SQL FORCE SORT Columns generated from rows by values contained - sql

Question

I have a requirement to order the output of a dynamic query, that turns columns into rows, to ensure that only columns with values are generated before the rows with no values. How do I force order on the generation of the columns so the first columns are columns that contain values for particular fields while those with no values for the particular fields are generated at the end of my row?
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'
Say for instance, to generate the columns first for rows that have SheetNumber not equal to NULL and then the NULLS afterward.

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