Cross Tab Query-SQL Server

Query is used to convert column into rows using the cross tab query.

DECLARE @select varchar(8000),@sumfunc varchar(100),@pivot varchar(100)
DECLARE @table varchar(100)
SET @select='SELECT CustID,SalesID FROM testTable GROUP BY CustID,SalesID'
SET @sumfunc='SUM(adsID)'
SET @pivot='adsID'
SET @table='testTable'

DECLARE @sql varchar(8000), @delim varchar(1)
SET NOCOUNT ON
SET ANSI_WARNINGS OFF

EXEC ('SELECT ' + @pivot + ' AS pivot1 INTO ##pivot FROM ' + @table + ' WHERE 1=2')
EXEC ('INSERT INTO ##pivot SELECT DISTINCT ' + @pivot + ' FROM ' + @table + ' WHERE '
+ @pivot + ' Is Not Null')


SELECT @sql='', @sumfunc=stuff(@sumfunc, len(@sumfunc), 1, ' END)' )
print @sql
SELECT @delim=CASE Sign( CharIndex('char', data_type)+CharIndex('date', data_type) )
WHEN 0 THEN '' ELSE '''' END
FROM tempdb.information_schema.columns
WHERE table_name='##pivot' AND column_name='pivot1'

SELECT @sql=@sql + '''' + convert(varchar(100), pivot1) + ''' = ' +
stuff(@sumfunc,charindex( '(', @sumfunc )+1, 0, ' CASE ' + @pivot + ' WHEN '
+ @delim + convert(varchar(100), pivot1) + @delim + ' THEN ' ) + ', ' FROM ##pivot

DROP TABLE ##pivot

SELECT @sql=left(@sql, len(@sql)-1)
SELECT @select=stuff(@select, charindex(' FROM ', @select)+1, 0, ', ' + @sql + ' ')

EXEC (@select)
SET ANSI_WARNINGS ON