select T.* from table T where 1=1
AND ( to_number(to_char(t.END_DATE,'yyyy'))>=2021) or (t.START_DATE like '2021%')
12-05
select T.* from table T where 1=1
AND ( to_number(to_char(t.END_DATE,'yyyy'))>=2021) or (t.START_DATE like '2021%')