根据行值创建一个字段（数据透视？）

Question

我有一个查询返回多行结果。我的查询如下：

select * from containertbl where bol_key = 236377502 

我的结果是这样的：

我想对于结果看起来像这样

我曾尝试数据透视表（并进行了多次尝试，但从未得到任何结果），但我不希望该值是字段名称。此外，容器数量未知。

非常感谢您的帮助！

Answer 1

我认为动态SQL是在这种情况下唯一的方法，因为确切数量的枢轴列是未知的。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