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oracle date question

Posted on 2014-10-21
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Last Modified: 2014-10-29
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http://www.experts-exchange.com/Database/Oracle/Q_28540770.html#a40392275

drop table tab1 purge;
create table tab1(start_time date, end_time date);

Insert into TAB1
   (start_TIME, end_TIME)
 Values
   (
   TO_DATE('09/01/2010 15:30:00', 'MM/DD/YYYY HH24:MI:SS'),
   TO_DATE('02/01/2008 19:30:00', 'MM/DD/YYYY HH24:MI:SS'));

commit;

select 
  extract(day from numtodsinterval(to_date(to_char(end_time,'HH24:MI:SS'),'HH24:MI:SS')-to_date(to_char(start_time,'HH24:MI:SS'),'HH24:MI:SS'),'day')) days,
  extract(hour from numtodsinterval(to_date(to_char(end_time,'HH24:MI:SS'),'HH24:MI:SS')-to_date(to_char(start_time,'HH24:MI:SS'),'HH24:MI:SS'),'day')) hours,
  extract(minute from numtodsinterval(to_date(to_char(end_time,'HH24:MI:SS'),'HH24:MI:SS')-to_date(to_char(start_time,'HH24:MI:SS'),'HH24:MI:SS'),'day')) minutes,
  extract(second from numtodsinterval(to_date(to_char(end_time,'HH24:MI:SS'),'HH24:MI:SS')-to_date(to_char(start_time,'HH24:MI:SS'),'HH24:MI:SS'),'day')) seconds
from tab1

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I need to add hours and minutes. eg 6 hrs and 30 mins I need to get 630
and if minutes is 0 then it has to be just hours like 6. Help appreciated.
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Question by:anumoses
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6 Comments
 
LVL 77

Accepted Solution

by:
slightwv (䄆 Netminder) earned 2000 total points
ID: 40394597
Maybe just concatenate them and add a case?

...
extract(hour from numtodsinterval(to_date(to_char(end_time,'HH24:MI:SS'),'HH24:MI:SS')-to_date(to_char(start_time,'HH24:MI:SS'),'HH24:MI:SS'),'day')) ||
case when  extract(minute from numtodsinterval(to_date(to_char(end_time,'HH24:MI:SS'),'HH24:MI:SS')-to_date(to_char(start_time,'HH24:MI:SS'),'HH24:MI:SS'),'day')) > 0 then extract(minute from numtodsinterval(to_date(to_char(end_time,'HH24:MI:SS'),'HH24:MI:SS')-to_date(to_char(start_time,'HH24:MI:SS'),'HH24:MI:SS'),'day')) end
0
 
LVL 6

Author Comment

by:anumoses
ID: 40394630
I had tried doing the below that did not work.

case when
extract(minute from numtodsinterval(to_date(to_char(end_time,'HH24:MI:SS'),'HH24:MI:SS')
        -to_date(to_char(start_time,'HH24:MI:SS'),'HH24:MI:SS'),'day')) = 0 then
extract(hour from numtodsinterval(to_date(to_char(end_time,'HH24:MI:SS'),'HH24:MI:SS')
          -to_date(to_char(start_time,'HH24:MI:SS'),'HH24:MI:SS'),'day'))
when extract(minute from numtodsinterval(to_date(to_char(end_time,'HH24:MI:SS'),'HH24:MI:SS')
        -to_date(to_char(start_time,'HH24:MI:SS'),'HH24:MI:SS'),'day')) > 0 then      
extract(hour from numtodsinterval(to_date(to_char(end_time,'HH24:MI:SS'),'HH24:MI:SS')
          -to_date(to_char(start_time,'HH24:MI:SS'),'HH24:MI:SS'),'day'))
extract(minute from numtodsinterval(to_date(to_char(end_time,'HH24:MI:SS'),'HH24:MI:SS')
        -to_date(to_char(start_time,'HH24:MI:SS'),'HH24:MI:SS'),'day')) end diff      

Thanks though
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LVL 77

Assisted Solution

by:slightwv (䄆 Netminder)
slightwv (䄆 Netminder) earned 2000 total points
ID: 40394657
It is still basic formatting and concatenation.

Play around with it a little and see what isn't working with it then adjust.

select 
  trim(extract(hour from numtodsinterval(to_date(to_char(end_time,'HH24:MI:SS'),'HH24:MI:SS')-to_date(to_char(start_time,'HH24:MI:SS'),'HH24:MI:SS'),'day'))) || 
  case when trim(to_char(extract(minute from numtodsinterval(to_date(to_char(end_time,'HH24:MI:SS'),'HH24:MI:SS')-to_date(to_char(start_time,'HH24:MI:SS'),'HH24:MI:SS'),'day')),'00'))  > 0 then 
  trim(to_char(extract(minute from numtodsinterval(to_date(to_char(end_time,'HH24:MI:SS'),'HH24:MI:SS')-to_date(to_char(start_time,'HH24:MI:SS'),'HH24:MI:SS'),'day')),'00'))
  end  mytime
from tab1
/

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LVL 6

Author Comment

by:anumoses
ID: 40395394
In this script the 3rd line is giving wrong data. -30 for minutes.
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LVL 77

Expert Comment

by:slightwv (䄆 Netminder)
ID: 40395412
I deleted my last post hoping you hadn't seen it yet.  It was flawed.
0
 
LVL 6

Author Closing Comment

by:anumoses
ID: 40410611
thanks for the help
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