1、sql语句:
select * from Users u join Teachers t
on u.UserID==t.TeacherID and u.Name=t.Name
2、linq写法:
1)、方法一:
将多个字段的比较,new 一个对象进行比较;
注意:对象的属性名要保持一致;
var userInfos = from u in db.Users join t in db.Teachers
on new { u.UserID , u.Name } equals new { UserID = t.TeacherID,t.Name }
select new { ID=u.UserID, t.Name };
2)、方法二:
var userInfos = from u in db.Users
from t in db.Teachers
where u.UserID == t.TeacherID && u.Name == t.Name
select new { ID=u.UserID, t.Name };