Dynamic columns using PIVOT and I need to use those dynamic columns along with aggregate function to generate reports month wise -SQL Server 2012

Question

I'm using SQL SERVER 2012 and i am using the below query

SELECT Status AS [Status]
    ,[Feb-2016] AS [Current(Feb)]
    ,[Jan-2016]
    ,[Dec-2015]
    ,[Nov-2015]
    ,[Oct-2015]
    ,[Sep-2015]
    ,[Aug-2015]
    ,[Jul-2015]
    ,[Jun-2015]
    ,[May-2015]
    ,[Apr-2015]
    ,[Mar-2015]
    ,[Feb-2015]
INTO #TempTable
FROM (
    SELECT Status
        ,[Count]
        ,[Month]
    FROM CTE2--I'm using this Common Table Expression in the SP
    ) AS [Mnth]
PIVOT(SUM([Count]) FOR [Month] IN (
            [Feb-2016]
            ,[Jan-2016]
            ,[Dec-2015]
            ,[Nov-2015]
            ,[Oct-2015]
            ,[Sep-2015]
            ,[Aug-2015]
            ,[Jul-2015]
            ,[Jun-2015]
            ,[May-2015]
            ,[Apr-2015]
            ,[Mar-2015]
            ,[Feb-2015]
            )) AS [nNamePivot]

For the above part i can use dynamic Query

---

If i use dynamic query, how to get output for the below part and I need to use those dynamic columns along with aggregate function to generate reports month wise.

SELECT *
FROM #TempTable
UNION
SELECT 'Total'
    ,SUM([Current(Feb)])
    ,SUM([Jan-2016])
    ,SUM([Dec-2015])
    ,SUM([Nov-2015])
    ,SUM([Oct-2015])
    ,SUM([Sep-2015])
    ,SUM([Aug-2015])
    ,SUM([Jul-2015])
    ,SUM([Jun-2015])
    ,SUM([May-2015])
    ,SUM([Apr-2015])
    ,SUM([Mar-2015])
    ,SUM([Feb-2015])
FROM #TempTable

Please help me with this.

Answer 1

Another dynamic string can be created for the aggregations in the same way as you create one for column names. For example, the string for column names will look like:

[Jan-2015], [Feb-2015], [Mar-2015], [Apr-2015]  

and the string for aggregations will look like:

SUM([Jan-2015]), SUM([Feb-2015]), SUM([Mar-2015]), SUM([Apr-2015])

To create dynamic string of column names:

STUFF((SELECT ',['+col_name+']' FROM table FOR XML PATH('')),1,1,'');

and to create a string for aggregations:

STUFF((SELECT ',SUM(['+col_name+'])' FROM table FOR XML PATH('')),1,1,'');