Sum a variable if other variables have a spesific combination or if they match

[HelpPlease]

I hope someone can help me. I have a large data sets with four variables. The first 3 variables have duplicate rows where only the last variable is a different number. How do I sum the last variable for all the combinations of the first three variables? So if the first 3 variables as in B_CODE P_CODE and DATE have the same combination I want to sum the the ACTUAL variable.

[Community_Guide]

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[Reeza]

I think you're going to need to post some sample data so we understand what you want. 

Ideally include what you have, what you want, and what you've tried.

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@HelpPlease wrote:

I hope someone can help me. I have a large data sets with four variables. The first 3 variables have duplicate rows where only the last variable is a different number. How do I sum the last variable for all the combinations of the first three variables? So if the first 3 variables are equal I want to sum the last variable.

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[Astounding · Accepted solution]

I think this is what you are asking for.  It creates a SAS data set holding the totals of the last variable, for every possible combination of the first three:

proc summary data=have nway;

class var1 var2 var3;

var var4;

output out=want (drop=_type_ _freq_) sum=total_var4;

run;

The program requires some tweaking if it is possible that any of your first three variables ever take on a missing value.

[HelpPlease]

Thank you I really appreciate it, it worked!

[Reeza]

https://github.com/statgeek/SAS-Tutorials/blob/master/proc_means_basic.sas

Please don't post PDF of images. Post text data - if your problem is more complex you're essentially asking someone to type your data to help you out.