SQL Pivot Issue, Need dynamic column names - sql-server

Question

Alright. So we needed to get output as down with the code below. I got most of the code from: Convert Rows to columns using 'Pivot' in SQL Server. This gives me the dynamic column names for the years and then counts the events for each year. I need (or at least would like) for the column names to formatted as FY 2014 Total etc. instead of just 2014. So created another list of column names to be used as the output names. I figured that when doing the pivot you would be giving the custom names for the new columns. I'm not sure what I would need to do.
DECLARE #colValues as NVARCHAR(MAX),
#colNames as NVARCHAR(MAX),
#query as NVARCHAR(MAX)
--Creates the column names dynamically from the FY results
select #colValues = STUFF((
SELECT ',' + QUOTENAME(FY)
From [dbo].[Table]
Group By FY
Order By FY desc
for xml path(''), TYPE
).value('.', 'NVARCHAR(MAX)'),1,1,'')
select #colNames = STUFF((
SELECT ',' + '[FY ' + Cast(FY as NVARCHAR(4)) + ' Total]'
From [dbo].[Table]
Group By FY
Order By FY desc
for xml path(''), TYPE
).value('.', 'NVARCHAR(MAX)'),1,1,'')
--print(#cols)
--Creates the SQL Query using pivot with the dynamic columns
set #query = '
with temp1 as
(
Select a.EventType,
a.Days_Since_Last_Event,
row_number() over (partition by a.EventType order by a.Days_Since_Last_Event) as ranking
From
(
SELECT EventType
,DATEDIFF(day,EventDate,GETDATE()) AS Days_Since_Last_Event
FROM [dbo].[Table]
) a join
(
SELECT EventType
,DATEDIFF(day,EventDate,GETDATE()) AS Days_Since_Last_Event
FROM [dbo].[Table]
) b on a.EventType = b.EventType and a.Days_Since_Last_Event = b.Days_Since_Last_Event
), temp3 as
(
select EventType,
Days_Since_Last_Event
from temp1
where ranking = 1
), temp2 as
(
Select EventType
,'+ #colNames + '
From
(
Select EventType, FY, 1 as thing
From [dbo].[Table]
) a
Pivot
(
Count(thing)
for FY in (' + #colValues + ')
) b
)
Select t3.*, '+ #colNames +'
From temp3 t3
join temp2 t2 on t3.EventType = t2.EventType'
execute(#query);

Answer 1

use #colValues in your temp2 cte in both places.. then use this in your final select.
select #colNames = STUFF((
SELECT ',' + QUOTENAME(FY) + ' AS [FY ' + Cast(FY as NVARCHAR(4)) + ' Total]'
From [dbo].[Table]
Group By FY
Order By FY desc
for xml path(''), TYPE
).value('.', 'NVARCHAR(MAX)'),1,1,'')
should give you something like this..
DECLARE #colValues as NVARCHAR(MAX),
#colNames as NVARCHAR(MAX),
#query as NVARCHAR(MAX)
--Creates the column names dynamically from the FY results
select #colValues = STUFF((
SELECT ',' + QUOTENAME(FY)
From [dbo].[Table]
Group By FY
Order By FY desc
for xml path(''), TYPE
).value('.', 'NVARCHAR(MAX)'),1,1,'')
select #colNames = STUFF((
SELECT ',' + QUOTENAME(FY) + ' AS [FY ' + Cast(FY as NVARCHAR(4)) + ' Total]'
From [dbo].[Table]
Group By FY
Order By FY desc
for xml path(''), TYPE
).value('.', 'NVARCHAR(MAX)'),1,1,'')
--Creates the SQL Query using pivot with the dynamic columns
set #query = '
with temp1 as
(
Select a.EventType,
a.Days_Since_Last_Event,
row_number() over (partition by a.EventType order by a.Days_Since_Last_Event) as ranking
From
(
SELECT EventType
,DATEDIFF(day,EventDate,GETDATE()) AS Days_Since_Last_Event
FROM [dbo].[Table]
) a join
(
SELECT EventType
,DATEDIFF(day,EventDate,GETDATE()) AS Days_Since_Last_Event
FROM [dbo].[Table]
) b on a.EventType = b.EventType and a.Days_Since_Last_Event = b.Days_Since_Last_Event
), temp3 as
(
select EventType,
Days_Since_Last_Event
from temp1
where ranking = 1
), temp2 as
(
Select EventType
,'+ #colValues + '
From
(
Select EventType, FY, 1 as thing
From [dbo].[Table]
) a
Pivot
(
Count(thing)
for FY in (' + #colValues + ')
) b
)
Select t3.*, '+ #colNames +'
From temp3 t3
join temp2 t2 on t3.EventType = t2.EventType'
execute(#query);