, PL SQL .
PL SQL TO_DATE (, ), .
SELECT * FROM order_details
WHERE order_date
BETWEEN
TO_DATE ('2014/02/01', 'yyyy/mm/dd')
AND
TO_DATE ('2014/02/28', 'yyyy/mm/dd');
SELECT * FROM order_details
WHERE order_date >= TO_DATE('2014/02/01', 'yyyy/mm/dd')
AND order_date <= TO_DATE('2014/02/28','yyyy/mm/dd');