使用动态透视隐藏所有空值的行

Question

我问了一个问题并得到了答案，因为我必须使用 Dynamic Pivot Link to Question 并且我得到了很大的帮助。现在，我试图摆脱所有空值的行，但我做不到。

*请注意当前结果的列标题应该是第 01 部分、第 ABC 部分和第 03 部分（不是如图所示的 0）

WHERE SubPart IS NOT NULL/ WHERE  Quantity IS NOT NULL 

但它不起作用（好吧，它仍然查询但使用空值）

在 FROM 和 from 语句之后

DECLARE @columns NVARCHAR(MAX)      
       ,@sql NVARCHAR(MAX)

SET @columns = N''
--Get column names for entire pivoting
SELECT @columns += N', ' + QUOTENAME(SpreadCol)
  FROM (select distinct Part_Number as SpreadCol 
        from test
       ) AS T
--select @columns
SET @sql = N'
SELECT SubPart, ' + STUFF(@columns, 1, 2, '') + '
FROM
(select SubPart , Part_Number as SpreadCol ,  Quantity
from test ) as D
PIVOT
(
  sum(Quantity) FOR SpreadCol IN ('
  + STUFF(REPLACE(@columns, ', [', ',['), 1, 1, '')
  + ')
) AS Pivot1
'
--select @sql

EXEC sp_executesql @sql

Answer 1

您需要将 where 条件添加到内部查询中，用作 pivot 和列列表查询的源

DECLARE @columns NVARCHAR(MAX)      
       ,@sql NVARCHAR(MAX)

SET @columns = N''
--Get column names for entire pivoting
SELECT @columns += N', ' + QUOTENAME(SpreadCol)
  FROM (select distinct Part_Number as SpreadCol 
        from test WHERE  Quantity IS NOT NULL 
       ) AS T
--select @columns
SET @sql = N'
SELECT SubPart, ' + STUFF(@columns, 1, 2, '') + '
FROM
(select SubPart , Part_Number as SpreadCol ,  Quantity
from test WHERE  Quantity IS NOT NULL  ) as D
PIVOT
(
  sum(Quantity) FOR SpreadCol IN ('
  + STUFF(REPLACE(@columns, ', [', ',['), 1, 1, '')
  + ')
) AS Pivot1
'