In oracle database, I have a table with one column for "Update date" having data type as Timestamp (MM/DD/YYYY HH:MI:SS AM).
I want to convert this timestamp into a number, including the Hour, Minute and Seconds part.
Anyone please suggest what should be my query to get the same.
Any help would be appreciated.
Thanks
Rajat Arora
Solution query---
Select
TO_NUMBER(TO_CHAR(Timestamp, 'YYYYMMDDHH24MISS'))
From
dual;
Related
I have a column name 'Cos_Date' with value like 14APR2017:00:00:00.
However, for a new column name 'Arrival_Date', I would like to keep the date information but omit time, and keep the data type as Date but not Character. Ex, 14APR2017.
I have tried:
select TO_CHAR(Cos_Date, 'DD-MON-YYYY') ARRIVAL_DATE
But it will delete time information, but data type turns to Character.
I search on this site, and tried both:
select TO_DATE(TO_CHAR(Cos_Date, 'DD-MON-YYYY'), 'DD-MON-YYYY') ARRIVAL_DATE
and:
select TRUNC(Cos_Date) ARRIVAL_DATE
But it will not omit time information.
Can I try something else?
Thank you!
You can't "omit" the time portion of a DATE column in Oracle. The DATE data type always contains a time component. If you don't want to see the time, don't display it, e.g.,
SELECT TO_CHAR(TRUNC(Cos_Date),'DD-MON-YYYY') FROM dual;
In Oracle there is no date data type that has only a year-month-day component.
The DATE data type is stored internally as 7- or 8-bytes which always has year (2-bytes), month (1-byte), day (1-byte), hour (1-byte), minute (1-byte) and second (1-byte).
The TIMESTAMP data type also has fractional seconds (and can also have a time zone).
Can I try something else?
No, you either use a VARCHAR2 string or use a DATE or TIMESTAMP and accept that it has a time component.
Selecting date values without time:
SELECT date_col
FROM table
WHERE TO_CHAR (date_col, 'HH24:MI:SS') = '00:00:00';
Is there a way to change the value of the default timestamp in oracle, please find the below output of the query and it is one day behind. The google is returning results only to change the format of the default systimestmap, but i need to change the value itself. Please suggest.
select systimestamp from dual
SYSTIMESTAMP
12-02-17 07:29:26.843712000 PM +05:30
Do you want to provide your own value and turn in into a timestamp like this?
SELECT TO_TIMESTAMP ('10-Sep-02 14:10:10.123000', 'DD-Mon-RR HH24:MI:SS.FF')
FROM DUAL;
Oracle documentation
https://docs.oracle.com/cd/B19306_01/server.102/b14200/functions193.htm
Related question:
Oracle: how to add minutes to a timestamp?
What about this?
SELECT SYSTIMESTAMP + INTERVAL '2' SECOND FROM dual;
With this method you are able to add or remove 'second's, 'minute's, 'hour's and so on...
Hope this helps :-)
I need to load a table with a .csv file which contains date "20140825145416".
I have tried using (DT date "yyyymmdd hh24:mm:ss") in my control file.
It throws an error as ORA-01821: date format not recognized
I require the data in table as "MM/DD/YYYY HH:MM:SS".
Sample data : 20140825145416
thanks in advance.
Well, I would be remiss if I did not point out that the correct answer is to never store dates as VARCHAR2 data, but make it a proper DATE column and load it like this:
DT DATE "YYYYMMDDHH24MISS"
Formatting is done when selecting. It will make your life so much easier if you ever need to use that date in a calculation.
That out of the way, If you have no control over the database and have to store it as a VARCHAR2, first convert to a date, then use to_char to format it before inserting:
DT CHAR "to_char(to_date(:DT, 'YYYYMMDDHH24MISS'), 'MM/DD/YYYY HH24:MI:SS')"
Note 'MI' is used for minutes. You had a typo where you used 'MM' (months) again for minutes.
I know it's already been said in the previous answer, but it's so important, it's worth repeating. Do not store dates as varchars !!
If your DT column is timestamp then this might work
DT CHAR(25) date_format TIMESTAMP mask "yyyymmddhhmiss"
I used something like this in external tables. Maybe this might help
https://docs.oracle.com/cd/B19306_01/server.102/b14215/et_concepts.htm
and
https://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:8128892010789
Is there a way to update the date part of a column of type Date. For example, a row in the DB has value 2013-11-22 [stored in YYYY-MM-DD format]. And I want to update it to 2013-11-01.
If it had been one or few rows I could have done a simple update. But the real problem is that there are about hundred thousand rows with different date values. And I want to update all the dates to the 1st of each month. For example
Actual What I would like it to be
2013-01-22 2013-01-01
1989-10-03 1989-10-01
2004-07-01 2004-07-01
2005-12-31 2005-12-01
Would appreciate any help, how can i get this done through SQL. Thanks in Advance.
Assuming that the data type is a date, use trunc
TRUNC(date_column, 'mm')
Here is a sqlfiddle demo
Yes, you can use the trunc() function.
For example:
UPDATE thetable set datevalue = trunc(datevalue, 'MM');
I have an Oracle question, hope someone can guide me. I am using php and sql to select columns from a table. Part of the info I get is the time and date of when the column was created. For the moment I get the date in DD-MM-YYYY format. How can I change it so I can get it in YYYY-MM-DD format?
Thanks
try
SELECT TO_CHAR ( MyDateColumn, 'YYYY-MM-DD' ) FROM MyTable