,15,6)
group by EXTRACT(year from fiwm.create_dt),m.code
union (
select null, m1.code,0 from parameter.module m1 where m1.sysid in (4,15,6)
minus
select null, m.code as mcode, 0 from MASTER.financial_impact_wfins_mapping fiwm
inner join MASTER.wf_instance wf on wf.sysid=fiwm.wf_instance and wf.template_id=4
inner join MASTER.wf_data_cr wdc on wdc.instance_id=fiwm.wf_instance
inner join PARAMETER.module m on m.sysid=wdc.module and m.sysid in (4,15,6)
group by EXTRACT(year from fiwm.create_dt),m.code
)
)


select fi.years, fi.mcode, fi.rate from finanImpact fi

union
(
 SELECT LEVEL+2008-1,'',0 AS ID
  FROM DUAL
  CONNECT BY LEVEL <= 2012-2008+1
  minus(
  select distinct lfi.years,'',0 from finanImpact lfi
  )
)
</code>

returned result:
=========================
2008	null	0
2009	null	0
2010	EB	34640
2010	GOF	8660
2011	EB	103920
2011	GOF	12990
2012	null	0
null	ASD	0
=========================

goal:
=========================
2008	ASD     0
2009	ASD	0
2010	EB	34640
2010	GOF	8660
2011	EB	103920
2011	GOF	12990
2012	ASD	0
=========================


As above, how to write a sql to achieve the "goal" section? Select rate for all selected modules and selected years no matter they got rate for that year or not.

The years and modules will be input by users, then the sql will return the sum rate for selected years and selected modules.
For instance, Find rate for ASD,EB,GOF modules from 2008 till 2012, as the above