Linq的连表查询

var table1=from r in shiti.a()
                  from y in r.years
                  where y>2010
                  select new 
                 {
                   year=y,
                   name=r.FirstName
                 };
var table2=from t in shiti.b()
                  from y in t.years
                  where y>2010
                  select new 
                  {
                    year=y,
                    name=t.name
                  }
然后根据这两个查询再通过子句join t in table1 on r.years equals t.years
var tablesum=from r in table1 join t in table2 on r.years equals t.years
             select new 
             {
              years=r.year,
              teams=r.name,
              racer=t.name
             }