How to select month wise data for year from sql server - sql

Question

I have a user table where data is about 20 years old.
I want to fetch month wise data from CreatedOn column that is (2014-07-08 17:44:00) and if data is not available for any month then I want 0 for this month
Example
Month data year
jan 34 2014
feb 56 2014
march 0 2014
apr 23 2014
I am using the following query but it's not working:
with cte(monno , monname ) as(
select 1, 'Jan' union all
select 2, 'Feb' union all
select 3, 'Mar' union all
select 4, 'Apr' union all
select 5, 'May' union all
select 6, 'Jun' union all
select 7, 'Jul' union all
select 8, 'Aug' union all
select 9, 'Sep' union all
select 10, 'Oct' union all
select 11, 'Nov' union all
select 12, 'Dec'
)
SELECT DISTINCT monname
,monno
,count(CreatedOn) OVER (PARTITION BY datepart(year, CreatedOn),DATEPART(MONTH, CreatedOn))
FROM Contributors_tbl a
RIGHT JOIN cte b ON DATEPART(MONTH, CreatedOn) = b.monno
AND datepart(year, CreatedOn) = 2014
ORDER BY monno

Answer 1

Try this Way to find Month Number AND Month Name
CREATE TABLE #TempMonth
(
MonthNum int,
MonthNames varchar(50)
)
INSERT INTO #TempMonth
SELECT STR(MONTH(DATEADD(mm, number, GETDATE())), 2) AS MonthNum,
DATENAME(month, DATEADD(month, MONTH(DATEADD(mm, number, GETDATE())), 0) - 1) AS MonthNames
FROM master.dbo.spt_values
WHERE (name IS NULL) AND (number BETWEEN 0 AND 11) ORDER BY STR(MONTH(DATEADD(mm, number, GETDATE())), 2)
SELECT * FROM #TempMonth
select distinct MonthNames,MonthNum,
count(CreatedOn) over(partition by datepart(year,CreatedOn),DATEPART(MONTH,CreatedOn))
from Contributors_tbl a
right join #TempMonth b on DATEPART(MONTH,CreatedOn) = b.MonthNum and datepart(year,CreatedOn) = 2014
order by MonthNum
DROP Table #TempMonth

Answer 2

Try This
with cte(monno , monname ) as(
select 1, 'Jan' union all
select 2, 'Feb' union all
select 3, 'Mar' union all
select 4, 'Apr' union all
select 5, 'May' union all
select 6, 'Jun' union all
select 7, 'Jul' union all
select 8, 'Aug' union all
select 9, 'Sep' union all
select 10, 'Oct' union all
select 11, 'Nov' union all
select 12, 'Dec'
)
select monname,
monno,
coalesce(cnt,0) as cnt
from cte c
outer apply (
select count(*) as cnt
from Contributors_tbl
where CreatedOn >= DATEADD(mm,c.monno - 1,'20140101')
And CreatedOn < DATEADD(mm,c.monno,'20140101')
)t
order by monno