```c
SELECT FROM_UNIXTIME(1591644470,'YYYY-MM-DD HH24:MI:SS');
select to_date('2023/1-12 20:20:20','yyyy/MM-dd HH24:mi:ss')
```c
SELECT FROM_UNIXTIME(1591644470,'YYYY-MM-DD HH24:MI:SS');
select to_date('2023/1-12 20:20:20','yyyy/MM-dd HH24:mi:ss')