declarev_count number;beginv_count := 0;
for cur_data in (select t.id form table_name t where t.column is null) loop
update table_name t set t.column = 0 where t.id = cur_data.id;
v_count := v_count + 1;
if v_count > 0 and mod(v_count, 10000) = 0 then
commit;
v_coun...
