topic Data comparison in SAS Programming

Data comparison

SherriF — Sat, 20 Feb 2016 22:43:46 GMT

Hi,

I have two data sets. One containes a list of formal fortuen 500 companies' name. The other contains patent information for a lot of companies which are extracted online, so the format of the companies' name may differ from the first data set, even if they refer to the same company.

What I wanted to do is to select out the patent information for the companies who are among the fortune 500 companies. So, I have to compare the compare the names between the two data sets. I used soundslike (=*) statemete, and treat each of the fortune 500 companies as a macro variable. As the follwoing code shows:

data _null_;
set company0;
suffix=put(_n_,5.);
call symput(cats('company',suffix), company);
run;

data selected_patent;
set patent0;
where organization_name =* "&company1.";
company=put("&company1.", 25.);
run;

&company1. stands for the one of the fortune companies, but I have 500 macro variables like this.

one way I can think of is to run macro program, but I have to list 500 call statement for macro program!!!!!!

Is there any easy way to finish this task, instead of using calling macro program for 500 times?

Thanks,

Sherri

Re: Data comparison

Reeza — Sat, 20 Feb 2016 23:52:40 GMT

I usually recommend the solution in this thread, primarily FriedEgg's. He also, suggests a open source tool called the Link King, if you can install software. That's usually not an option where I work.

https://communities.sas.com/t5/SAS-Procedures/Name-matching/td-p/82780

Otherwise, you might want to consider a data step solution if that's an option. You can load the names into a temporary and loop through them, there should be code that I wrote for that solution somewhere on here.

Calling a macro 500 times is easy if you use call execute, but not efficient.

Re: Data comparison

LinusH — Sun, 21 Feb 2016 09:16:34 GMT

Am I missing something, or can't this be solved in a simple SQL join?

Re: Data comparison

SherriF — Sun, 21 Feb 2016 16:12:50 GMT

No, you didn't miss anything. You are right! I lost myself!!

Thank you!
Sherri

Re: Data comparison

Reeza — Sun, 21 Feb 2016 17:43:57 GMT

Yes, it's a straightforward SQL, but the next step is typically how do I do this 'fuzzy' comparison with different options which is what FriedEgg's solution covers, using SOUNDEX, COMPGED and other comparison operators.

Re: Data comparison

SherriF — Sun, 21 Feb 2016 17:50:14 GMT

Good resource! Thank you so much! Learned new stuff!!