Dynamic Pivot Error in sql server

问题:

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

回答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

回答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;