Output Dataset created:
age
23
12
45
54
-21
43

Conclusion: So, use above IF statement only for FLAG variables which contains values as 0 or 1 (or) . or 1
to have lesser confusion. I mean use it only when you are sure about the data!

2. Extract Nth highest salary from SALARY table using Proc SQL:
data salary;
input sal;
cards;
23
12
.
45
0
54
-21
43
;
run;

%let N=3;
proc sql;
select a.sal from salary a where &N= (select count(distinct sal) from salary b where a.sal<=b.sal);
quit;

Happy Learning

http://www.bi-notes.com/

Source: See more such videos at SASsoftware channel on YouTube.

%macro DropMissingVars(DS=);
data _null_;
set &ds. (obs=1);
array num_vars[*] _NUMERIC_;
array char_vars[*] _CHARACTER_;
call symputx(‘num_qty’, dim(num_vars));
call symputx(‘char_qty’, dim(char_vars));
run;

data _null_;
set &ds. end=finished;

array num_vars[*] _NUMERIC_;
array char_vars[*] _CHARACTER_;

array num_miss [&num_qty] $ (&num_qty * ‘missing’);
array char_miss [&char_qty] $ (&char_qty * ‘missing’);

length list $ 50;

do i=1 to dim(num_vars);
if num_vars(i) ne . then num_miss(i)=’non-miss’;
end;
do i=1 to dim(char_vars);
if char_vars(i) ne ” then char_miss(i)=’non-miss’;
end;

if finished then do;
do i= 1 to dim(num_vars);
if num_miss(i) = ‘missing’ then list=trim(list)||’ ‘||trim(vname(num_vars(i)));
end;
do i= 1 to dim(char_vars);
if char_miss(i) = ‘missing’ then list=trim(list)||’ ‘||trim(vname(char_vars(i)));
end;
call symput(‘mlist’,list);
end;
run;

data &ds;
set &ds;
drop &mlist;
quit;

%mend DropMissingVars;
%DropMissingVars(DS=work.test);

The Enhanced Editor in SAS allows you to save a series of keystrokes as keyboard macros. A special form of these macros is keyboard abbreviation. The abbreviation allows you to recall stored code with a minimum of keystrokes. In the example that follows, these keystrokes form the outline of a header section of comments for a SAS program.

BUILDING AN ABBREVIATION
By using an abbreviation, we will only need to type this code once. E.g. the following comment is to be
inserted into the top of each SAS program that you write.

/*=====================================================
Project : The project name
Program : 01_client_name_project_purpose.sas
Version : Version Number
Purpose : Brief description of the code and its purpose
Author : Name of the author
Date : Date of creation of the code
Sub Macros : Names of macros if used
Reviewer : Name of the reviewer
Notes : Any notes or remarks about the code
======================================================*/
To add this header as an abbreviation, select the pull down menus Tools and Add Abbreviation.

The Add Abbreviation dialog box is then displayed (see below). In the first dialog space, enter a name for the new abbreviation. This becomes a keyboard macro, so you must select a name that has not already been used. Then type (or more practically paste) the substitution text into the ‘Text to insert for abbreviation’ dialog space and press Ok.

USING THE ABBREVIATION
Whenever you want to use an abbreviation, simply type in the name of the abbreviation while in the Enhanced Editor. As soon as the last letter of the abbreviation has been entered, a small pop-up ‘tip’ text box containing the first few digits of the abbreviation is displayed. If at that point you press the TAB key the name of the abbreviation will be replaced by the text that you stored.
The following screen shot shows that the name of the HEADER abbreviation has been entered in the Enhanced Editor and the first few characters of the text to be substituted is shown in the pop-up ‘tip’ box.

As soon as you press the TAB key the abbreviation name is replaced by the stored text.

Original:http://analysis-reporting.blogspot.com/2011/02/sas-keyboard-macros-and-abbreviations.html

Source: http://blogs.sas.com/

data inputdata;
input var1 $ var2 $ var3 $;
cards;
pavan kumar rao
ramu pavan reddy
vijay chari vikas
pavannn again came
;
run;

data found (keep=rownum varname keyword);
set inputdata;
array google(*) _char_;
keyword=’pavan’;
do i=1 to dim(google);
if index(google(i),strip(keyword)) then do;
rownum=_n_;
varname=vname(google(i));
output;
end;
end;
run;

*Happy Learning!!

More macro debugging with MAUTOCOMPLOC System option: Displays in the SAS log the source location of the autocall macros when the autocall macro is compiled.

Whats new in SAS 9.3? Read here:
http://support.sas.com/documentation/cdl/en/whatsnew/64209/HTML/default/viewer.htm#titlepage.htm

Following are the few questions I found interesting and trying to solve one by one. Of course, I can find answers in Google, but my main agenda will move out of track….Decided not to use Google, only my own brain
You can also try these….

1. There are 25 horses and 5 race tracks (only 1 horse can run on 1 track). How many races need to be run to select the top 5 horses?
2. Having an infinite supply of water and two containers, one for 3 liters and one for 5 liters, how would you measure 4 liters?
3. You are on a game show. There are three doors. Behind one of them is a prize; the other two have coal. The host knows which door holds the prize. You choose door #1. Before it is opened, the host opens door #3 and reveals a lump of coal. You have the choice to stick with the door you chose originally or switch to door #2. What do you do?
4. Three friends with different salaries need to find out their average salary without revealing individual salaries to each other. How?
5. How many scale measurements does it take to know which of eight balls weighs the most? How many would 28 balls take?
6. You are a new manager. On your first day, your senior manager tells you that sales have dropped 50% from the previous quarter. What are the 3 questions you would ask?
7. If two cars are traveling in a two lap race on a track of any length, one going 60 mph and the other going 30mph, how fast will the slower car have to go to finish at the same time?
8. How to measure 9 minutes using only a 4 minute and 7 minute hourglass?
9. You are in a room with 3 switches which correspond to 3 bulbs in another room and you don’t know which switch corresponds to which bulb. You can only enter the room with the bulbs once. You can NOT use any external equipment (power supplies, resistors, etc.). How do you find out which bulb corresponds to which switch?