Hi there,
I get the above error message (Error: Expression using equals (=) has components that are of different data types) upon running the following code:
%MACRO eventsum(period=);
proc sql;
create table disease_standard as
select year, age_group, sex, disease
from dataset_name
where disease=1 and year=.
quit;
run;
%MEND eventsum;
%eventsum(period=2013)
%eventsum(period=2014)
%eventsum(period=2015)
%eventsum(period=2016)
%eventsum(period=2017)
I'm not sure what the error message means, and how to go about fixing it. Any help?
Thanks
You miss semicolons on all lines executing the macro. It should be:
%eventsum(period=2013);
%eventsum(period=2014);
%eventsum(period=2015);
%eventsum(period=2016);
%eventsum(period=2017);
Alternatively, if have semicolons and this is just typo on post,
then probably PERIOD is defined as charcter and you have to code execution like:
%eventsum(period='2013');
%eventsum(period='2014');
%eventsum(period='2015');
%eventsum(period='2016');
%eventsum(period='2017');
Post your new code and log.
Ideally, a proc contents on your data set as well, unless you're sure you've corrected the type issue already.
Check your variable types for the two variables in your WHERE clause. If either are character they require quotes around the values.
where disease='1' and year=&period
or
where disease=1 and year="&period"
Or possibly both combined.
proc sql; describe table dataset_name;
quit;
the log will show you the data structure;
use quotes accordingly
as noted by an earlier responder.
Ron Fehd data structure!
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