Parsing out date9. fields for table join

[reneerabbit]

I'm needing to use a termination date in date9. format to join to another table that has monthly records with a time_id also in date9. format.  The problem is that the time_id always references the last day of the month (31JAN2015, 28FEB2015, etc.) and my termination date can be any day of the month.  I just need to use a member_id in combination with the termination month/year to join to the other table with member_id and month/year, disregarding day of the month.  SUBSTR requires characters and the dates are numeric.  I tried using MONTH(TERM_DT) but that gives the number of the month and I need the 3 character format for month.  Any other ideas?

[Reeza · Accepted solution]

Use the INTNX function to move your date to the last of the month.

intnx('month', date, 0, 'e')

[reneerabbit]

Thanks - this worked perfectly!  I didn't know just how versatile intnx was...

[Reeza]

Or the PUT function and a year month format.

put(termination_date, yymon7.)=put(time_id, yymon7.);

[Ksharp]

It would be better to post some data to explain your questions.  GROUPFORMAT + FORMAT is for such scenario .

data want;
 merge a b;
 by date groupformat ;
 format date monyy.;
run;