topic Count based on ID in SAS Programming

Count based on ID

raddad34 — Thu, 17 Feb 2022 01:40:12 GMT

Hello everyone, I have a large dataset that looks like this:

data have;
input customerID product;
datalines;
A1 P4
A1 P6
A1 P2
A2 P3
A2 P4
A3 P1
;

I want to get a count of how many products each customerID has assigned to it. Each row is unique so there is no need to account for duplicates.

This is what I'm trying to achieve:

data want;

input customerID product count;
datalines;
A1 P4 3
A1 P6 3
A1 P2 3
A2 P3 2
A2 P4 2
A3 P1 1
;

Re: Count based on ID

r_behata — Thu, 17 Feb 2022 01:46:31 GMT

data have;
input customerID $ product $;
datalines;
A1 P4
A1 P6
A1 P2
A2 P3
A2 P4
A3 P1
;
run;

proc SQL;
Create table want as
select customerID,
	   product,
	   count(1) as count
from have
group by customerID;
Quit;

Re: Count based on ID

mkeintz — Thu, 17 Feb 2022 02:16:00 GMT

If the data are sorted by customerid:

data want;
  set have (in=firstpass) have (in=secondpass);
  by customerid;
  if first.customerid then count=0;
  count + firstpass;
  if secondpass;
run;