Dynamic Pivot Error in sql server - sql

Question

I used the above code from the link. But I recieve an error as
Msg 8156, Level 16, State 1, Line 14 The column 'Factory' was
specified multiple times for 'p'
Efficiently convert rows to columns in sql server
Here is my table :
TEST
ID score Check TotalofScore
------ ----- ------- ------------
867439 1 factory 1
867439 1 Plant 1
867442 1 factory 1
867442 1 Plant 1
923991 1 Warehouse 1
923991 1 Plant 1
923930 1 factory 1
923930 1 Plant 1
923101 1 Warehouse 1
923101 1 Plant 1
Here's my try
DECLARE #cols AS NVARCHAR(MAX),
#query AS NVARCHAR(MAX)
SELECT #cols = Stuff((SELECT ',' + Quotename([check])
FROM TEST
GROUP BY [Check],
[ID]
ORDER BY [ID]
FOR XML PATH(''), TYPE).value('.', 'NVARCHAR(MAX)'), 1, 1, '')
SET #query = N'SELECT ' + #cols + N' from
(SELECT TEST.[ID],
Score,
[check],
[Total Of Score] = Count(TEST.Score) over(partition by [ID], [score], [check])
FROM TEST) T
pivot
(
SUM (T.[score])
for T.[check] in (' + #cols + N') ) p '
EXEC Sp_executesql #query;
Expected Result :
ID TotalofScore factory Plant Warehouse
------ ------------ ------- ----- ---------
867439 1 1
867439 1 1
867442 1 1
867442 1 1
923991 1 1
923991 1 1
923930 1 1
923930 1 1
923101 1 1
923101 1 1

Answer 1

As mentioned in Error You cannot specify same column name more than once in Pivot like
..pivot (SUM (T.[score])
for T.[check] in ([factory,[Plant],[factory]..))p
Change your #cols initialization like this
SELECT #cols = Stuff((SELECT DISTINCT ',' + Quotename([check])
FROM TEST
FOR XML PATH(''), TYPE).value('.', 'NVARCHAR(MAX)'), 1, 1, '')
Or
SELECT #cols = Stuff((SELECT ',' + Quotename([check])
FROM TEST
GROUP BY [Check]
FOR XML PATH(''), TYPE).value('.', 'NVARCHAR(MAX)'), 1, 1, '')
Update : To convert the Dynamic Pivot into procedure and insert the result into new table
create procedure dbname.schemaname.DynamicPivotProcedure
as
begin
DECLARE #cols AS NVARCHAR(MAX),
#query AS NVARCHAR(MAX)
SELECT #cols = Stuff((SELECT ',' + Quotename([check])
FROM TEST
GROUP BY [Check]
FOR XML PATH(''), TYPE).value('.', 'NVARCHAR(MAX)'), 1, 1, '')
SET #query = N'SELECT ID, [Total Of Score],' + #cols + N' from
(SELECT TEST.[ID],
Score,
[check],
[Total Of Score] = Count(TEST.Score) over(partition by [ID], [score], [check])
FROM TEST) T
pivot
(
SUM (T.[score])
for T.[check] in (' + #cols + N') ) p '
EXEC Sp_executesql #query;
end
go
sp_configure 'Show Advanced Options', 1
GO
RECONFIGURE
GO
sp_configure 'Ad Hoc Distributed Queries', 1
GO
RECONFIGURE
GO
IF OBJECT_ID('tempdb..#MyTempTable') IS NOT NULL
begin
DROP TABLE #MyTempTable
end
SELECT * INTO #MyTempTable FROM
OPENROWSET('SQLNCLI', 'Server=(local)\SQL2008;Trusted_Connection=yes;',
'EXEC dbname.schemaname.DynamicPivotProcedure')
SELECT * FROM #MyTempTable

Answer 2

Remove the Id from GROUP BY and ORDER By clause. So that you get the DISTINCT Check columns.
DECLARE #cols AS NVARCHAR(MAX),
#query AS NVARCHAR(MAX)
select #cols = STUFF((SELECT ',' + QUOTENAME([check])
from #Sample
group by [Check]
FOR XML PATH(''), TYPE
).value('.', 'NVARCHAR(MAX)')
,1,1,'')
set #query = N'SELECT ID, [Total Of Score], ' + #cols + N' from
(
SELECT
TEST.[ID],
Score,
[check],
[Total Of Score] = Count(TEST.Score) over(partition by [ID], [score], [check])
FROM #Sample AS TEST
) T
pivot
(
SUM (T.[score])
for T.[check] in (' + #cols + N')
) p '
exec sp_executesql #query;