Understanding PIVOT function in T-SQL

Question

I am very new to SQL.

I have a table like this:

ID | TeamID | UserID | ElementID | PhaseID | Effort
-------------------------------------------------         


        

Answer 1

    SELECT ,
    [first pivoted column] AS ,
    [second pivoted column] AS ,
    ...
    [last pivoted column] AS 
FROM
    ()
    AS 
PIVOT
(
    ()
FOR
[]
    IN ( [first pivoted column], [second pivoted column],
    ... [last pivoted column])
) AS 
;

USE AdventureWorks2008R2 ;
GO
SELECT DaysToManufacture, AVG(StandardCost) AS AverageCost 
FROM Production.Product
GROUP BY DaysToManufacture;

    DaysToManufacture          AverageCost
0                          5.0885
1                          223.88
2                          359.1082
4                          949.4105

    -- Pivot table with one row and five columns
SELECT 'AverageCost' AS Cost_Sorted_By_Production_Days, 
[0], [1], [2], [3], [4]
FROM
(SELECT DaysToManufacture, StandardCost 
    FROM Production.Product) AS SourceTable
PIVOT
(
AVG(StandardCost)
FOR DaysToManufacture IN ([0], [1], [2], [3], [4])
) AS PivotTable;




Here is the result set.
Cost_Sorted_By_Production_Days    0         1         2           3       4       
AverageCost                       5.0885    223.88    359.1082    NULL    949.4105

    

             

                                                        
            
            

              
                
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