有人可以帮忙在c#中将以下sql转换为linq吗?
select s.SYSTEM_NAME,
r.RESET_CODE,
COUNT(v.reset_code)
from (select distinct system_name
from tbl) s
cross join (select distinct reset_code
from tbl) r
left join tbl v on v.SYSTEM_NAME = s.SYSTEM_NAME
and v.RESET_CODE=r.RESET_CODE
group by s.SYSTEM_NAME,r.RESET_CODE