I have the following table with the month and year separated that I would like to join to create a date (as I do not have day this can be set to the first)
Measurement mm yyyy 15000 1 2014 16000 2 2014 15000 5 2013 16000 3 2014 15000 4 2014 16000 5 2014 15000 6 2013 16000 7 2012
so I would like the output as:
15000 01/01/2014
16000 01/02/2014
etc.
only for the last 2 years.
Is this possible?
Thanks
SELECT Measurement,DT FROM
(
SELECT Measurement,DENSE_RANK() OVER(ORDER BY YYYY DESC) RNK,
CONVERT(varchar(11),'01'+'/'+CAST(MM AS VARCHAR(2))+'/'+CAST(YYYY AS VARCHAR(4)),103) DT
FROM #TEMP
)TAB
WHERE RNK IN(1,2)
UPDATE
I am updating as per your new requirement
Here we will get all month and LEFT JOIN
with you table
;WITH CTE1 AS
(
SELECT 1 ID, CAST('01/01/2013' AS DATE) DT
UNION ALL
SELECT ID+1,DATEADD(MONTH,1,DT) FROM CTE1
WHERE ID<12
)
SELECT ID,DATENAME(MONTH,DT) [MONTH],TP.*,
DENSE_RANK() OVER(ORDER BY YYYY DESC) RNK
INTO #NEWTABLE
FROM CTE1
LEFT JOIN TEMP TP ON CAST(TP.MM AS NUMERIC(3,0)) = CAST(CTE1.ID AS NUMERIC(3,0))
Now we declare 2 variables, first variable to get values to show rows of month as columns and the second one to replace NULL with zero
DECLARE @cols NVARCHAR (MAX)
DECLARE @NullToZeroCols NVARCHAR (MAX)
SELECT @cols = COALESCE (@cols + ',[' + [MONTH] + ']',
'[' + [MONTH] + ']')
FROM (SELECT DISTINCT ID,[MONTH] FROM #NEWTABLE) PV
ORDER BY ID
SET @NullToZeroCols = SUBSTRING((SELECT ',ISNULL(['+[MONTH]+'],0) AS ['+[MONTH]+']'
FROM(SELECT DISTINCT [MONTH],ID FROM #NEWTABLE GROUP BY [MONTH],ID)TAB
ORDER BY ID FOR XML PATH('')),2,8000)
Now we select the last two years in your table and pivot it
DECLARE @query NVARCHAR(MAX)
SET @query = 'SELECT yyyy,' + @NullToZeroCols + ' FROM
(
SELECT yyyy, [MONTH], Measurement FROM #NEWTABLE
WHERE RNK IN(1,2)
) x
PIVOT
(
SUM(Measurement)
FOR [MONTH] IN (' + @cols + ')
) p
WHERE yyyy IS NOT NULL
ORDER BY yyyy;'
EXEC SP_EXECUTESQL @query
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