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 :-)
Related
select TRUNC(TO_DATE('22-AUG-03'), 'YEAR')
from dual;
ORA-01843: not a valid month
1st example -> https://www.techonthenet.com/oracle/functions/trunc_date.php
I know "trunc" function takes in a date and optional fmt parameter.
Why am I getting this error?
I don't think the problem is trunc(). I think the problem is the date format. You are safer using the date keyword and an ISO-standard formatted date:
select TRUNC(DATE '2003-08-22', 'YEAR')
from dual;
The interpretation of a date string depends on the internationalization settings for your particular environment. The above does not have that dependency.
Here is a very simple check: IN THE SAME SESSION where your SELECT fails, and WITHOUT you altering the NLS_DATE_FORMAT, see what happens if you run the simpler statement,
SELECT TO_DATE('22-AUG-03') FROM DUAL
You will get the same error - which proves conclusively that it has nothing to do with TRUNC().
To make everything work exactly as in the tutorial, issue the command
ALTER SESSION SET NLS_DATE_FORMAT = 'dd-MON-yy'
first, before everything else. Note though that formats that have the year as two digits instead of four are a very bad idea in most cases.
It seems that you want to get the year of the date you receive in parameter
If you get '22-AUG-03' as parameter, add to TO_DATE function the date format you expect and then trunc it:
SELECT TRUNC(TO_DATE('22-AUG-03', 'dd-MON-yy'),'YEAR') FROM DUAL
Use SELECT EXTRACT(YEAR FROM TO_DATE('22-AUG-03', 'dd-MON-yy')) FROM DUAL;
to extract year from date.
i have table (sample below),
ARTICLE DATE
104425 05.09.2014
105996 24.07.2014
105999 13.07.2014 3:00:00
106005 14.08.2014
106008 05.07.2014
how can i select rows with time in it?
UPD: Colomn DATE have (DD.MM.YYYY) and (DD.MM.YYYY H24:MI:SS) simultaneously
please, try
select * from your_table where trunc(date) != date
Not sure I understand clearly what you want. Does your table have a Time column ? In that case you should do something like :
SELECT * FROM your_table WHERE Time IS NOT NULL;
The Oracle date datatype always has a time component. The way the date is being displayed on your system causes the time to be omitted if it's midnight. In order to get this to do what you want, you need to exclude those times that are at midnight. trunc can be used to set a date to midnight, which is why select * from your_table where trunc(date) <> date works. However, you should be aware that this could cause unexpected side effects if you ever intentionally set the time to midnight.
I want to get the months between current date to earlier date.
SELECT MONTHS_BETWEEN(to_date(fld_valid_from,'yyyy-mm-dd hh24:mi:ss'),TO_DATE(sysdate, 'yyyy-mm-dd hh24:mi:ss')) num_months
FROM tbl_customer
But it's not working. I don't know if that's correct or not.
sysdate is already a date, and does not need to be converted to one using to_date(). I suspect that fld_valid_from is also a date.
What error message are you getting? Did you try comparing the two variables without the TO_DATE command?
SELECT MONTHS_BETWEEN (trunc(fld_valid_from),trunc(sysdate))
FROM tbl_customer
This would work if your column fld_valid_from is a date type. You're comparing a date with another date. You use TO_DATE to convert a string data type to a date data type.
With the TRUNC function, you remove the timestamp from the date, and get only...well, the date:
SELECT SYSDATE, TRUNC(SYSDATE) FROM DUAL;
SYSDATE TRUNC(SYSDATE)
---------------------------------------
16/07/2013 10:45:53 16/07/2013
Hope it helps.
Regards.
I'm reading a pipe delimited file with SQL Loader and want to populate a LAST_UPDATED field in the table I am populating. My Control File looks like this:
LOAD DATA
INFILE SampleFile.dat
REPLACE
INTO TABLE contact
FIELDS TERMINATED BY '|'
OPTIONALLY ENCLOSED BY '"'
(
ID,
FIRST_NAME,
LAST_NAME,
EMAIL,
DEPARTMENT_ID,
LAST_UPDATED SYSTIMESTAMP
)
For the LAST_UPDATED field I've tried SYSTIMESTAMP and CURRENT_TIMESTAMP and neither work. SYSDATE however works fine but doesn't give me the time of day.
I am brand new to SQL Loader so I really know very little about what it is or isn't capable of. Thanks.
Have you tried the following:
CURRENT_TIMESTAMP [ (precision) ]
select current_timestamp(3) from dual;
CURRENT_TIMESTAMP(3)
-----------------------------
10-JUL-04 19.11.12.686 +01:00
To do this in SQLLDR, you will need to use EXPRESSION in the CTL file so that SQLLDR knows to treat the call as SQL.
Replace:
LAST_UPDATED SYSTIMESTAMP
with:
LAST_UPDATED EXPRESSION "current_timestamp(3)"
I accepted RC's answer because ultimately he answered what I was asking but my unfamiliarity with some of Oracle's tools led me to make this more difficult than it needed to be.
I was trying to get SQL*Loader to record a timestamp instead of just a date. When I used SYSDATE, and then did a select on the table it was only listing the the date (05-AUG-09).
Then, I tried RC's method (in the comments) and it worked. However, still, when I did a select on the table I got the same date format. Then it occurred to me it could just be truncating the remainder for display purposes. So then I did a:
select TO_CHAR(LAST_UPDATED,'MMDDYYYY:HH24:MI:SS') from contact;
And it then displayed everything. Then I went back to the control file and changed it back to SYSDATE and ran the same query and sure enough, the HH:MI:SS was there and accurate.
This is all being done in SqlDeveloper. I don't know why it defaults to this behavior. Also what threw me off are the following two statements in sqldeveloper.
SELECT CURRENT_TIMESTAMP FROM DUAL; //returns a full date and time
SELECT SYSDATE FROM DUAL; // returns only a date
If you want to use the table defined default you can use:
ROWDATE EXPRESSION "DEFAULT"
In Sql Developer run:
ALTER SESSION SET NLS_DATE_FORMAT='YYYY-MM-DD HH24:MI:SS'
and then check it with
SELECT SYSDATE FROM DUAL
Probably a classic... Would you know a easy trick to retrieve an UTC value of SYSDATE on Oracle (best would be getting something working on the 8th version as well).
For now I've custom function :(
Cheers,
Stefan
You can use
SELECT SYS_EXTRACT_UTC(TIMESTAMP '2000-03-28 11:30:00.00 -02:00') FROM DUAL;
You may also need to change your timezone
ALTER SESSION SET TIME_ZONE = 'Europe/Berlin';
Or read it
SELECT SESSIONTIMEZONE, CURRENT_TIMESTAMP FROM dual;
select sys_extract_utc(systimestamp) from dual;
Won't work on Oracle 8, though.
Usually, I work with DATE columns, not the larger but more precise TIMESTAMP used by some answers.
The following will return the current UTC date as just that -- a DATE.
CAST(sys_extract_utc(SYSTIMESTAMP) AS DATE)
I often store dates like this, usually with the field name ending in _UTC to make it clear for the developer. This allows me to avoid the complexity of time zones until last-minute conversion by the user's client. Oracle can store time zone detail with some data types, but those types require more table space than DATE, and knowledge of the original time zone is not always required.
I'm using:
SELECT CAST(SYSTIMESTAMP AT TIME ZONE 'UTC' AS DATE) FROM DUAL;
It's working fine for me.
If you want a timestamp instead of just a date with sysdate, you can specify a timezone using systimestamp:
select systimestamp at time zone 'UTC' from dual
outputs: 29-AUG-17 06.51.14.781998000 PM UTC