Linq to Sql/entity Join

标签：

?

inner join 模板：

1. var query = from x in db.T1
2. ????????????join y in db.T2
3. ????????????on x.Id equals y.Id
4. ????????????select x;

?

left join模板：

?

1. var query = from x in db.T1
2. ????????????join y in db.T2
3. ????????????on x.yId equals y.Id into temp
4. ????????????from ret in temp.DefalutIfEmpty()
5. ????????????select new{ x.Id, ret};

?

经常记不住,这次把它记下来!

Linq to Sql/entity Join

标签：

原文地址：http://www.cnblogs.com/pengzhen/p/4522521.html