Convert Rows to columns using 'Pivot' in mssql when columns are string data type

I need to know whether 'pivot' in MS SQL can be used for converting rows to columns if there is no aggregate function to be used. i saw lot of examples with aggregate function only. my fields are string data type and i need to convert this row data to column data.This is why i wrote this question.i just did it with 'case'. Can anyone help me......Thanks in advance.

Answers


You can use a PIVOT to perform this operation. When doing the PIVOT you can do it one of two ways, with a Static Pivot that you will code the rows to transform or a Dynamic Pivot which will create the list of columns at run-time:

Static Pivot (see SQL Fiddle with a Demo):

SELECT *
FROM
(
  select empid, wagecode, amount
  from t1
) x
pivot
(
  sum(amount)
  for wagecode in ([basic], [TA], [DA])
) p

Dynamic Pivot:

DECLARE @cols AS NVARCHAR(MAX),
    @query  AS NVARCHAR(MAX);

select @cols = STUFF((SELECT distinct ',' + QUOTENAME(wagecode) 
                  FROM t1 
            FOR XML PATH(''), TYPE
            ).value('.', 'NVARCHAR(MAX)') 
        ,1,1,'')

set @query = 'SELECT empid, ' + @cols + ' from 
             (
                 select empid, wagecode, amount
                 from t1
            ) x
            pivot 
            (
                sum(amount)
                for wagecode in (' + @cols + ')
            ) p '

execute(@query)

Both of these will give you the same results


sample format

empid     wagecode    amount 1              basic           1000 1              TA               500 1              DA               500 2              Basic           1500 2              TA               750 2              DA               750

empid      basic       TA        DA 1            1000         500      500 2            1500         750       750

THE ANSWER I GOT IS

   SELECT empID , [1bas] as basic, [1tasal] as TA,[1otsal] as DA
   FROM (
   SELECT empID, wage, amount
   FROM table) up
   PIVOT (SUM(amt) FOR wgcod IN ([1bas], [1tasal],[1otsal])) AS pvt
   ORDER BY empID 
   GO

Try this:

SELECT empid AS EmpID     
, ISNULL(SUM(CASE wagecode WHEN 'basic' THEN Amount ELSE 0 END), 0) AS Basic         
, ISNULL(SUM(CASE wagecode WHEN 'ta' THEN Amount ELSE 0 END), 0) AS TA     
, ISNULL(SUM(CASE wagecode WHEN 'da' THEN Amount ELSE 0 END), 0) AS DA 
FROM Employee
GROUP BY empid 

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