在SQL中将多行转换为多列

Question

我有这样的数据：

Team    Month   Count_of_Stores
  a      4       10
  b      4        4
  c      4        6
  a      5        8
  b      5       14
  e      5        9
  a      6        7
  b      6        3
  f      6        1

我努力获得这样的输出，将行转换为列：

团队月份Count_of_Stores团队月份Count_of_Stores团队月份Count_of_Stores a 4 10 a 5 8 a 6 7 b 4 4 b 5 14 b 6 3 c 4 6 e 5 9 f 6 1

我相信枢轴在这里应该有很大的帮助，但在这里适当的用法很困惑。任何帮助深表感谢。

Answer 1

我根据提供的数据推断团队关联。像下面这样的东西可以为你工作（演示：http://rextester.com/GQHPV34978）

CREATE TABLE temp
(
    [teamID] INT,
    [month] INT,
    [count_of_stores] INT
)

INSERT INTO temp
VALUES 
(1,4,10),
(2,4,4),
(3,4,6),
(1,5,8),
(2,5,14),
(3,5,9),
(1,6,7),
(2,6,3),
(3,6,1)

SELECT [teamID], 
    MAX(CASE WHEN MONTH = 4 THEN MONTH END )AS Month,
    MAX(CASE WHEN MONTH = 4 THEN count_of_stores END )  AS Count_of_Stores,
    MAX(CASE WHEN MONTH = 5 THEN MONTH END )AS Month,
    MAX(CASE WHEN MONTH = 5 THEN count_of_stores END )  AS Count_of_Stores ,
    MAX(CASE WHEN MONTH = 6 THEN MONTH END )AS Month,
    MAX(CASE WHEN MONTH = 6 THEN count_of_stores END )  AS Count_of_Stores 
FROM temp
GROUP BY teamID

根据新信息更新以下内容（演示：http://rextester.com/JIZQX61960）

create TABLE #temp
(
    [teamID] varchar,
    [month] INT,
    [count_of_stores] INT
)

INSERT INTO #temp
VALUES 
('a',4,10),
('b',4,4),
('c',4,6),
('a',5,8),
('b',5,14),
('e',5,9),
('a',6,7),
('b',6,3),
('f',6,1);


WITH monthGrouping AS
(
    SELECT row_number() over (partition by month order by month) as rn, [teamID], [month],[count_of_stores] FROM #temp
)

SELECT 
    MAX(CASE WHEN MONTH = 4 THEN [teamID] END )AS [teamID],
    MAX(CASE WHEN MONTH = 4 THEN MONTH END )AS Month,
    MAX(CASE WHEN MONTH = 4 THEN count_of_stores END )  AS Count_of_Stores,
    MAX(CASE WHEN MONTH = 5 THEN [teamID] END )AS [teamID],
    MAX(CASE WHEN MONTH = 5 THEN MONTH END )AS Month,
    MAX(CASE WHEN MONTH = 5 THEN count_of_stores END )  AS Count_of_Stores ,
    MAX(CASE WHEN MONTH = 6 THEN [teamID] END )AS [teamID],
    MAX(CASE WHEN MONTH = 6 THEN MONTH END )AS Month,
    MAX(CASE WHEN MONTH = 6 THEN count_of_stores END )  AS Count_of_Stores 
FROM monthGrouping
GROUP BY rn