Hello,
I am required to report incidents of X by year, state, mode of transport.
I have a decade worth of data and I used proc sql to count the incidents by mode of transport.
The problem is that I get no 0 counts, so I have some missing rows for some year+state+mode combinations.
How do I fix this issue? I want to have all years and all states and all modes showing with 0s as the count, but the 0 count rows just don't appear.
PROC SQL;
CREATE TABLE WANT AS SELECT
YEAR, STATE, MODE, count(MODE) AS VALUE FROM HAVE
GROUP BY YEAR, STATE, MODE; QUIT;
I think I really overcomplicated this!
No need to use proc sql here. proc freq does a wonderful job...
If you ever need to do this counting with SQL, here is a way to do it:
PROC SQL;
CREATE TABLE WANT AS
SELECT
y.YEAR,
s.STATE,
m.MODE,
count(h.MODE) AS VALUE
FROM
(select unique year from HAVE) as y cross join
(select unique state from HAVE) as s cross join
(select unique mode from HAVE) as m natural left join
HAVE as h
GROUP BY y.YEAR, s.STATE, m.MODE;
QUIT;
(untested)
Available on demand!
Missed SAS Innovate Las Vegas? Watch all the action for free! View the keynotes, general sessions and 22 breakouts on demand.
Learn how use the CAT functions in SAS to join values from multiple variables into a single value.
Find more tutorials on the SAS Users YouTube channel.
Select SAS Training centers are offering in-person courses. View upcoming courses for: