Running the code below I am expecting to see a 'null' for the check2 variable from the third row. I get a 'wrong'. Can someone explain why?
Thank You,
data ifc;
infile cards dsd;
input one two three;
cards;
1,2,3
,2,3
1,,3
1,3,
;
run;
data test;
set ifc;
check1 = ifc(one,.,'one is null');
check2 = ifc(two = 2,'right','wrong','null');
run;
I have made some modifications on your data and your code, now you can easily figure out what is going on:
data ifc;
infile cards dsd;
input one two three;
cards;
1,2,3
,0,3
1,,3
1,3,
;
run;
data test;
set ifc;
check1 = ifc(one,.,'one is null');
check2 = ifc(two,'right','wrong','null');
run;
Update: a boolean evaluation such as 'two=2' will never be missing, it is either 1 or 0, so this is why you are not getting 'null' as an outcome.
Try :
data test2;
desc = "2 = 1"; c = 2 = 1; output;
desc = "2 = ."; c = 2 = .; output;
desc = ". = ."; c = . = .; output;
run;
pric print data=test2; run;
PG
I have made some modifications on your data and your code, now you can easily figure out what is going on:
data ifc;
infile cards dsd;
input one two three;
cards;
1,2,3
,0,3
1,,3
1,3,
;
run;
data test;
set ifc;
check1 = ifc(one,.,'one is null');
check2 = ifc(two,'right','wrong','null');
run;
Update: a boolean evaluation such as 'two=2' will never be missing, it is either 1 or 0, so this is why you are not getting 'null' as an outcome.
Excellent, thank you!
Are you ready for the spotlight? We're accepting content ideas for SAS Innovate 2025 to be held May 6-9 in Orlando, FL. The call is open until September 25. Read more here about why you should contribute and what is in it for you!
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.