How to convert days in difference in hours

Question

Hello,
I have a need to convert time difference in two days and translate into hours. How do I do that?
For e.g. query below
select  to_char(sysdate, 'MM/DD/YYYY HH:MI:SSAM') - to_char(sysdate-10, 'MM/DD/YYYY HH:MI:SSAM')) from dualthe difference between sysdate and sysdate-10 should result in hours not days.
Any idea?
Thanks,
D

Answer 1

Hi,
user13409519 wrote:
Hello,
I have a need to convert time difference in two days and translate into hours. How do I do that?You're asking for hours, not days, hours, minutes and seconds, right?
For e.g. query below
select  to_char(sysdate, 'MM/DD/YYYY HH:MI:SSAM') - to_char(sysdate-10, 'MM/DD/YYYY HH:MI:SSAM')) from dual
You can only subtract NUMBERs or DATEs. TO_CHAR returns a VARCHAR2
the difference between sysdate and sysdate-10 should result in hours not days.Get the difference in days, and then multiply by the number of hours per day, that is, 24:
SELECT     24 * (dt2 - dt1)     AS hours_dif
FROM     table_x
;shows the number of hours from d1 to d2. If d2 is earlier than d1, the number will be negative.
I hope this answers your question.
If not, post a little sample data (CREATE TABLE and INSERT statements, relevant columns only) for all tables involved, and also post the results you want from that data.
Explain, using specific examples, how you get those results from that data.
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