topic Re: How to create a complete date values from partially provided dates in SAS Programming

How to create a complete date values from partially provided dates

knveraraju91 — Fri, 22 Jul 2016 18:24:11 GMT

Dear,

I need create a an ENDDATE variable from date variable values.

If complete date is provided then the date will be the end date.

If Month provided then last day of the month will be the ENDDATE value.
If year only provided then last day of the year will be the ENDDATE value.

Please help

id date
1 2015-01-06
2 2015-11
3 2015
4 2015-02

Output needed:

ENDDATE

06JAN2015
30NOV2015
31DEC2015
28FEB2015

Re: How to create a complete date values from partially provided dates

PGStats — Fri, 22 Jul 2016 19:08:51 GMT

Generate a valid SAS date and then use SAS function intnx()

enddate = intnx("MONTH", date, 0, "END");

/* or */

enddate = intnx('YEAR", date, 0, "END");

Re: How to create a complete date values from partially provided dates

ballardw — Fri, 22 Jul 2016 19:58:12 GMT

Here's one way for character values.


data want;
   set have;
   /* assumes your "date" is CHARACTER*/
   Enddate = input(date,anydtdte32.);
   /* missing is because year provides insufficient information to anydtdte*/
   /* so assign last day of dec as day and month*/
   if missing(enddate) then enddate = mdy(12,31,input(date,best4.));
   /* anydtdte when day of month is missing assigns day to be 1, this is 
   one way to advance to last day of current month */
   if length(date)=7 then enddate=intnx('month',enddate,1)-1;
   format enddate date9.;
run;