BookmarkSubscribeRSS Feed
🔒 This topic is solved and locked. Need further help from the community? Please sign in and ask a new question.
Amalik
Calcite | Level 5

 

Hi,

 

I want to drop the last observations from my data set but want to keep them only if the date is 29dec2017. I am using the following code, although it works perfectly fine but I am just unsure how to incorporate the date clause in it. 

 

data want(drop=count);
  set have;
  by permno descending date;
  if first.permno then count=0;
  count+1;
  if count>1;
run;

 

1 ACCEPTED SOLUTION

Accepted Solutions
cau83
Pyrite | Level 9

I added the code in CAPS below. Check the date first, then set count to zero if not that day.

data want(drop=count);
  set have;
  by permno descending date;
  IF DATE = "29DEC2017"d THEN COUNT=1;
  ELSE if first.permno then count=0;
  count+1;
  if count>1;
run;

View solution in original post

2 REPLIES 2
cau83
Pyrite | Level 9

I added the code in CAPS below. Check the date first, then set count to zero if not that day.

data want(drop=count);
  set have;
  by permno descending date;
  IF DATE = "29DEC2017"d THEN COUNT=1;
  ELSE if first.permno then count=0;
  count+1;
  if count>1;
run;
ChrisNZ
Tourmaline | Level 20

Drop the last observation? How?

This:

data want(drop=count);
  set have;
  by permno descending date;
  if first.permno then count=0;
  count+1;
  if count>1;
run;

is the same is that:

data want;
  set have;
  by permno descending date;
  if first.permno then delete;
run;

 

 

sas-innovate-2024.png

Available on demand!

Missed SAS Innovate Las Vegas? Watch all the action for free! View the keynotes, general sessions and 22 breakouts on demand.

 

Register now!

How to Concatenate Values

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.

Click image to register for webinarClick image to register for webinar

Classroom Training Available!

Select SAS Training centers are offering in-person courses. View upcoming courses for:

View all other training opportunities.

Discussion stats
  • 2 replies
  • 1600 views
  • 0 likes
  • 3 in conversation