SAS: create new column based on regex logical statement-CodePudding

I have a large dataset where one column contains free text. I wish to create a new column based on whether this free text contains a regular expression.

Eg: I want to know whether this column contains the text GnRH, or those letters in any case, and create a new column with a flag to indicate if this is true or not.

CodePudding user response：

Try this

data have;
input text $20.;
datalines;
Not in this line  
In GnRH this line 
Not here either   
This one GNRH too 
;

data want;
   set have;
   dummy = prxmatch('/gnrh/i', text) > 0;
run;

CodePudding user response：

FIND or INDEX work as well, and slightly easier to understand.

DUMMY = find(text, "gnrh", 'it') > 0;