options msglevel=i;

*** Example 1;

data rdu2000;
	set ia.sale2000;
	if Origin = 'RDU';
run;

*** Example 2;

proc print data=ia.sale2000;
	where Origin = 'RDU' or Date = '01dec2000'd;
run;

*** Example 3;

proc print data=ia.sale2000;
	where Origin ne 'RDU';
run;

*** Example 4;

proc print data=ia.sale2000;
	where Origin='ATH';
run;

**** Example 5;

proc print data=ia.sale2000;
	where FlightID='IA07400';
run;