How can I get the difference in hours between two dates?

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情歌与酒
情歌与酒 2020-12-10 18:43

I have to do a \"select\" that returns the difference between a field of type date from the database and the current date in hours. How can I do this in oracle?

I tr

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  • 2020-12-10 19:29

    Diference between two dates in hours and minutes

    SELECT     TRUNC(minutes_ / 60) || ' Hours, ' || TRUNC(MOD(minutes_,  60)) || ' Minutes'  diference
    FROM     ( SELECT  (sysdate - to_date('16/10/2019 18:45:00', 'DD/MM/YYYY HH24:MI:SS')) * 24 * 60     AS minutes_
      FROM     dual
    );
    

    Diference between two dates in hours

    SELECT     ROUND(minutes_ / 60, 2) || ' Hours ' 
    FROM     ( SELECT  (sysdate - to_date('16/10/2019 18:45:00', 'DD/MM/YYYY HH24:MI:SS')) * 24 * 60     AS minutes_
      FROM     dual
    );
    

    Diference between two dates in hours (truncate)

    SELECT     ROUND(minutes_ / 60, 2) || ' Hours ' 
    FROM     ( SELECT  (sysdate - to_date('16/10/2019 18:45:00', 'DD/MM/YYYY HH24:MI:SS')) * 24 * 60     AS minutes_
      FROM     dual
    );
    
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  • 2020-12-10 19:35

    I did this way:

    select to_number(to_char(sysdate,'HH24')) - to_number(to_char(*YOUR_DATA_VALUE*,'HH24')),max(exp_time)  from ...
    

    Also, you can check this for minutes : Oracle : how to subtract two dates and get minutes of the result

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  • 2020-12-10 19:41

    The error is because SYSDATE is already a date, there's no need to use TO_DATE() to convert it to a date.

    If you don't convert it to a date:

    select
        24 * (sysdate - to_date('2012-02-28 15:20', 'YYYY-MM-DD hh24:mi')) as diff_hours
    from dual;
    

    And if the formatting of the dates are wrong, you can possible use two steps like:

    select
        24 * (to_date(to_char(sysdate, 'YYYY-MM-DD hh24:mi'), 'YYYY-MM-DD hh24:mi') - to_date('2012-02-28 15:20', 'YYYY-MM-DD hh24:mi')) as diff_hours
    from dual;
    
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  • 2020-12-10 19:41
    select trunc((sysdate - to_date('2012-02-28 15:20', 'YYYY-MM-DD hh24:mi')) / 24)
      from dual;
    
    0 讨论(0)
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