Question

我在SQL Server中有这样的数据：

   floor |  Apartment
   1           1 
   1           2 
   1           3 
   2           4 
   2           5 
   2           6

因为一层有3套公寓，我想将Apartment列排序或转换成像流动的一排

   4   |   5   |   6 
   1   |   2   |   3

Answer 1

SQL Fiddle

MS SQL Server 2012架构设置：

create table YourTable
(
  Floor int,
  Apartment int
)

go

insert into YourTable values
(   1,           1),
(   1,           2),
(   1,           3),
(   2,           4),
(   2,           5),
(   2,           6)

查询1 ：

select P.Floor,
       P.[1] as Room1,
       P.[2] as Room2,
       P.[3] as Room3
from (
     select Floor,
            Apartment,
            row_number() over(partition by Floor order by Apartment) as rn
     from YourTable
     ) as T
pivot(min(T.Apartment) for T.rn in ([1], [2], [3])) as P

<强> Results ：

| FLOOR | ROOM1 | ROOM2 | ROOM3 |
|-------|-------|-------|-------|
|     1 |     1 |     2 |     3 |
|     2 |     4 |     5 |     6 |

将列排序为多行

1 个答案: