update poi set last_index_time = to_date('2000-1-1 16:0:0', 'yyyy-mm-dd hh24:mi:ss');
select to_char(last_index_time, 'yyyy-mm-dd hh24:mi:ss') from poi where name like '%中地%';
select count(*) from poi where last_index_time > to_date('1989-09-07 00:00:00','yyyy-mm-dd hh24:mi:ss');