topic Count the number of individuals. in SAS Programming

Count the number of individuals.

attjooo — Tue, 06 May 2014 13:07:48 GMT

I have one table A with one variable ID ( for identity ) and another table B, with variables ID, CITY, VAR3, VAR4.

In table A each ID occurs only once.

In table B each ID can have more then one record.

I want the number of ID:s in each CITY. An ID should be counted in each city it occurs, so the total number could be more than the number of individuals in table A.

The result should be presented in a table C, with variables CITY and N, where N = number of individuals in each city.

I think there is no need to use table A.

Do you have any suggestions how to solve this problem?

Thanks for any help.

Re: Count the number of individuals.

DBailey — Tue, 06 May 2014 13:09:02 GMT

proc sql;

create table want as

select

b.city,

count(distinct a.id) as Distinct_IDs

from

inner join b

on a.id=b.id

group by b.city;

quit;

Re: Count the number of individuals.

RW9 — Tue, 06 May 2014 13:10:10 GMT

Hi,

Well, you wouldn't need A as it doesn't add anything. Try:

proc sql;

create table C as

select distinct CITY,

count(ID) as N

from B

group by CITY;

quit;

Re: Count the number of individuals.

DBailey — Tue, 06 May 2014 13:33:19 GMT

true...unless there may be IDs in table B that you don't want counted...or if you needed other attributes on table A that weren't included in B....(assumes facts not in evidence).