I have an entity class which has a timestamp property.
If I save an entity instance in oracle, the corresponding timestamp column will be written into Chinese format(I am using oracle 10g with Chinese locale).
22-8ζ -11 07.04.03.926000 δΈε is saved
But I want 2011-08-22 19:04:03.926
How can change column definition or database locale setting?
A timestamp in Oracle is a point in time. As such, there is no format stored with the data. When you retrieve data from a timestamp column, it is displayed by default in the format specified by your NLS_TIMESTAMP_FORMAT or NLS_TIMESTAMP_TZ_FORMAT session variable.
You can always use a specific format with to_char:
SQL> SELECT to_char(systimestamp, 'yyyy-mm-dd hh24:mi:ss.ff3') my_ts FROM dual;
MY_TS
-----------------------------
2011-08-22 14:38:48.351
You could also set a new default for your session with:
SQL> ALTER SESSION SET NLS_TIMESTAMP_TZ_FORMAT='yyyy-mm-dd hh24:mi:ss.ff3';
Session altered
SQL> select systimestamp from dual;
SYSTIMESTAMP
-------------------------------------------------
2011-08-22 14:42:23.776
Related
I am new to node red.
I am storing into the Oracle db in this date format dd-mm-yy hh:mi:ss.ff PM but I am getting a payload using a select query in this format yyyy-mm-ddThh:mi:ss.000Z but while retrieving data from Oracle db I want to print this format dd-mm-yyyy hh:mm:ss in my payload, how to write select query so that I can print the same date format,whatever stored in Oracle db
When you fetch a date value, it is stringified according to the NLS settings of your client. Looking at the same data with two different clients, you might see two different representations... of the same date.
If you want to choose the display format of a date, use Oracle function TO_CHAR in your query. It accepts a date and a format spec, and returns a string :
TO_CHAR(my_date_column, 'dd-mm-yyyy hh24:mi:ss')
It is also possible to change the default date format for the life time of your session, like :
ALTER SESSION SET NLS_DATE_FORMAT = 'dd-mm-yyyy hh24:mi:ss';
NB : if you are dealing with timestamps or timestamps with time zone, you need NLS_TIMESTAMP_FORMAT or NLS_TIMESTAMP_TZ_FORMAT.
Currently in my database
nls_date_format = 'DD-MON-YY'
But I want to save date in YYYY/DD/MM format .
Is it possible to save data in YYYY/DD/MM format because when I do
insert into tab1(name) values to_date(sysdate,'YYYY/DD/MM') ;
it shows below error:
Error report -
SQL Error: ORA-03001: unimplemented feature
03001. 00000 - "unimplemented feature"
*Cause: This feature is not implemented.
*Action: None.
Altering the session works ,for eg
alter session set nls_date_format = 'YYYY/DD/MM' ;
insert into tab1(name) values to_date(sysdate) ;
select * from tab1;
2017/31/05
Is there any way to save the data without altering session .so that data gets saved in table in 'YYYY/MM/DD' format instead of NLS_DATE_FORMAT ?
Thanks in Advance
you can not save date format in date column.
you can write your date like to_char(your_date,'YYYY/DD/MM') to column which data type is varchar.
when you read data you can use to_date function like to_date(your_value,'YYYY/DD/MM')
DATE and TIMESTAMP columns don't have any specific format. You can display your own format. you want to set default format means you can set NLS setting.
When importing columns of type "Timestamp" to an Oracle DB:
Import tbl:
02.09.13 00:00:00
After importing:
Oracle tbl:
02.09.13 08:23:44,000000000
In the Oracle tbl the type is also "Timestamp".
How can I remove the ",000000000"?
The TIMESTAMP datatype includes fractional seconds; there is no way to remove them within the database whilst maintaining the datatype. If you don't want fractional seconds then put the date into a DATE column.
It shouldn't matter whether the fractional seconds are stored or not. When selecting from the database into anything other than another date datatype you should format the date as required by the client displaying it. The normal method of doing this would be by using the function TO_CHAR(); for instance:
select to_char(column_name, 'dd.mm.yy hh24:mi:ss') from table_name
You can also do this at a session level by changing your NLS settings.
Unrelated to your question, but to address the comment on a comma being part of your timestamp; the default date format is determined by NLS_TERRITORY. A comma is a perfectly valid character to have here. Altering the NLS_TERRITORY, for example to France, it will appear as part of the NLS_DATE_FORMAT:
SQL> alter session set nls_territory = 'FRANCE';
Session altered.
SQL> select systimestamp from dual
2 ;
SYSTIMESTAMP
------------------------------------------------------------
18/09/13 13:09:54,418387 +01:00
Have some dates in my local Oracle 11g database that are in this format:
01-JUL-85
How do I change it to this format (mm/dd/yyyy) using PL/SQL:
7/01/1985
With thanks...
If the column is a date datatype then it is only your NLS_DATE settings that are causing them to be displayed in the format DD-MON-YYYY.
To check your current NLS_DATE format run the following:
SELECT value
FROM V$NLS_Parameters
WHERE parameter ='NLS_DATE_FORMAT';
Oracle stores all dates in an internal binary format and uses the NLS_DATE format to display them (unless explicitly told to display them differently).
You can either alter your NLS_DATE settings to MM/DD/YYYY or TO_CHAR the date column using:
TO_CHAR(<date_column>, 'MM/DD/YYYY')
to see the format you require.
You can alter the NLS_DATE format for your current session or alter the database parameters to change the default NLS_DATE format for the database itself.
If the column is a VARCHAR2 type then you'll need to convert to a date first and then you can format the output using either of the methods described above.
See: http://ss64.com/ora/syntax-nls.html
and: http://www.dba-oracle.com/t_nls_date_format_sysdate.htm
e.g.
SELECT TO_CHAR(sysdate, 'MM/DD/YYYY') as current_date
FROM dual;
or
ALTER SESSION SET NLS_DATE_FORMAT = 'MM/DD/YYYY';
SELECT sysdate
FROM dual;
In pure PL/SQL
DECLARE
v_date DATE := sysdate;
BEGIN
DBMS_OUTPUT.put_line(TO_CHAR(v_date, 'MM/DD/YYYY'));
END;
I need to select some values from an Informix database via Oracle ODBC. One of the columns is a timestamp, and when I just select it all I see in SQL*Plus is the date value. How do I get the time as well?
By default SQL*Plus will display the date in the format specified by the NLS_DATE_FORMAT system parameter (client side). You can alter this behaviour by setting the NLS_DATE_FORMAT appropriately. You can also explicitly display the time data:
SQL> select sysdate from dual;
SYSDATE
-----------
05/10/2009
SQL> select to_char(sysdate, 'hh24:mi') from dual;
TO_CHAR(SYSDATE,'HH24:MI')
--------------------------
13:55