Three column SQL PIVOT

Question

How do I do a sql pivot of data that looks like this, USING the SQL PIVOT command ?

id           |    field     |   value
---------------------------------------
1            |    year      |   2011
1            |    month     |   August
2            |    year      |   2009
1            |    day       |   21
2            |    day       |   31
2            |    month     |   July
3            |    year      |   2010
3            |    month     |   January
3            |    day       |   NULL

Into something that looks like this:

id  |  year  |  month  |  day
-----------------------------
1     2011     August    21
2     2010      July     31
3     2009     January   NULL

Answer 1

SELECT
id,
MAX(CASE WHEN RK=3 THEN VAL ELSE '' END) AS "YEAR",
MAX(CASE WHEN RK=2 THEN VAL ELSE '' END) AS "MONTH",
MAX(CASE WHEN RK=1 THEN VAL ELSE '' END) AS "DAY"

FROM 
(
SELect
ID,
ROW_NUMBER() OVER(PARTITION BY ID ORDER BY YEAR1 ASC) RK,
VAL
FROM TEST3)A
GROUP BY 1
ORDER BY 1;

Answer 2

Try something like this:

DECLARE @myTable AS TABLE([ID] INT, [Field] VARCHAR(20), [Value] VARCHAR(20))
INSERT INTO @myTable VALUES ('1', 'year', '2011')
INSERT INTO @myTable VALUES ('1', 'month', 'August')
INSERT INTO @myTable VALUES ('2', 'year', '2009')
INSERT INTO @myTable VALUES ('1', 'day', '21')
INSERT INTO @myTable VALUES ('2', 'day', '31')
INSERT INTO @myTable VALUES ('2', 'month', 'July')
INSERT INTO @myTable VALUES ('3', 'year', '2010')
INSERT INTO @myTable VALUES ('3', 'month', 'January')
INSERT INTO @myTable VALUES ('3', 'day', NULL)

SELECT [ID], [year], [month], [day]
FROM
(
      SELECT [ID], [Field], [Value] FROM @myTable
) t
PIVOT
(
    MIN([Value]) FOR [Field] IN ([year], [month], [day]) 
) AS pvt
ORDER BY pvt.[year] DESC

Which will yield results of:

ID  year    month   day
1   2011    August  21
3   2010    January NULL
2   2009    July    31

Answer 3

;WITH DATA(id,field,value) AS
(
SELECT 1,'year','2011' UNION ALL
SELECT 1,'month','August' UNION ALL
SELECT 2,'year','2009' UNION ALL
SELECT 1,'day ','21' UNION ALL
SELECT 2,'day ','31' UNION ALL
SELECT 2,'month','July' UNION ALL
SELECT 3,'year','2010' UNION ALL
SELECT 3,'month','January' UNION ALL
SELECT 3,'day ',NULL
)
SELECT id,
       year,
       month,
       day
FROM   DATA PIVOT (MAX(value) FOR field IN ([year], [month], [day])) AS Pvt