select substr('JSL180415051260',4,4) from dual select substr('JSL180415051260',8,6) from dual select sysdate from dual 相关文章: 2022-02-09 2022-02-09 2022-02-09 2022-02-09 2022-02-09 2022-12-23 2022-12-23 2021-08-12