Hi everyone,
I got an unexpected error when I tried to run:
WHERE prxmatch('/prx-pattern/', catx(' ', of charvar1-charvar100))
instead of
IF prxmatch('/prx-pattern/', catx(' ', of charvar1-charvar100))
where no error occurs.
If I write "charvar1, charvar2, charvar3 ..." instead of "OF charvar1-charvar100" the program is running without errors, but I wonder why this error occurs anyway and how can I sum up the variables like when using the IF statement, so that I don't need to enumerate all 100 variables.
Many thanks in advance,
Curt
Hi @Curt,
You are not the first who encounters the fact that the OF operator is not available in WHERE statements and WHERE= dataset options (see, e.g., this 2021 thread). I think the documentation (like the second link provided by PaigeMiller) should mention this more clearly.
In your case you could create a DATA step view using the IF statement and then apply PROC FREQ to that view.
Example:
data sel / view=sel; set sashelp.us_data; if max(of change:)>20; run; proc freq data=sel; tables region; run;
Thanks for your reply.
I know that it would be better to use the IF STATEMENT instead of the WHERE STATEMENT, however, I want to do PROC FREQ where listed variables have one of the listed values. So it is not possible to use the IF STATEMENT instead.
Hi @Curt,
You are not the first who encounters the fact that the OF operator is not available in WHERE statements and WHERE= dataset options (see, e.g., this 2021 thread). I think the documentation (like the second link provided by PaigeMiller) should mention this more clearly.
In your case you could create a DATA step view using the IF statement and then apply PROC FREQ to that view.
Example:
data sel / view=sel; set sashelp.us_data; if max(of change:)>20; run; proc freq data=sel; tables region; run;
Great suggestion!
Thanks to everyone!
The "charvar1-charvar100" is one type of SAS variables lists (to be precise: Numbered Range Lists).
Documentation:
SAS Variables Lists:
https://documentation.sas.com/doc/en/lrcon/9.4/p0wphcpsfgx6o7n1sjtqzizp1n39.htm
OF operator with SVL:
https://documentation.sas.com/doc/en/lrcon/9.4/n1t04bwpt1jkadn1a5mk35we2yif.htm
SAS variables list are PDV construct, i.e. they are available _only_ in/for the PDV vector.
And as the second link provided by @PaigeMiller (https://documentation.sas.com/doc/en/lrcon/9.4/p04fy20d8il3nfn1ssywe4f25k27.htm) says:
"A WHERE expression tests the condition before an observation is read into the PDV."
So, since WHERE works "before" PDV - there is no chance to use PDV's constructs...
Bart
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.