grammar
into identifier
effect
Accept part of the result of the query and give it a name
The result can be used as a collection to continue the query
case
var student2 = new[]
{
new {
Name="小黑",ID=1},
new {
Name="小宝",ID=2},
};
var student3 = new[]
{
new {
Class="语文",ID=1},
new {
Class="数学",ID=1},
new {
Class="英语",ID=0}
};
var result2 = from s in student2
join s2 in student3 on s.ID equals s2.ID
into students//students是student3中符合联结条件的集合 不包含studnet2中的元素
from s3 in students
select s3.Class;
foreach (var item in result2)
{
Debug.Log(item);
}
student2
| Name | ID |
|---|---|
| little black | 1 |
| little treasure | 2 |
student3
| Class | ID |
|---|---|
| language | 1 |
| math | 1 |
| English | 0 |
after linking
| Name | ID | Class |
|---|---|---|
| little black | 1 | math |
| little black | 1 | language |
query continuation results students
| ID | Class |
|---|---|
| language | 1 |
| math | 1 |