topic raw date file in SAS Programming

raw date file

beatraca — Mon, 14 Nov 2016 22:44:58 GMT

1---+----10---+----20---+---
FRANCE,INDIA,10MAR2004
ITALY,USA,10/20/2004
SAFRICA,FRANCE,17JUN2004
AMERICA,FRANCE,12/31/2004
FRANCE,USA,20JAN2004
ITALY,USA,08/19/2004

The following SAS program is submitted using this file as input:

data work.flights;
   infile 'file-specification' dsd;
   input from_co $ @;
      if from_co='FRANCE' or from_co='SAFRICA' then do;
         input to_country $ flightdate : date9.;
         output;
      end;
run;

How many observations does the Work.Flights data set contain? I don,t understant because is 3

Re: raw date file

Reeza — Mon, 14 Nov 2016 23:03:48 GMT

The trick to understanding code is to comment each line.

Ones you don't understand will stand out.

Is there a specific piece of the code you're not understanding?

Re: raw date file

ballardw — Wed, 16 Nov 2016 17:16:37 GMT

When there are explicit OUTPUT statements data is only written to the data set when the Output is executed. The Output in the example is only executed when the condition :

if from_co='FRANCE' or from_co='SAFRICA'

is true.

So when the from country is FRANCE or SAFRICA is the only time you get results.