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How to create a pivot table in SQL Server 2005

Posted on 2007-03-23
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How do I create a pivot table in Server 2005 - given the following table?

Month          Year               Category                         Tickets          Transactions        Status

1      2006      Troubleshoot      3      1                    126      Closed
1      2006      Troubleshoot1      7      5                   Closed
1      2006      Serv change      5      12      Closed
2      2006      0ther requests s      26      48      Closed
2      2006      Accessories      4      9      Closed
2      2006      Add/change current information      28      64      Closed
3      2006      Assign phone/assets to different user      1      1      Closed
3      2006      Coverage issue report      3      3      Closed
4      2006      Data device (Blackberry, Treo etc.)      17      20      Closed
4      2006      Deactivation of service      45      106      Closed


I need the output like this

Category                          Month 1  Year 2006                  Month  2 Year     2006               Month 3  Year  2006.....etc..  
Troubleshoot      3                    1         126
Troubleshoot1                    7          5
Serv change      5                  12

Thanks!!


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Question by:JElster
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3 Comments
 
LVL 50

Expert Comment

by:Lowfatspread
ID: 18781367
basically

select category
    ,sum(case month when 1 then tickets else null end) as m1Ticket
    ,sum(case month when 1 then transactions else null end) as m1tran
    ,sum(case month when 1 then status else null end) as m1stat
    ,sum(case month when 2 then tickets else null end) as m2ticket
    ,sum(case month when 2 then transactions else null end) as m2tran
    ,sum(case month when 2 then status else null end) as m2stat
,....
from Yourtable
where year=2006
and month between 1 and 12
group by category
0
 
LVL 1

Author Comment

by:JElster
ID: 18781487
I get

Msg 8117, Level 16, State 1, Line 1
Operand data type nvarchar is invalid for sum operator.

I thought 2005 has a PIVOT function?

What do I do in the case of having hundreds of months and years?... I have to create all the column headers?

thanks
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LVL 50

Accepted Solution

by:
Lowfatspread earned 800 total points
ID: 18786043
is status a char field ? remove it...
what are the column names of your numeric items?

yes there are pivot/unpivot  extensions to the select statement ...
however you need dynamic sql to use them...

my gut feel to that is to still use the technique i described above or this procedure...

http://www.microsoft.com/sql/ce/techinfo/20bol.asp

EXEC sp_TRANSFORM 'SUM','PM_EmpAssignedID','vw_Loc_Pos_Dflt_Rem2','PM_PositionsID','Position'

IF OBJECT_ID('sp_Transform', 'P') IS NOT NULL
     DROP PROCEDURE sp_Transform
GO
CREATE PROCEDURE sp_TRANSFORM
/*
   Purpose:     Creates a Pivot(tm) table for the specified table,
                view or select statement
   Author:      svenh@itrain.de
   Version:     1.1
   History:     march 2000 version 1.0
                july 2002  version 1.1

   Input parameters:
       @Aggregate_Function (optional)
            the aggregate function to use for the pivot
                default function is SUM
        @Aggregate_Column
                name of column for aggregate
        @TableOrView_Name
                name of table or view to use
                if name contains spaces or other special
                characters [] should be used
                Can also be a valid SELECT statement
        @Select_Column
                Column for first column in result table
                for this column row values are displayed
        @Pivot_Column
                Column that is transformed into columns
                for this column column values are displayed
     @DEBUG
          Set this flag to 1 to get debug-information
   
      Example usage:
        Table given   aTable
        content:      Product    Salesman    Sales
                      P1         Sa          12
                      P2         Sb          10
                      P2         Sb          3
                      P3         Sa          12
                      P1         Sc          8
                      P3         Sa          1
                      P2         Sa          NULL
     CALL
     EXEC sp_Transform 'SUM', 'Sales', 'aTable', 'Product', 'Salesman'
or      EXEC sp_Transform @Aggregate_Column='Sales', @TableOrViewName='aTable',
                            @Select_Column='Product', @Pivot_Column='Salesman'

Result:
        Product| Sa       | Sb       | Sc      | Total      
        -------+----------+----------+---------+---------
        P1     | 12,00    |  0,00    |  8,00   |  20,00
        P2     |  0,00    | 13,00    |  0,00   |  13,00
        P3     | 13,00    |  0,00    |  0,00   |  13,00
        -------+----------+----------+---------+---------
        Total  | 25,00    | 13,00    |  8,00   |  46,00


*/
     @Aggregate_Function nvarchar(30) = 'SUM',
     @Aggregate_Column   nvarchar(255),
     @TableOrView_Name   nvarchar(255),
     @Select_Column         nvarchar(255),
     @Pivot_Column       nvarchar(255),
     @DEBUG              bit = 0
AS
SET NOCOUNT ON
DECLARE @TransformPart   nvarchar(4000)
DECLARE @SQLColRetrieval nvarchar(4000)
DECLARE @SQLSelectIntro  nvarchar(4000)
DECLARE @SQLSelectFinal  nvarchar(4000)

IF @Aggregate_Function NOT IN ('SUM', 'COUNT', 'MAX', 'MIN', 'AVG', 'STDEV', 'VAR', 'VARP', 'STDEVP')  
     BEGIN RAISERROR ('Invalid aggregate function: %s', 10, 1, @Aggregate_Function) END
ELSE
BEGIN
     SELECT @SQLSelectIntro = 'SELECT CASE WHEN (GROUPING('  +
                         QUOTENAME(@Select_Column)       +
                    ') = 1) THEN ''Total'' ELSE '   +
                    'CAST( + '                      +
                                QUOTENAME(@Select_Column)       +
                    ' AS NVARCHAR(255)) END As '    +
                    QUOTENAME(@Select_Column)       +
                    ', '
     IF @DEBUG = 1 PRINT @sqlselectintro
     SET @SQLColRetrieval =
     N'SELECT @TransformPart = CASE WHEN @TransformPart IS NULL THEN ' +
               N'''' + @Aggregate_Function + N'(CASE CAST(' +
               QUOTENAME(CAST(@Pivot_Column AS VARCHAR(255))) +
               N' AS VARCHAR(255)) WHEN '''''' + CAST('  +
               QUOTENAME(@Pivot_Column) +
               N' AS NVarchar(255)) + '''''' THEN ' + @Aggregate_Column +
               N' ELSE 0 END) AS '' + QUOTENAME(' +
               QUOTENAME(CAST(@Pivot_Column AS VARCHAR(255))) +
               N') ELSE  @TransformPart + '', ' + @Aggregate_Function +
               N' (CASE CAST(' + QUOTENAME(@Pivot_Column) +
               N' AS nVARCHAR(255)) WHEN '''''' + CAST(' +
               QUOTENAME(CAST(@Pivot_Column As VarChar(255))) +
               N' AS nVARCHAR(255)) + '''''' THEN ' +
               @Aggregate_Column +
               N' ELSE 0 END) AS '' + QUOTENAME(' +
               QUOTENAME(CAST(@Pivot_Column AS VARCHAR(255))) +
               N') END FROM (SELECT DISTINCT ' +
               QUOTENAME(CAST(@Pivot_Column AS VARCHAR(255))) +
               N' FROM ' + @TableOrView_Name + ') SelInner'
     IF @DEBUG = 1 PRINT @SQLColRetrieval    
     EXEC sp_executesql @SQLColRetrieval,
                           N'@TransformPart nvarchar(4000) OUTPUT',
                           @TransformPart OUTPUT
     IF @DEBUG = 1 PRINT @TransformPart
     SET @SQLSelectFinal =
                           N', ' + @Aggregate_Function + N'(' +
                           CAST(@Aggregate_Column As Varchar(255)) +
                           N') As Total FROM ' + @TableOrView_Name + N' GROUP BY ' +
                           @Select_Column + N' WITH CUBE'
     IF @DEBUG = 1 PRINT @SQLSelectFinal
     EXEC (@SQLSelectIntro + @TransformPart + @SQLSelectFinal)
END
GO


/*
To test the preceding stored procedure uncomment the
following section

IF EXISTS (SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES
     WHERE TABLE_NAME = 'aTable')
   DROP TABLE aTable  
--GO
 
CREATE TABLE aTable(Product varchar(2), Salesman varchar(2), Sales int)
INSERT INTO aTable VALUES('P1', 'Sa', 12)
INSERT INTO aTable VALUES('P2', 'Sb', 10)
INSERT INTO aTable VALUES('P2', 'Sb', 3)
INSERT INTO aTable VALUES('P3', 'Sa', 12)
INSERT INTO aTable VALUES('P1', 'Sc', 8)
INSERT INTO aTable VALUES('P3', 'Sa', 1)
INSERT INTO aTable VALUES('P2', 'Sa', NULL)

EXEC sp_Transform @Aggregate_Column='Sales', @TableOrView_Name='aTable',
                            @Select_Column='Product', @Pivot_Column='Salesman'

*/
-- Example from Northwind Table
-- USE NORTHWIND
-- GO
-- EXEC sp_transform 'sum', 'unitprice', 'products', 'productname', 'CategoryID'
-- GO


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