Hi,
I have a panel dataset like below.
data have;
input firmID $ Year ;
datalines;
A 1995
A 1996
A 1997
A 1998
B 1997
B 1998
B 1999
B 2000
;
run;
I would like to delete the first two years for each firm. The expected output is below.
data have;
input firmID $ Year;
datalines;
A 1997
A 1998
B 1999
B 2000
;
run;
What program do I need to use? Thanks!!
Use a counter with by-group processing, and a subsetting if:
data want;
set have;
by firmid;
if first.firmid
then counter = 1;
else counter + 1;
if counter > 2;
drop counter;
run;
Use a counter with by-group processing, and a subsetting if:
data want;
set have;
by firmid;
if first.firmid
then counter = 1;
else counter + 1;
if counter > 2;
drop counter;
run;
Don't miss out on SAS Innovate - Register now for the FREE Livestream!
Can't make it to Vegas? No problem! Watch our general sessions LIVE or on-demand starting April 17th. Hear from SAS execs, best-selling author Adam Grant, Hot Ones host Sean Evans, top tech journalist Kara Swisher, AI expert Cassie Kozyrkov, and the mind-blowing dance crew iLuminate! Plus, get access to over 20 breakout sessions.
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.