Question

我有一张桌子。

+----------+
| Tools    |
+----------+
| Pencil   |
| Eraser   |
| Notebook |
| Pencil   |
| Notebook |
| Notebook |
+----------+

我可以将它转换成这样的东西吗？

+---------+----------+---------+
| No name | No name  | No Name | <-- column header
+---------+----------+---------+ 
| Pencil  | Notebook | Eraser  | <-- values
+---------+----------+---------+

尝试pivot查询，但我不认为我做对了。这些工具可能没有修复。我的意思是，也许他们会为它添加另一种工具。任何帮助将非常感激。感谢

Answer 1

declare @t table(tools varchar(50))

insert into @t values ('Pencil'),('Eraser'),('Notebook'),('Pencil'),('Notebook'),('Notebook')

select * from @t

SELECT *
FROM ( 
    select 
    tools
    from @t 
    group by tools
) AS t
PIVOT
(
  MAX(tools)
  FOR tools IN(Pencil, Eraser, Notebook)
) AS p;

如何将字段值设置为列

1 个答案: