Solved

convert date to timestamp Oracle

Posted on 2014-12-12
8
5,777 Views
Last Modified: 2014-12-15
Hi experts, I need to convert a date column:
'11-DEC-14 01.17.00.801271 PM'

Open in new window

on:
'11/12/2104 01:17:00.801271'

Open in new window

I Known that I must use to_timestamp, but I can´t find the solution.

Could you help me with this issue?
Thanks, is urgent!
Regards
0
Comment
Question by:carlino70
  • 2
  • 2
  • 2
  • +2
8 Comments
 
LVL 51

Expert Comment

by:HainKurt
ID: 40496871
you convert string to date?
date to string?

what data you have now?
0
 
LVL 34

Expert Comment

by:johnsone
ID: 40496877
What is the datatype of the original?  It cannot be a date because I see fractional seconds.  I assume it is a timestamp and you are looking to make a different format?

The format elements are listed here -> http://docs.oracle.com/cd/E11882_01/server.112/e41084/sql_elements004.htm#i34948

What you are showing would be TO_CHAR(col1, 'dd/mm/yyyy hh:mi:ss.ff6')

However, you may actually want TO_CHAR(col1, 'dd/mm/yyyy hh24:mi:ss.ff6')  so that you can differentiate between AM and PM.
0
 
LVL 51

Expert Comment

by:HainKurt
ID: 40496894
select TO_TIMESTAMP('11-DEC-14 01.17.00.801271 PM', 'DD-MON-YY HH.MI.SS.FF PM') from dual

or

select TO_TIMESTAMP('11-DEC-14 01.17.00.801271 PM', 'DD-MON-YY HH.MI.SS.FF6 PM') from dual
0
PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

 

Author Comment

by:carlino70
ID: 40500585
Again:
SQL> SELECT TO_TIMESTAMP(TO_CHAR(sysdate,'dd-Mon-yy HH24:MI:SS'),'dd-mon-yyyy HH24:MI:SS') salida FROM dual;
SALIDA
---------------------------------------------------------------------------
15-DEC-14 03.54.00.000000000 PM

Open in new window

But with the adding:
SQL> SELECT substr(TO_TIMESTAMP(TO_CHAR(sysdate,'dd-Mon-yy HH24:MI:SS'),'dd-mon-yyyy HH24:MI:SS'),1,28) salida FROM dual;
SALIDA
----------------------------
15-DEC-14 03.53.32.000000000

Open in new window

That is the solution.
Thanks
0
 
LVL 76

Assisted Solution

by:slightwv (䄆 Netminder)
slightwv (䄆 Netminder) earned 250 total points
ID: 40500597
If the column is already a DATE data type, there is no need for all the to_char and to_timestamp stuff.  No need to take it to a string and then back:

select cast(sysdate as timestamp) from dual;
0
 
LVL 34

Accepted Solution

by:
johnsone earned 250 total points
ID: 40500600
Why are you taking a date, converting it to a string, converting it to a timestamp and then back to a string?

Why wouldn't you use:

select to_char(systimestamp, 'dd-MON-yy hh24.mi.ss.ff') from dual;

That should give you the exact same thing without all the conversions.
0
 
LVL 13

Expert Comment

by:Alexander Eßer [Alex140181]
ID: 40500603
I totally agree with slightwv: I don't see any purpose (that would make sense) in all that converting back and forth. Keep it as simple as possible ;-)
0
 

Author Closing Comment

by:carlino70
ID: 40501227
Thanks!
0

Featured Post

Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
data lookup in Oracle - need suggestions 55 121
Can't Access My Database 57 76
Oracle function to insert records? 15 47
Email query results in HTML 6 29
How to Create User-Defined Aggregates in Oracle Before we begin creating these things, what are user-defined aggregates?  They are a feature introduced in Oracle 9i that allows a developer to create his or her own functions like "SUM", "AVG", and…
Cursors in Oracle: A cursor is used to process individual rows returned by database system for a query. In oracle every SQL statement executed by the oracle server has a private area. This area contains information about the SQL statement and the…
This video shows setup options and the basic steps and syntax for duplicating (cloning) a database from one instance to another. Examples are given for duplicating to the same machine and to different machines
This video shows how to recover a database from a user managed backup

791 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question