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CamRutherford
Fluorite | Level 6

Hello,

 

I have a data step whereby I'm selecting around 50,000 customers. In the output file I have date fields (DATE9.) and I want to create an if statement that will create a value for only those dates which fall in the last 3 months. So far I have the below, please advise where I'm going wrong and how I can do this?

 

IF TXN_DATE BETWEEN TODAY() AND TODAY()-3 THEN DO;R_SCORE=50;END;

 

Thanks

1 ACCEPTED SOLUTION

Accepted Solutions
Astounding
PROC Star

SAS stores dates as referring to a particular day.  So TODAY()-3 is three days earlier.  Change it to something like TODAY()-90 and you should be fine.

 

It's possible (can't test it right now) that you can't use BETWEEN in an IF statement.  That's easy enough to change:

 

if TODAY()-90 <= TXN_DATE <= TODAY() then R_SCORE=50;

View solution in original post

4 REPLIES 4
Astounding
PROC Star

SAS stores dates as referring to a particular day.  So TODAY()-3 is three days earlier.  Change it to something like TODAY()-90 and you should be fine.

 

It's possible (can't test it right now) that you can't use BETWEEN in an IF statement.  That's easy enough to change:

 

if TODAY()-90 <= TXN_DATE <= TODAY() then R_SCORE=50;

CamRutherford
Fluorite | Level 6
Legend - thank you
RW9
Diamond | Level 26 RW9
Diamond | Level 26

Just to note @Astounding, that is assuming a base value of 30 days per month.  That may not be entirely acurate.  I would suggest using the function for it:

 

if intnx('month',today(),-3) <= txn_date <= today() then r_score=50;
Kurt_Bremser
Super User

Don't shout your code. Normal speech is sufficient (don't write code in all capitals, for readability)

 

The between operator is only available in where conditions, use this instead:

if intnx('month',today(),-3,'same') <= txn_date <=today()
then do;
  r_score = 50;
end;

Assuming that txn_date is a SAS date value, of course

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