Hvis du tilføjer en ROW_NUMBER() til blandingen, vil din pivot være i stand til at bevare sammenhængen mellem aktiviteter og procenter.
;with cte as
(
select *, ROW_NUMBER() over (partition by name order by percentage desc) ROWNUM
from A
),
cte2 as
(
SELECT Id,Code,ROWNUM,James,James_,Sam,Sam_,Lisa,Lisa_
FROM cte
PIVOT(MAX(activity)
FOR name IN (James,Sam,Lisa)) AS PVTTable PIVOT
(
MAX(percentage)
FOR name1 IN (James_,Sam_,Lisa_)) AS PVTTable1
)
select Id, Code, MAX(James) James, MAX(James_) James_, MAX(Sam) Sam, MAX(Sam_) Sam_, MAX(Lisa) Lisa, MAX(Lisa_) Lisa_
from cte2
group by Id, Code, ROWNUM
Returnerer:
Id Code James James_ Sam Sam_ Lisa Lisa_
1 Prashant Running 43.43 Cooking 1 73 Walking 90.34
1 Prashant Stealing 0.00 Cooking 3.43 NULL NULL
1 Prashant Lacking 0.00 NULL NULL NULL NULL
Ideen er, at du i det første almindelige tabeludtryk transformerer A-tabellen til dette:
Id Code percentage name name1 activity ROWNUM
1 Prashant 43.43 James James_ Running 1
1 Prashant 0.00 James James_ Stealing 2
1 Prashant 0.00 James James_ Lacking 3
1 Prashant 90.34 Lisa Lisa_ Walking 1
1 Prashant 73 Sam Sam_ Cooking 1 1
1 Prashant 3.43 Sam Sam_ Cooking 2
Og i hele den resterende forespørgsel virker ROWNUM-kolonnen blot for at binde procentværdien til aktiviteten.
Det er nemt at gøre det dynamisk, når først du har en fungerende forespørgsel. Bare udskift alle de dynamiske dele (i dette tilfælde kommaseparerede lister over navne, ikke?) med variabler. Noget som dette:
declare @sql nvarchar(max)
declare @name_concat nvarchar(max)
declare @name1_concat nvarchar(max)
declare @select_aggs nvarchar(max)
select @name_concat = STUFF((select distinct ',' + quotename(name) from A order by 1 for xml path('')), 1, 1, '')
select @name1_concat = STUFF((select distinct ',' + quotename(name1) from A order by 1 for xml path('')), 1, 1, '')
;with cte_all_names as (
select name from A
union all
select name1 from A
)
select @select_aggs = STUFF((select distinct ',MAX(' + quotename(name) + ') ' + quotename(name) from cte_all_names order by 1 for xml path('')), 1, 1, '')
select @sql = '
;with cte as
(
select *, ROW_NUMBER() over (partition by name order by percentage desc) ROWNUM
from A
),
cte2 as
(
SELECT Id,Code,ROWNUM,' + @name_concat + ',' + @name1_concat + '
FROM cte
PIVOT(MAX(activity)
FOR name IN (' + @name_concat + ')) AS PVTTable PIVOT
(
MAX(percentage)
FOR name1 IN (' + @name1_concat + ')) AS PVTTable1
)
select Id, Code, ' + @select_aggs + '
from cte2
group by Id, Code, ROWNUM
'
exec sp_executesql @sql