how to get count of month based on year in sql query?

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Hi,
i need to create a query where i will pass year as int and will get all the records in all the months of that year.

so for example if i enter 2013 the output will be like below

month  count 
jan     10 
feb     0
mar     25
apr     15
may     15
jun     14
july    12
aug     0
sep     22
oct    15 
nov    26 
dec     0

i tried below query which gives me output like below

jan     10 

mar     25
apr     15
may     15
jun     14
july    12

sep     22
oct    15 
nov    26

here is my query.

SQL

select month(DepotArrivalDate), count(*)
from tbl_CMS_Container
WHERE     year(DepotArrivalDate) = '2013' 
group by month(DepotArrivalDate)

the issue is i dont have any record for feb / dec month so this query is not giving me any output for that row but i want that if that do not have it should show 0 like first output.

Posted 18-Apr-14 2:53am

ravikhoda

Updated 6-Jan-20 2:49am

Aarti Meswania

v3

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NeverJustHere · Answer 1 · 2014-04-18T03:21:00

Solution 1

Create a table variable with the full set of months, and populate with the twelve options.

Then use left join to get what you want.

Something like:

SQL

declare @Months table ( Month varchar(3))

insert into @Months values ('Jan'), ('Feb'), ('Mar'), .... 

select M.Month, count(*)
from @Months M
left join ....

Posted 18-Apr-14 3:21am

NeverJustHere

Updated 6-Jan-20 2:57am

v2

Comments

phil.o 6-Jan-20 8:57am

I changed the code tag to a pre tag, which is more suitable for multiline code-blocks. Hope you don't mind :)

W∴ Balboos, *GHB* · Answer 2 · 2014-04-18T03:28:00

You may wish to create a table with all of the month/year/count combos you expect - then update that with your results. You may wish to initialize the count field of the table w/zeros.

Another option, more generalized, would employ a single list of Jan - Dec (1-12) and you may then use a LEFT JOIN to your query, matching only the month's numeric values: good for only one year at a time, but always good.

When creating the return set from the LEFT-JOIN option, you may use ISNULL(your-count-column, 0) to replace the nulls from missing months with 0's

Member 14708330 · Answer 3 · 2020-01-06T02:49:00

select [month],[count] from (SELECT
SUM (CASE WHEN DATEPART (MONTH,RR.checkin) = 1 THEN 1 ELSE 0 END) 'Jan',
SUM (CASE WHEN DATEPART (MONTH,RR.checkin) = 2 THEN 1 ELSE 0 END) 'Feb',
SUM (CASE WHEN DATEPART (MONTH,RR.checkin) = 3 THEN 1 ELSE 0 END) 'Mar',
SUM (CASE WHEN DATEPART (MONTH,RR.checkin) = 4 THEN 1 ELSE 0 END) 'Apr',
SUM (CASE WHEN DATEPART (MONTH,RR.checkin) = 5 THEN 1 ELSE 0 END) 'May',
SUM (CASE WHEN DATEPART (MONTH,RR.checkin) = 6 THEN 1 ELSE 0 END) 'Jun',
SUM (CASE WHEN DATEPART (MONTH,RR.checkin) = 7 THEN 1 ELSE 0 END) 'Jul',
SUM (CASE WHEN DATEPART (MONTH,RR.checkin) = 8 THEN 1 ELSE 0 END) 'Aug',
SUM (CASE WHEN DATEPART (MONTH,RR.checkin) = 9 THEN 1 ELSE 0 END) 'Sep',
SUM (CASE WHEN DATEPART (MONTH,RR.checkin) = 10 THEN 1 ELSE 0 END) 'Oct',
SUM (CASE WHEN DATEPART (MONTH,RR.checkin) = 11 THEN 1 ELSE 0 END) 'Nov',
SUM (CASE WHEN DATEPART (MONTH,RR.checkin) = 12 THEN 1 ELSE 0 END) 'Dec'

FROM Orders RR WITH(NOLOCK)
WHERE YEAR(RR.checkin)= 2020) tb1
UNPIVOT (
count for [month] in (Jan,Feb,Mar,Apr,May,Jun,Jul,Aug,Sep,Oct,Nov,Dec)

) unpvt

how to get count of month based on year in sql query?

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