Group By Month, Year with example

In order to group by month you can use the SQL Server in built funtion Month().

GROUP BY MONTH([datetimecolumn])

TO group data by year you can use the in built funtion YEAR().

GROUP BY YEAR([datetimecolumn])

In order to group by month and year you can use bith YEAR() and MONTH().

GROUP BY YEAR([datetimecolumn])

Example code:

CREATE TABLE #Sales
(
    Name VARCHAR (100),
    SalesDateTime DATETIME     
)


GO
INSERT INTO #Sales
SELECT 'Product1',
       '2010-04-01 00:00:00.000'
UNION ALL
SELECT 'Product2',
       '2010-04-02 00:00:00.000'
UNION ALL
SELECT 'Product3',
       '2011-04-02 00:00:00.000'
UNION ALL
SELECT 'Product4',
       '2011-04-03 00:00:00.000'
UNION ALL
SELECT 'Product5',
       '2011-04-03 00:00:00.000'
UNION ALL
SELECT 'Product1',
       '2012-04-30 00:00:00.000'
UNION ALL
SELECT 'Product1',
       '2012-04-30 00:00:00.000'
UNION ALL
SELECT 'Product1',
       '2012-05-02 00:00:00.000'
UNION ALL
SELECT 'Product5',
       '2012-05-02 00:00:00.000'
UNION ALL
SELECT 'Product5',
       '2012-05-02 00:00:00.000'


GO
--GROUP BY Month
SELECT   count(*) AS SalesCount, MONTH(SalesDateTime) Month
FROM #Sales
GROUP BY MONTH(SalesDateTime)

--GROUP BY YEAR
SELECT   count(*) AS SalesCount, YEAR(SalesDateTime) YEAR
FROM #Sales
GROUP BY YEAR(SalesDateTime)

--GROUP BY Month and Year
SELECT   count(*) AS SalesCount, YEAR(SalesDateTime) YEAR,MONTH(SalesDateTime) Month
FROM #Sales
GROUP BY YEAR(SalesDateTime),MONTH(SalesDateTime)

GO 
DROP TABLE #Sales

sql server 2005,2008,2008 r2,2012