交换一些行转换成列在SQL Server 2008

Question

另外一个为你的SQL Server大师......

我有一个表是这样的...

AccountManager | Action    | Count 
----------------------------------------------------- 
Joe   | Client Negotiation | 10 
Bloggs   | Closing    | 1 
Aunty   | Email     | 12 
Marie   | Preparing Contract | 32 

的动作栏可以有许多不同类型的可能不一定是固定的状态。

我需要的输出为以下几点：

AccountManager | Client Negotiation | Closing | Email | Preparing Contract 
-------------------------------------------------------------------------- 
Joe   | 10     | 0  | 0  | 0 
Bloggs   | 0     | 1  | 0  | 0 
Aunty   | 0     | 0  | 12 | 0 
Marie   | 0     | 0  | 0  | 32 

这怎么可能实现？帮帮我！

Answer 1

按照下面的演练

http://www.tsqltutorials.com/pivot.php

Answer 2

这最好由您正在使用的报告工具处理。寻找“数据透视表”。

Answer 3

select [AccountManager], ISNULL([Email],0) as [Email], ISNULL([Closing],0) as [Closing], ISNULL([Preparing Contact],0) as [Preparing Contact], ISNULL([Client Negotiation],0) as [Client Negotiation] from 
    (SELECT * FROM TestPivot) as SourceTable 

Pivot 
(
    SUM([Count]) 
    For [Action] in ([Email], [Closing], [Preparing Contact], [Client Negotiation]) 
) as PivotedColumns 
order by [Email] desc, [Closing] desc, [Preparing Contact] desc, [Client Negotiation] desc 

Answer 4

也许是这样的：

首先，测试数据：

CREATE TABLE #tbl (AccountManager VARCHAR(100), Action VARCHAR(100),Count INT) 

INSERT INTO #tbl 
VALUES 
    ('Joe','Client Negotiation',10), 
    ('Bloggs','Closing',1), 
    ('Aunty','Email',12), 
    ('Marie','Preparing Contract',32) 

如果您知道列是静态的。然后，你可以这样做：

SELECT 
    AccountManager, 
    ISNULL([Client Negotiation],0) AS [Client Negotiation], 
    ISNULL([Closing],0) AS [Closing], 
    ISNULL([Email],0) AS [Email], 
    ISNULL([Preparing Contract],0) AS [Preparing Contract] 
FROM 
(
SELECT 
    tbl.AccountManager, 
    tbl.Action, 
    tbl.Count 
FROM 
    #tbl AS tbl 
) AS p 
PIVOT 
(
    SUM([Count]) 
    FOR [Action] IN([Client Negotiation],[Closing],[Email],[Preparing Contract]) 
) AS pvt 

否则，你必须做一个动态的支点是这样的：

首先，独特的列名：

DECLARE @cols VARCHAR(MAX), 
     @colsWithIsNull VARCHAR(MAX) 
;WITH CTE 
AS 
(
    SELECT 
     ROW_Number() OVER(PARTITION BY tbl.Action ORDER BY tbl.Action) AS iRank, 
     tbl.Action 
    FROM 
     #tbl AS tbl 
) 
SELECT @cols = COALESCE(@cols + ','+QUOTENAME(Action), 
        QUOTENAME(Action)), 
     @colsWithIsNull=COALESCE(@colsWithIsNull + ',ISNULL('+QUOTENAME(Action)+',0) AS '+QUOTENAME(Action), 
        'ISNULL('+QUOTENAME(Action)+',0) AS '+QUOTENAME(Action)) 
FROM 
    CTE 
WHERE 
    iRank=1 

然后动态支点是这样的：

DECLARE @query NVARCHAR(4000)= 
N'SELECT 
    AccountManager, 
    '+@colsWithIsNull+' 
FROM 
(
SELECT 
    tbl.AccountManager, 
    tbl.Action, 
    tbl.Count 
FROM 
    #tbl AS tbl 
) AS p 
PIVOT 
(
    SUM([Count]) 
    FOR [Action] IN('+@cols+') 
) AS pvt' 

EXECUTE(@query) 

然后在我的情况下，我会放下临时表：

DROP TABLE #tbl