SQL移调行

Question

柱

我已经从一个表中的以下样品

+-------------+---+------------------+--+ 
| Heading1 | 2 | 3    | | 
+-------------+---+------------------+--+ 
| Cats  | d | 1    | | 
| Cats  | e | 13/01/2000 12:29 | | 
| Dogs  | s | 1    | | 
| Dogs  | e | 13/01/2000 12:29 | | 
| Frogs  | d | 1    | | 
| Frogs  | e | 13/01/2000 12:29 | | 
| Cows  | d | 1    | | 
| Cows  | e | 13/01/2000 12:29 | | 
+-------------+---+------------------+--+ 

我想列2的行是不同的标题和含有一排用于从图1个3 A和呈现这样的每个唯一值：

+-----------+------+------------------+------+ 
| Headings: | d |  e   | s | 
+-----------+------+------------------+------+ 
| Cats  | 1 | 13/01/2000 12:29 | Null | 
| Dogs  | Null | 13/01/2000 12:29 | 1 | 
| Frogs  | 1 | 13/01/2000 12:29 | Null | 
| Cows  | 1 | 13/01/2000 12:29 | Null | 
+-----------+------+------------------+------+ 

任何想法GOOGLE了它，并与这一个:)

EDIT失去意志：我没有提到的事实是什么成为列在这个CAS动态即e d，e，s可以是任何东西，真的很感谢答案。

感谢所有

Answer 1

可以移调两种rows to columns方式

方法1：Conditional Aggregate

SQL FIDDLE DEMO

SELECT Heading1, 
     Max(CASE WHEN [2] = 'd' THEN [3] END) 'd', 
     Max(CASE WHEN [2] = 'e' THEN [3] END) 'e', 
     Max(CASE WHEN [2] = 's' THEN [3] END) 's' 
FROM <tablename> 
GROUP BY Heading1 

方法2：Pivot

SQL FIDDLE DEMO

SELECT * 
FROM (SELECT * 
     FROM <tablename>) a 
     PIVOT (Max([3]) 
      FOR [2] IN ([d], 
         [e], 
         [s])) piv 

Answer 2

什么你正在寻找被称为PIVOT。它允许您将行转换为列。

Answer 3

SELECT Heading1, 
    (SELECT Heading3 FROM Table2 b WHERE a.Heading1 = b.Heading1 and b.Heading2 = 'd') as d, 
    (SELECT Heading3 FROM Table2 b WHERE a.Heading1 = b.Heading1 and b.Heading2 = 'e') as e, 
    (SELECT Heading3 FROM Table2 b WHERE a.Heading1 = b.Heading1 and b.Heading2 = 's') as s 
INTO Table2 
FROM Table1 a 
GROUP BY Heading1