/*  C07S2D02.sas  */

options ERRORCHECK=NORMAL;
libname ia 'c:\workship\winsas\effi';
	
proc sort data = ia.Schedule out = schedule;
		by FlightNumber ScheduledDate;
run;

proc print data = schedule;
		title 'Schedule for International Airlines';
run;

options ERRORCHECK=STRICT;
libname ia 'c:\workship\winsas\effi';
		
proc sort data = ia.Schedule out = schedule;
		by FlightNumber ScheduledDate;
run;

proc print data = schedule;
		title 'Schedule for International Airlines';
run;