Answer / ramesh

First calculate age in B datase


data age;
set b;
age=int(intck('day',bday,today())/365.25);
run;

sort both datasets by the age key variable and Use the
merge statement to combine the both datasets

Answer / vishal

Calculate age in dataset B by using the following code:
data ages;
set b;
retain current;
if _n_=1 then current=today();
format bday current worddate20.;
age=int(intck('month',bday,current)/12);
if month(bday)=month(current) then
age=age-(day(bday)>day(current));
run;

Source: http://support.sas.com/kb/24/567.html

Answer / alok karan

First calculate age in BB dataset:

data bbb;
set bb;
age=round(yrdif(birthdate,today(),'Actual'),1);
run;
proc sort data=bbb;
by age;
drop birthdate;
run;

Now merge both dataset by age variable:
data abc;
merge aa bbb;
by age;
run;

What is the difference between one to one merge and match merge? Give an example.

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Differentiate between ceil and floor functions.

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i have multiple .csv files in a unix directory. every file is having variable names as header.even for empty file also. suppose take 3 files a.csv b.csv c.csv a.csv contains data as name;age,salary; raja;34;4000; ravi;33;5000; kumar;25;3000; b.csv contains data as name;age,salary; ajay;40;4500; and c.csv contains name;age,salary; (only headers) Now i want to import and append all these files in to a single dataset. i tried infile statement with *.csv to import all at a time. but i m not getting correct data. please help me . its urgent. thank you in advance

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Explain the use of proc gplot? : sas-grid-administration

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