根據行值創建一個字段（數據透視？）

Question

我有一個查詢返回多行結果。我的查詢如下：

select * from containertbl where bol_key = 236377502 

我的結果是這樣的：

我想對於結果看起來像這樣

我曾嘗試數據透視表（並進行了多次嘗試，但從未得到任何結果），但我不希望該值是字段名稱。此外，容器數量未知。

非常感謝您的幫助！

Answer 1

我認爲動態SQL是在這種情況下唯一的方法，因爲確切數量的樞軸列是未知的。你不妨看看here：

DECLARE @query AS NVARCHAR(MAX) 
DECLARE @ColumnName AS NVARCHAR(MAX) 

-- A nested query is used here to generate the required sequence for the column names of the 
-- pivoted columns, i.e. [container1],[container2],[container3],[container4],[container5],[container6] etc. 
SELECT @ColumnName= ISNULL(@ColumnName + ',','') + QUOTENAME(PivotColumnName) 
FROM (SELECT bol_key, containerId, 'container' + CONVERT(VARCHAR(10), rn) AS PivotColumnName 
FROM (
    SELECT bol_key, containerId, ROW_NUMBER() OVER (PARTITION BY bol_key ORDER BY containerId) AS rn 
    FROM containertbl 
) t) s 

--Prepare the PIVOT query using the columns names calculated 
SET @query = 
    N'SELECT bol_key, ' + @ColumnName + ' 
    FROM (SELECT bol_key, containerId,' + CHAR(39) + 'container' + CHAR(39) + ' + CONVERT(VARCHAR(10), rn) AS PivotColumnName 
      FROM (
      SELECT bol_key, containerId, ROW_NUMBER() OVER (PARTITION BY bol_key ORDER BY containerId) AS rn 
      FROM containertbl) t) s  
    PIVOT(MAX(containerId) 
      FOR PivotColumnName IN (' + @ColumnName + ')) AS PvtTable' 

--Execute the dynamic pivot query 
EXEC sp_executesql @query 

SQL Fiddle here