SQL Server dynamic pivot with multiple columns - sql-server

Question

Here's the scenario I am in. I have my data in the following format.
My source data
IssuedOn Country Sales Transactions
------------------------------------------
29-Aug-16 India 40 8
29-Aug-16 Australia 15 3
29-Aug-16 Canada 15 3
30-Aug-16 India 50 10
30-Aug-16 Australia 25 5
30-Aug-16 Canada 10 2
31-Aug-16 India 100 25
31-Aug-16 Australia 30 10
31-Aug-16 Canada 55 12
This is the output I am looking for
Expected output
IssuedDate Australia Canada India TotalSales Transactionscount
---------------------------------------------------------------------
29-Aug-16 15 15 40 70 14
30-Aug-16 25 10 50 85 17
31-Aug-16 30 55 100 185 47
I have been able to pivot the data on country and get the "Total Sales" column. However, I am not able to get the "Total Transactions" column right.
Here's the code to generate the source data table. Would really help if someone can guide me.
Create Table tbl1
(
IssuedOn date,
Country varchar(100),
Sales bigint,
Transactions bigint
)
Insert into tbl1(IssuedOn, Country, Sales, Transactions)
Values ('2016-08-29', 'India', 40, 8),
('2016-08-29', 'Australia', 15, 3),
('2016-08-29', 'Canada', 15, 3),
('2016-08-30', 'India', 50, 10),
('2016-08-30', 'Australia', 25, 5),
('2016-08-30', 'Canada', 10, 2),
('2016-08-31', 'India', 100, 25),
('2016-08-31', 'Australia', 30, 10),
('2016-08-31', 'Canada', 55, 12)
select *
from tbl1

Answer 1

A more verbose dynamic SQL query, without the use of a stored procedure is as follows:
DECLARE #cols AS NVARCHAR(MAX);
DECLARE #pivotSales AS NVARCHAR(MAX);
DECLARE #sql AS NVARCHAR(MAX);
SELECT #cols = ISNULL(#cols + ', ', '') + QUOTENAME(Country)
FROM (SELECT DISTINCT Country FROM tbl1) AS Countries
SET #pivotSales = N'SELECT IssuedOn, ' + #cols +'
FROM (SELECT IssuedOn, Country, Sales FROM tbl1) AS sales
PIVOT(SUM(Sales) FOR Country IN (' + #cols + ')) AS pvt';
SET #sql = ';WITH CTE_SalesPivot AS (
'+#pivotSales+'
),
CTE_SalesTotal AS (
SELECT IssuedOn, SUM(Sales) AS [Grand Total]
FROM tbl1
GROUP BY IssuedOn
),
CTE_Transactions AS (
SELECT IssuedOn, SUM(Transactions) AS [Transaction Count]
FROM tbl1
GROUP BY IssuedOn
)
SELECT CTE_SalesPivot.IssuedOn, ' + #cols + ', CTE_SalesTotal.[Grand Total], CTE_Transactions.[Transaction Count]
FROM
CTE_SalesPivot
INNER JOIN CTE_SalesTotal ON CTE_SalesPivot.IssuedOn = CTE_SalesTotal.IssuedOn
INNER JOIN CTE_Transactions ON CTE_SalesPivot.IssuedOn = CTE_Transactions.IssuedOn';
EXEC sp_executesql #sql;

Answer 2

The following is the stored procedure used for the bulk of my dynamic pivots
Exec [prc-Pivot] 'tbl1','Country','sum(Sales)[]','IssuedOn','sum(Transactions)[Transactions],sum(Sales)[TotalSales]'
IssuedOn Transactions TotalSales Australia Canada India
2016-08-29 14 70 15 15 40
2016-08-30 17 85 25 10 50
2016-08-31 47 185 30 55 100
The stored procedure
ALTER PROCEDURE [dbo].[prc-Pivot] (
#Source varchar(1000), -- Any Table or Select Statement
#PvotCol varchar(250), -- Field name or expression ie. Month(Date)
#Summaries varchar(250), -- aggfunction(aggValue)[optionalTitle]
#GroupBy varchar(250), -- Optional additional Group By
#OtherCols varchar(500) ) -- Optional Group By or aggregates
AS
--Exec [prc-Pivot] 'Select Year=Year(TR_Date),* From [Chinrus-Series].[dbo].[DS_Treasury_Rates]','''Q''+DateName(QQ,TR_Date)','avg(TR_Y10)[-Avg]','Year','count(*)[Records],min(TR_Y10)[Min],max(TR_Y10)[Max],Avg(TR_Y10)[Avg]'
--Exec [prc-Pivot] '#Temp','Attribute','max(Description)[]','ID','count(*)[Records]'
Set NoCount On
Declare #Vals varchar(max),#SQL varchar(max);
Set #Vals = ''
Set #OtherCols= IsNull(', ' + #OtherCols,'')
Set #Source = case when #Source Like 'Select%' then #Source else 'Select * From '+#Source end
Create Table #TempPvot (Pvot varchar(100))
Insert Into #TempPvot
Exec ('Select Distinct Convert(varchar(100),' + #PvotCol + ') as Pvot FROM (' + #Source + ') A')
--Select #Vals = #Vals + ', isnull(' + Replace(Replace(#Summaries,'(','(CASE WHEN ' + #PvotCol + '=''' + Pvot + ''' THEN '),')[', ' END),NULL) As [' + Pvot ) From #TempPvot Order by Pvot
Select #Vals = #Vals + ', isnull(' + Replace(Replace(#Summaries,'(','(CASE WHEN ' + #PvotCol + '=''' + Pvot + ''' THEN '),')[', ' END),0) As [' + Pvot ) From #TempPvot Order by Pvot
Drop Table #TempPvot
Set #SQL = Replace('Select ' + Isnull(#GroupBy,'') + #OtherCols + #Vals + ' From (' + #Source + ') PvtFinal ' + case when Isnull(#GroupBy,'')<>'' then 'Group By ' + #GroupBy + ' Order by ' + #GroupBy else '' end,'Select , ','Select ')
--Print #SQL
Exec (#SQL)

Answer 3

here's a simple way to do it using aggregate case expressions.
DECLARE #cols NVARCHAR(MAX),
#sql NVARCHAR(MAX)
SELECT #cols = STUFF((
SELECT ',' + 'SUM(CASE WHEN Country = ''' + Country + ''' THEN Sales END) AS ' + QUOTENAME(Country)
FROM (SELECT DISTINCT Country FROM tbl1) t
ORDER BY Country
FOR XML PATH('')
),1, 1, '')
SET #sql = N'
SELECT IssuedOn, ' + #cols + ',
SUM(Sales) AS TotalSales,
SUM(Transactions) AS TransactionCount
FROM tbl1
GROUP BY IssuedOn
'
EXEC(#sql)
this will generate a query that should look like this.
SELECT IssuedOn,
SUM(CASE WHEN Country = 'Australia' THEN Sales END) AS [Australia],
SUM(CASE WHEN Country = 'Canada' THEN Sales END) AS [Canada],
SUM(CASE WHEN Country = 'India' THEN Sales END) AS [India],
SUM(Sales) AS TotalSales,
SUM(Transactions) AS TransactionCount
FROM tbl1
GROUP BY IssuedOn