sql server neighbor list records exchange (Mono twenty-two exchange)

Bo asked to see the park in a blog this question: a table has two fields id and name, id is a continuous non-empty non-repetition, want to exchange value of the adjacent table name records (single and double twenty-two exchange ).

Further, if the last row does not correspond to a single matching record, then the next row, not the last update individual rows.

Feel a bit mean, I try to achieve it (SQL Server), and recorded.

Create a diosos table.

- If the table exists, it is deleted table 
IF  object_id (N ' diosos ' , N ' the U- ' ) IS  Not  null  drop  Table diosos;
 - Create Table 
Create  Table diosos (ID int , name VARCHAR ( 64 ));

Inserting data into a table.

-- 插入数据
insert into diosos(id, name) values(1, 'one');
insert into diosos(id, name) values(2, 'two');
insert into diosos(id, name) values(3, 'three');
insert into diosos(id, name) values(4, 'four');
insert into diosos(id, name) values(5, 'five');
insert into diosos(id, name) values(6, 'six');
insert into diosos(id, name) values(7, 'seven');
insert into diosos(id, name) values(8, 'eight');
insert into diosos(id, name) values(9, 'nine');

Query data is not out to see for the first.

- query data 
the SELECT  *  from diosos;

Achieve neighbor list records exchange (Mono twenty-two exchange), the principle is based on the name and the parity judgment id modulo subtraction do id adjacent left outer association of updating rows.

- Update, between two exchange, the exchange is not unpaired 
Update D1 SET d1.name = d2.name
 from diosos D1
 left  the Join diosos D2
 ON (d1.id % 2  =  0  and d1.id = (d2.id +  . 1 ) ) or (d1.id % 2  =  . 1  and d1.id = (d2.id -  . 1 ))
 WHERE d2.name IS  Not  null ;

Query again, successfully.

- re-query 
the SELECT  *  from diosos;

Still quite good fun, although I think there is almost no actual scene, ha ha ha.

"You have to believe in this world someone will know the pain behind you, and people are willing to give you a brilliant throughout the season."