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Contributor
Posts: 48

# Date output to Month and Year

Hi All,

I get a dataset from a Sharepoint list and the date value is date and time.

I use the below to convert to a yymmdd and format as mmmyy

`DefinedPeriod=INPUT(PUT(Date ,8.),YYMMDD8.);format DefinedPeriod monyy7.;`

However I need to count the number of defined periods ( number of months from the dates entered)

Eaxample of Date entries are: 01/03/2017, 02/03/2017,01/04/2017, 02/04/2017.

The code below gives me a count of DefinedPeriodA of 4 when I want it to be 2.

Any help is appreciated.

`by DefinedPeriod;if first. DefinedPeriod then DefinedPeriodA= 1;`

Accepted Solutions
Solution
‎04-10-2017 07:49 PM
Contributor
Posts: 57

## Re: Date output to Month and Year

data have;
input defined_period DDMMYY10.;
datalines;
01/03/2017
02/03/2017
01/04/2017
02/04/2017
03/04/2017
;
run;
proc print;run;
data have;
set have;
format defined_period DDMMYY10.;
month=month(defined_period);
run;
proc sql;
select month,count(*) as total from have group by month;
quit;

All Replies
Super User
Posts: 2,037

## Re: Date output to Month and Year

Assigning a month format doesn't change the stored values of your date variable that is they still remain as date values displaying with your month format. I would suggest to extract month values using month function and the group by month so that you would get your desired result:

/*sample*/

data have;
input defined_period ddmmyy10.;
format defined_period ddmmyy10.;
month=month(defined_period);
datalines;
01/03/2017
02/03/2017
01/04/2017
02/04/2017
;
proc sort data=have;
by month;
run;

data want;
set have;
by month;
if first.month then count=0;
count+1;
if last.month;
run;

Regards,

Naveen Srinivasan

Solution
‎04-10-2017 07:49 PM
Contributor
Posts: 57

## Re: Date output to Month and Year

data have;
input defined_period DDMMYY10.;
datalines;
01/03/2017
02/03/2017
01/04/2017
02/04/2017
03/04/2017
;
run;
proc print;run;
data have;
set have;
format defined_period DDMMYY10.;
month=month(defined_period);
run;
proc sql;
select month,count(*) as total from have group by month;
quit;
☑ This topic is solved.