Question

I want to display rows to columns in Sql Server. I have seen the other questions but those columns are hardcoded in the pivot but my columns will be dynamic. What I have achieved till now. As shown in the screenshot I am able to convert the rows into columns but few things I am not able to accomplish.. Need your guyz help

1. Replacing NULL To 0 in All the Columns
2. Need to Add 1 more column which will show the sum of all Columns except the companyID

My SQL code:

DECLARE @Columns VARCHAR(MAX)
DECLARE @Convert VARCHAR(MAX)

SELECT  @Columns = STUFF((
           SELECT '],[' + ErrClassfn
             from ArchimedesTables.dbo.PM_ErrClassificationSetup
            WHERE CONVERT(VARCHAR(10), ISNULL(EndDate, GETDATE()), 101) 
                          Between CONVERT(VARCHAR(10), GETDATE(), 101)
                          AND     CONVERT(VARCHAR(10), GETDATE(), 101)
            ORDER BY '],[' + CONVERT(VARCHAR(MAX), ID) ASC
              FOR
                  XML PATH('')
           ), 1, 2, '') + ']'

SET @Convert = 'SELECT  * INTO #mynewTable FROM
(
    SELECT COUNT(WQ.ErrClassfnID) as ErrorCount, UPPER(WQ.CompanyID) as CompanyID, 
           PME.ErrClassfn as ErrorName
      FROM Version25.dbo.WF_Quality AS WQ
      LEFT JOIN ArchimedesTables.dbo.PM_ErrClassificationSetup as PME
           ON WQ.ErrClassfnID = PME.ID
     GROUP BY
          UPPER(CompanyID), ErrClassfn
) Quality PIVOT ( SUM(ErrorCount)  For ErrorName IN (' + @Columns
    + ')) as PivotTable  SeLeCt * FROM #mynewTable'

EXEC(@Convert)

Answer 1

You can alter the columns names, etc for a Dynamic Pivot, similar to this:

DECLARE @ColumnsNull VARCHAR(MAX)
DECLARE @Columns VARCHAR(MAX)
DECLARE @Convert VARCHAR(MAX)

SELECT  @ColumnsNull = STUFF((SELECT ', IsNull(' + QUOTENAME(ErrClassfn) +', 0) as ['+ rtrim(ErrClassfn)+']' 
                   from ArchimedesTables.dbo.PM_ErrClassificationSetup
                   WHERE CONVERT(VARCHAR(10), ISNULL(EndDate, GETDATE()), 101) 
                                  Between CONVERT(VARCHAR(10), GETDATE(), 101)
                                  AND     CONVERT(VARCHAR(10), GETDATE(), 101)
                   ORDER BY ID ASC
            FOR XML PATH(''), TYPE
            ).value('.', 'NVARCHAR(MAX)') 
        ,1,1,'')

SELECT  @Columns = STUFF((
           SELECT '],[' + ErrClassfn
             from ArchimedesTables.dbo.PM_ErrClassificationSetup
            WHERE CONVERT(VARCHAR(10), ISNULL(EndDate, GETDATE()), 101) 
                          Between CONVERT(VARCHAR(10), GETDATE(), 101)
                          AND     CONVERT(VARCHAR(10), GETDATE(), 101)
            ORDER BY '],[' + CONVERT(VARCHAR(MAX), ID) ASC
              FOR
                  XML PATH('')
           ), 1, 2, '') + ']'


SET @Convert = 'SELECT  CompanyID, '+ @ColumnsNull + '
                INTO #mynewTable 
                FROM
                (
                    SELECT COUNT(WQ.ErrClassfnID) as ErrorCount, UPPER(WQ.CompanyID) as CompanyID, 
                           PME.ErrClassfn as ErrorName
                      FROM Version25.dbo.WF_Quality AS WQ
                      LEFT JOIN ArchimedesTables.dbo.PM_ErrClassificationSetup as PME
                           ON WQ.ErrClassfnID = PME.ID
                     GROUP BY
                          UPPER(CompanyID), ErrClassfn
                ) Quality PIVOT ( SUM(ErrorCount)  For ErrorName IN (' + @Columns
                    + ')) as PivotTable  SeLeCt * FROM #mynewTable'

EXEC(@Convert)

I would advise to write the query and get the columns working first, then add the data to a #temp table. It will be easier to debug that way.

You can also create a SUM() field the same way, where you build it dynamically and then add it at in the final SELECT:

So it could be something like this that you could add to the final SELECT:

SELECT  @ColumnsTotal = STUFF((SELECT '+' + QUOTENAME(ErrClassfn) 
                   from ArchimedesTables.dbo.PM_ErrClassificationSetup
                   WHERE CONVERT(VARCHAR(10), ISNULL(EndDate, GETDATE()), 101) 
                                  Between CONVERT(VARCHAR(10), GETDATE(), 101)
                                  AND     CONVERT(VARCHAR(10), GETDATE(), 101)
                   ORDER BY ID ASC
            FOR XML PATH(''), TYPE
            ).value('.', 'NVARCHAR(MAX)') 
        ,1,1,'')