How do i perform a calculation based on a specific time of the day in Oracle?

I would like to calculate the minutes in Oracle if the time passes 1530. I am having trouble with the best way to hard code time time and cacalulate

Thanks so much!

 CASE WHEN
       TO_CHAR(ptoutor.tracking_time_in  ,'hh24mi') > '1530'
    THEN
      (15:30?? - ptinor.tracking_time_in ) * 1440
    else
     (ptoutor.tracking_time_in - ptinor.tracking_time_in  ) * 1440  
    END
MIREESEAsked:
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flow01Commented:
with tr
    as
    (select to_date('31/03/2012 14:00:03','dd/mm/yyyy hh24:mi:ss') ptoutor_tracking_time_in, to_date('31/03/2012 14:22:05','dd/mm/yyyy hh24:mi:ss') ptinor_tracking_time_in from dual
     union
     select to_date('31/03/2012 15:00:03','dd/mm/yyyy hh24:mi:ss') ptoutor_tracking_time_in, to_date('31/03/2012 14:22:05','dd/mm/yyyy hh24:mi:ss') ptinor_tracking_time_in from dual
     union
     select to_date('31/03/2012 15:28:00','dd/mm/yyyy hh24:mi:ss') ptoutor_tracking_time_in, to_date('31/03/2012 14:20:00','dd/mm/yyyy hh24:mi:ss') ptinor_tracking_time_in from dual
     union
     select to_date('31/03/2012 15:32:00','dd/mm/yyyy hh24:mi:ss') ptoutor_tracking_time_in, to_date('31/03/2012 14:20:00','dd/mm/yyyy hh24:mi:ss') ptinor_tracking_time_in from dual
     union
     select to_date('31/03/2012 16:00:03','dd/mm/yyyy hh24:mi:ss') ptoutor_tracking_time_in, to_date('31/03/2012 15:22:05','dd/mm/yyyy hh24:mi:ss') ptinor_tracking_time_in from dual
     union
     select to_date('31/03/2012 17:00:03','dd/mm/yyyy hh24:mi:ss') ptoutor_tracking_time_in, to_date('31/03/2012 15:22:05','dd/mm/yyyy hh24:mi:ss') ptinor_tracking_time_in from dual
    )
    select to_char(ptoutor_tracking_time_in, 'dd/mm/yyyy hh24:mi:ss'), to_char(ptinor_tracking_time_in, 'dd/mm/yyyy hh24:mi:ss'),  timedif * 1440 minutes
    from
    (
    select  ptoutor_tracking_time_in, ptinor_tracking_time_in,
    case
    when ptoutor_tracking_time_in - trunc(ptoutor_tracking_time_in)  > (15.5)/24
    then (trunc(ptoutor_tracking_time_in) + (15.5)/24 ) - ptinor_tracking_time_in
    else
     ptoutor_tracking_time_in   - ptinor_tracking_time_in
    end
    timedif
    from tr
    )
    order by ptoutor_tracking_time_in
/
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MIREESEAuthor Commented:
That worked perfectly.

Thanks!
0
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