Question

我需要订购动态查询的输出，将列转换为行，以确保在没有值的行之前只生成具有值的列。如何强制生成列的顺序，以便第一列是包含特定字段值的列，而在行的末尾生成没有特定字段值的列？

             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'

比如说，首先为SheetNumber不等于NULL的行生成列，然后再生成NULLS。

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

SQL FORCE SORT按行包含的行生成的列

1 个答案: