SQL FORCE SORT根據包含的值從行生成的列

Question

我有一個要求，即將列轉換爲行的動態查詢的輸出，以確保只有具有值的列在沒有值的行之前生成。如何強制生成列的順序，以便第一列是包含特定字段的值的列，而在特定字段的末尾沒有生成特定字段值的列？

   insert into #PriceSheet 
     select ID, ProductID,SheetNumber ,SheetDesc ,MfgPriceCode,PriceZone 

    FROM ProductPrice 
    left join UNITS On SUOM = UOMID 

    select @colsUnpivot = stuff((select ','+quotename(C.name) 
     from tempdb.sys.columns as C 
     where C.object_id = object_id('tempdb..#PricingSheet') and 
       C.name LIKE '%%' 
     for xml path('')), 1, 1, '') 

select @colsPivot = STUFF((SELECT ',' 
         + quotename(c.name 
         + cast(t.rn as varchar(10))) 
        from 
        (
         select row_number() over(partition by ProductID 
               order by ProductID) rn 
         from #PriceSheet 
        ) t 
        cross apply 
         tempdb.sys.columns as C 
        where C.object_id = object_id('tempdb..#PricingSheet') 
        and C.name Not in ('CreateDate', 'LastModifiedDate') 
        group by c.name, t.rn 
        order by t.rn 
      FOR XML PATH(''), TYPE 
      ).value('.', 'NVARCHAR(MAX)') 
     ,1,1,'') 


     set @query = 'select * 
     from 
     (
     select ProductID, col + cast(rn as varchar(10)) new_col, val 
     from 
     (
      select 
     cast(ProductID    as varchar(50))ProductID 
     ,cast(SheetNumber    as varchar(50))SheetNumber 
     ,cast(SheetDesc    as varchar(50))SheetDesc 
     ,cast(MfgPriceCode    as varchar(50))MfgPriceCode 
     ,cast(PriceZone    as varchar(50))PriceZone 
     row_number() over(partition by productid order by productid) rn 

      from #PriceSheet 
     ) x 
     unpivot 
     (
      val 
      for col in ('+ @colsunpivot +') 
     ) u 
    ) x1 
     pivot 
     (
     max(val) 
     for new_col in 
      ('+ @colspivot +') 
    ) p' 

例如說，生成列第一爲有工作表NUMBER不等於行NULL，然後NULLS之後。

Answer 1

select * 
     from 
     (
     select ProductID, 
      col + cast(rn as varchar(10)) new_col, 
      val 
     from 
     (
      select 
      Cast (ProductID as NVarchar(3072)) ProductID 
      ,Cast (SheetNumber as NVarchar(3072)) SheetNumber 
      ,Cast (SheetDesc as NVarchar(3072)) SheetDesc 
      ,Cast (MfgPriceCode as NVarchar(3072)) MfgPriceCode 
      ,Cast (PriceZone as NVarchar(3072)) PriceZone 
      ,row_number() over(partition by ProductID order by Case When SheetNumber Is Null Then 1 Else 0 End, ProductID) rn 
      from MainPricesheet 
    ) x 
     unpivot 
     (
      val 
      for col in ([SheetNumber],[SheetDesc],[MfgPriceCode],[PriceZone]) 
     ) u 
    ) x1 
     pivot 
     (
     max(val) 
     for new_col in 
      ([SheetNumber1],[SheetDesc1],[MfgPriceCode1],[PriceZone1], 
      [SheetNumber2],[SheetDesc2],[MfgPriceCode2],[PriceZone2], 
      [SheetNumber3],[SheetDesc3],[MfgPriceCode3],[PriceZone3], 
      [SheetNumber4],[SheetDesc4],[MfgPriceCode4],[PriceZone4], 
      [SheetNumber5],[SheetDesc5],[MfgPriceCode5],[PriceZone5], 
      [SheetNumber6],[SheetDesc6],[MfgPriceCode6],[PriceZone6], 
      [SheetNumber7],[SheetDesc7],[MfgPriceCode7],[PriceZone7], 
      [SheetNumber8],[SheetDesc8],[MfgPriceCode8],[PriceZone8], 
      [SheetNumber9],[SheetDesc9],[MfgPriceCode9],[PriceZone9], 
      [SheetNumber10],[SheetDesc10],[MfgPriceCode10],[PriceZone10], 
      [SheetNumber11],[SheetDesc11],[MfgPriceCode11],[PriceZone11], 
      [SheetNumber12],[SheetDesc12],[MfgPriceCode12],[PriceZone12], 
      [SheetNumber13],[SheetDesc13],[MfgPriceCode13],[PriceZone13], 
      [SheetNumber14],[SheetDesc14],[MfgPriceCode14],[PriceZone14], 
      [SheetNumber15],[SheetDesc15],[MfgPriceCode15],[PriceZone15], 
      [SheetNumber16],[SheetDesc16],[MfgPriceCode16],[PriceZone16], 
      [SheetNumber17],[SheetDesc17],[MfgPriceCode17],[PriceZone17], 
      [SheetNumber18],[SheetDesc18],[MfgPriceCode18],[PriceZone18], 
      [SheetNumber19],[SheetDesc19],[MfgPriceCode19],[PriceZone19], 
      [SheetNumber20],[SheetDesc20],[MfgPriceCode20],[PriceZone20], 
      [SheetNumber21],[SheetDesc21],[MfgPriceCode21],[PriceZone21]) 
    ) p