topic Re: HOW TO SEE DUPLICATES BY TWO VARIABLES IN A DATASET in New SAS User

HOW TO SEE DUPLICATES BY TWO VARIABLES IN A DATASET

d6k5d3 — Tue, 11 Dec 2018 01:25:18 GMT

I know if I code like:

proc sort data=zzz nodupkey;

by aa cc; run;

it will remove duplicate entries which have identical values in aa & cc. How can I see, instead of removing, the duplicates which got removed?

Much thanks.

Regards.

Re: HOW TO SEE DUPLICATES BY TWO VARIABLES IN A DATASET

learsaas — Tue, 11 Dec 2018 01:29:33 GMT

dupout=

Re: HOW TO SEE DUPLICATES BY TWO VARIABLES IN A DATASET

d6k5d3 — Tue, 11 Dec 2018 01:42:15 GMT

Sorry. I do not get how to use this. Where can I plug this in my code above?

Re: HOW TO SEE DUPLICATES BY TWO VARIABLES IN A DATASET

r_behata — Tue, 11 Dec 2018 01:49:00 GMT

proc sort data=zzz nodupkey dupout= xyz;
by aa cc; 
run;

Re: HOW TO SEE DUPLICATES BY TWO VARIABLES IN A DATASET

SASKiwi — Tue, 11 Dec 2018 01:52:01 GMT

Here is a link to the documentation for DUPOUT: https://documentation.sas.com/?docsetId=proc&docsetTarget=p02bhn81rn4u64n1b6l00ftdnxge.htm&docsetVersion=9.4&locale=en

Re: HOW TO SEE DUPLICATES BY TWO VARIABLES IN A DATASET

novinosrin — Tue, 11 Dec 2018 02:21:20 GMT

Hi @d6k5d3 While dupout and such options offer pretty straight forward solutions, I'd recommend to get intuitive knowledge on by group processing in SAS, SQL, Proc freq, and in general counting techniques. A grasp of that will make you comfortable. The idea is to differentiate unique records, unique keys etc. The more you dig, you will venture into other concepts such as indexes and beyond or in other words one understanding leads to the next. Have fun!