DATA Step, Macro, Functions and more

Check word present in a macro variable?

Accepted Solution Solved
Reply
Contributor
Posts: 27
Accepted Solution

Check word present in a macro variable?

Hi,

I have a long macro variable (check) and need to scan  the presence of a word  using a macro and in a data step ? How can I do that?

 

%let check=This is Year 2017, Month 12, Day 12;

data a;
var= "Month";
run;


Accepted Solutions
Solution
‎12-17-2017 11:27 AM
Super User
Posts: 6,541

Re: Check word present in a macro variable?

[ Edited ]

A slight change accomplishes this:

 

if findw("&string", trim(var), ',') > 0 then flag=1;

 

This change tells the function to use commas as the only delimiters.  Note that this fails if the original macro variable contains blanks after the commas.

View solution in original post


All Replies
PROC Star
Posts: 1,328

Re: Check word present in a macro variable?

Can you please elaborate the task that you want to accomplish?

Super User
Posts: 6,541

Re: Check word present in a macro variable?

The safest tool is probably the FINDW function:

 

%let check=This is Year 2017, Month 12, Day 12;

data test;

var="Month";

if findw("&check", var) > 0 then flag=1;

else flag=0;

run;

 

You might want to consider whether upper vs. lower case matters:

 

if findw(upcase("&check"), upcase(var)) > 0 then flag=1;

 

 

 

Contributor
Posts: 27

Re: Check word present in a macro variable?

Posted in reply to Astounding

Thanks for your reply.  I should have posted bit more clearly. How do we flag here? Need to get the third one flagged.


%let string=MONTH 1-ABC MONTH 0,MONTH 1-ABC MONTH 2,MONTH 1-ABC MONTH 3,MONTH 1-ABC MONTH 3,MONTH 5-ABC MONTH 6;
%put &=string;

 

data test;
length var $100;
var="MONTH"; output;
var="MONTH 1-ABC MONTH 1"; output;
var="MONTH 1-ABC MONTH 2"; output;
var="MONTH 1-ABC MONTH 8"; output;
run;

data test;
set test;
if findw("&string", var) > 0 then flag=1;
else flag=0;

run;

 

Solution
‎12-17-2017 11:27 AM
Super User
Posts: 6,541

Re: Check word present in a macro variable?

[ Edited ]

A slight change accomplishes this:

 

if findw("&string", trim(var), ',') > 0 then flag=1;

 

This change tells the function to use commas as the only delimiters.  Note that this fails if the original macro variable contains blanks after the commas.

Contributor
Posts: 27

Re: Check word present in a macro variable?

Posted in reply to Astounding

Excellent, Thanks.

☑ This topic is solved.

Need further help from the community? Please ask a new question.

Discussion stats
  • 5 replies
  • 254 views
  • 0 likes
  • 3 in conversation