topic Re: Removing dups in a data/set step in SAS Programming

Removing dups in a data/set step

juanvg1972 — Tue, 14 Jun 2016 20:50:54 GMT

Hi,

I Know that a 'data/set' step work similar a 'union all' in proc sql

data taball;

set tab1 tab2;

run;

If there are dups rows in tab1 + tab2, rows that exits in both tables.., is there anyway yo remove dups in the data step?

Something similar to 'union' in proc sql

Thanks in advance,

Re: Removing dups in a data/set step

Haikuo — Tue, 14 Jun 2016 21:03:09 GMT

In general you will need an additional step, such as proc sort with nodupkey option. But if both of your incoming data are presorted by the keys, you may rub in dedup process in one data step as such:

data h1;
input a b;
cards;
1 11 
1 22 
2 12 
;

data h2;
input a b;
cards;
1 11 
2 16 
;

data want;
set h1 h2;
by a b;
if first.b;
run;