Remove duplicate values across rows

osi814 — Tue, 07 Jun 2016 15:56:33 GMT

Hello, I need to remove duplicates in a SAS dataset but don't know how to go about it. The point of the dataset is to have all CBSAs in the nation listed in the first column. Additional columns contain every CBSA which borders the first one. The problem is that the original CBSA is also always listed as a bordering one, and I need to remove it. The other problem is that the duplicate doesn't always appear in the same column. For example, I have:

CBSA CBSA_BORD1 CBSA_BORD2 CBSA_BORD3

10140 10140 16500 36500

10180 10180 15220 45020

28300 14180 27860 28300

28500 23240 28500 41700

The bold values are the duplicates, i.e. the ones I want to remove from the dataset. The problem is that I don't know which column the duplicate will necessarily be in since it changes row to row. Is there a way to search for duplicate values across rows and remove them? What I want the final dataset to look like is:

CBSA CBSA_BORD1 CBSA_BORD2

10140 16500 36500

10180 15220 45020

28300 14180 27860

28500 23240 41700

Thank you!

Re: Remove duplicate values across rows

RW9 — Tue, 07 Jun 2016 16:07:23 GMT

Hi,

It is generally better to post test data in the form of a datastep. You can use arrays on this:

data want;
  cbsa=10140; cbsa_bord1=10140; cbsa_bord2=16500;  cbsa_bord3=36500;
  array cbsa_bord{3};
  do i=1 to 3;
    if cbsa_bord{i}=cbsa then cbsa_bord{i}=.;
  end;
run;

Re: Remove duplicate values across rows

osi814 — Tue, 07 Jun 2016 16:11:44 GMT

Perfect, don't know why I didn't think of that. Thanks so much!

topic Re: Remove duplicate values across rows in SAS Procedures

Remove duplicate values across rows

Re: Remove duplicate values across rows

Re: Remove duplicate values across rows