SQL 转 Linq

Question

select a.column1,a.column2,(select t.column3 from table2 as t where t.id=a.id) as column3,(select b.column4 from table3 as b where b.id=a.id) as colunm4from table1 as a 这样的SQL查询用Linq怎么写啊？

Answer 1

var query= from a in db.table1 select new {a.column1,a.column2,

column3= db.table2.FirstOrDefault(f=>f.id==a.id).column3 ,

column4= db.table3.FirstOrDefault(f=>f.id==a.id).column4 ,

};