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Merging Two data sets

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Occasional Contributor
Posts: 10

Merging Two data sets

Hello, 

 

I have two datasets called A and  B- group B is a subset of group A (everyone in group B should be in group A), and group B is the people who had an event/outcome, and ultimately I'd like to have a master dataset w. people who had an event and who had not had an event. Then I would like to have a new variable (e.g. outcome) and assign values so that everyone from B should have 1 and the rest of the people have 0. What SAS procedures should I use? Any suggestion/examples would be greatly appreciated. 

 

Thank you.

 

 

 

PROC Star
Posts: 552

Re: Merging Two data sets

This is pretty straighforward if you provide some sample data Smiley Happy

Super User
Posts: 17,874

Re: Merging Two data sets

This is data management, combing datasets, which is handled either in a data step or proc SQL. 

 

Data want;

set A B indsname=source;

 

source_dsn = source;

 

run;

 

Relevant reference, there's many examples here:

http://support.sas.com/documentation/cdl/en/basess/68381/HTML/default/viewer.htm#p19t3r1gxavpoin14jd...

Super Contributor
Posts: 264

Re: Merging Two data sets

Similar questions are asked at least daily, please use the search functionality.

 

New documentation site: http://documentation.sas.com/?cdcId=pgmmvacdc&cdcVersion=9.4&docsetId=basewn&docsetTarget=helpcenter...

 

Related to your problem: http://documentation.sas.com/?cdcId=pgmmvacdc&cdcVersion=9.4&docsetId=basess&docsetTarget=p19t3r1gxa...

Super User
Posts: 5,085

Re: Merging Two data sets

If B is a subset of A, you could use this approach:

 

proc sort data=a;

by id;

run;

 

proc sort data=b;

by id;

run;

 

data want;

merge a b (in=b);

by id;

outcome=b;

run;

 

You haven't told us the names of your variables, so I'm using ID here as the common variable to match on.

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