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Number of one Variable with a condition

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New Contributor
Posts: 4

Number of one Variable with a condition

Hey! 

This is my code up to now:

 

proc freq data=123;
table issr_id;
where def=1;
run;

 

I want to know the total number of issr_id with the condition def=1.

But the Problem is, there are some issr_id with have more then one def=1.

 

How can I get the total number of issr_id with def=1, without issr_id with the same number are counted muliple times? 

 

 

Hope you get my question.

Thanks!

Super User
Posts: 5,257

Re: Number of one Variable with a condition

Not sure what you actually will count the frequency on.
What does uniquely identifies row in the input table?
Data never sleeps
Frequent Contributor
Posts: 123

Re: Number of one Variable with a condition

It sounds like you're trying to get a frequency of unique issr_ids. Am I correct in assuming this? If so, before you do the proc freq, you could use PROC SQL and select distinct issr_ids, or a datastep and use by group processing to filter out issr_ids that are identical. Hope this helps.

 

Super User
Posts: 5,083

Re: Number of one Variable with a condition

It sounds like you are looking for just a single number as the output.  If so, this might do it:

 

proc sql;

select count(distinct(issr_id)) from have where def=1;

quit;

 

 

Super User
Posts: 9,681

Re: Number of one Variable with a condition

Then pick up the first obs wthin each group firstly.

 

proc sort data=123 out=_123 nodupkey;
 by def;
run;

proc freq data=_123;
table issr_id;
where def=1;
run;
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