zoukankan      html  css  js  c++  java
  • Oracle常用SQL时间函数

    1、查询当前日期和时间

    select sysdate from dual;

    2、查询本月最后一天

    select last_day(sysdate) from dual;

    3、查询前后多少月

    select add_months(sysdate,24) from dual;

    4、查询下一周的星期几的具体日期(周日-周六:1-7)

    select next_day(sysdate,1) from dual;

    5、时间转时间

    select to_char(sysdate,'YYYY-MM-DD HH:MI:SS') from dual;

    6、字符转时间

    select to_date('20160101','YYYY-MM-DD') from dual;

    7、查询日期具体为星期几

    select to_char(to_date('2016-01-01','yyyy-mm-dd'),'day') from dual;

    8、查询天数之差

    select floor(sysdate - to_date('20000101','yyyymmdd')) from dual;

    9、查询时间的年、月、日、时等

    select to_char(sysdate,'YYYY') from dual;
    select to_char(sysdate,'MM') from dual;
    select to_char(sysdate,'DD') from dual;
    select to_char(sysdate,'HH24') from dual;
    select to_char(sysdate,'MI') from dual;
    select to_char(sysdate,'SS') from dual;
  • 相关阅读:
    Codeforces
    Codeforces
    SCUT
    模板
    SCUT
    SCUT
    模板
    SCUT
    UVA 437 "The Tower of Babylon" (DAG上的动态规划)
    UVA 1025 "A Spy in the Metro " (DAG上的动态规划?? or 背包问题??)
  • 原文地址:https://www.cnblogs.com/Yuvee/p/5495318.html
Copyright © 2011-2022 走看看