In MySQL :
CREATE TABLE t_users (username VARCHAR(30), password VARCHAR(30), date_added(DATE))
As I know for default format date in MySQL is like this : 2013-06-24
That worked.
Now I create table in ORACLE :
CREATE TABLE T_USERS (USERNAME VARCHAR(30), PASSWORD VARCHAR(30), DATE_ADDED(DATE))
My question is :
1. What is default date format in oracle ?
2. Can I use format like MySQL date format like this : 2013-06-24 ?
Please, need your advice.
Thank you
After connecting to oracle you can alter your session:
SQL> SELECT SYSDATE FROM DUAL;
SYSDATE
---------
24-JUN-13
SQL> ALTER SESSION SET NLS_DATE_FORMAT = 'YYYY-MM-DD';
Session altered.
SQL> SELECT SYSDATE FROM DUAL;
SYSDATE
----------
2013-06-24
You have to run it after new connection is established.
In order to display it in different way in Oracle SQL Developer:
Tools -> Preferences -> Database -> NLS -> Date Format
Related
DOB data type : DATE
13-JAN-76
10-FEB-80
17-MAR-79
---------------
Expected output
13-JAN-04
10-FEB-04
17-MAR-04
I tried use this but failed.
update table set dob=to_date(dob,'dd-MON-yyyy')||','||'2004','dd-MON-yyyy') where id='1001';
date format not recognized.
anyone help is much appreciated.
Here's one option:
(just to know date format; you don't have to do that)
SQL> alter session set nls_date_format = 'dd.mm.yyyy';
Session altered.
Here it goes:
SQL> select * from test;
DOB
----------
13.01.1976
10.02.1980
17.03.1979
SQL> update test set
2 dob = add_months(dob, (2004 - extract(year from dob)) * 12);
3 rows updated.
SQL> select * from test;
DOB
----------
13.01.2004
10.02.2004
17.03.2004
SQL>
You update statement relies on the session default date format. Typically this is defined by session parameter NLS_DATE_FORMAT
Better specify it explicitly:
update table set dob = to_date(2004 || TO_CHAR('dob', '-MM-DD'), 'YYYY-MM-DD')
I have a timestamp column in Oracle that has format 'MM/DD/YYYY HH24:MI.SxFF6'.
The data looks like below:
11/09/1917 10:45:28.230000
10/19/2014 18:09:28.410000
12/19/2011 11:06:28.340000
I need the timestamp to retain the value except for getting the milliseconds which need to be defaulted to 000000.
I tried query -
cast(to_char(Local_time, 'MM/DD/YYYY HH24:MI:SS') as timestamp(6))
But it is throwing error - "Not valid month"
Does anyone have any ideas on what I can try to get milliseconds to 0. I use Toad to query the table.
Your TIMESTAMP value does not have any format. All you have is a default display format - defined by current user NLS_TIMESTAMP_FORMAT setting.
Try this one:
CAST(Local_time AS TIMESTAMP(0))
If you like to trunc the milliseconds but haven them still available use
CAST(CAST(Local_time AS TIMESTAMP(0)) AS TIMESTAMP(6))
Something like this, perhaps?
SQL> create table test (col timestamp, result timestamp);
Table created.
SQL> insert into test (col) values (to_timestamp('11/09/1917 15:45:28.230000', 'MM/DD/YYYY HH24:MI:SS.FF6'));
1 row created.
SQL> update test set result = cast(col as date);
1 row updated.
SQL> select * From test;
COL RESULT
------------------------- -------------------------
09.11.17 15:45:28,230000 09.11.17 15:45:28,000000
SQL>
I have two DATE column in table oracle database(12c).sysdate format is:
SQL> select sysdate from dual;
SYSDATE
---------
25-NOV-17
SQ>desc test_table
id NUMBER(10)
LAST_CREATED_DATE DATE
IS_CREATED_DATE DATE
where LAST_CREATED_DATE has different format to IS_CREATED_DATE(sysdate).
because LAST_CREATED_DATE is fixed and i'm reading from file(date format:20100330) where as IS_CREATED_DATE am inserting as sysdate(current date).
insert into test_table (id,LAST_CREATED_DATE,IS_CREATED_DATE) values (123,20100930,sysdate);
but with this insert statement am facing errors.
I tried ALTER SESSION SET NLS_DATE_FORMAT = 'yyyymmdd';.This works fine in current session,but looking for by which i can change ORACLE database date format to yyyymmdd(linux).
You should change your statement like this:
insert into test_table (id,LAST_CREATED_DATE,IS_CREATED_DATE)
values (123,to_date('20100930','yyyymmdd'),sysdate);
There are three ways to accomplish this task :
1)
SQL>conn myschema/mypwd
SQL>insert into test_table values(123,to_date('20100930','yyyymmdd'),sysdate);
2) as you mentioned
SQL>alter session set nls_date_format = 'yyyymmdd';
SQL>insert into test_table values(123,'20100930',sysdate); -- notice that 20100930 is quoted
3) globally(along with the db, needs restart, maybe dangerous on a production system in coordination with existing applications' date format model)
SQL>conn / as sysdba
SQL>alter system set nls_date_format = 'yyyymmdd' scope=spfile;
SQL>shutdown immediate;
SQL>startup;
SQL>conn myschema/mypwd
SQL>insert into test_table values(123,'20100930',sysdate); -- from now on, you don't need to alter your date parameter for every session
I am trying to insert date value as dd-mon-yy but the database is storing it as dd/mm/yy.
For example: INSERT INTO tablename VALUES (to_date('01-mar-09', 'dd-mon-yy');
The DB stores it as 01/03/09. Why is that? Whay can't I just store it as 01-mar-09?
Please help.
Date is a raw datatype. It doesn't have a format to be saved. It's upto you or the environment/session to decide how to display it.. use NLS_DATE_FORMAT parameter as required... using alter session or use to_char() function
alter session set nls_date_format = 'DD-MON-YY';
select sysdate from dual;
28-OCT-15
alter session set nls_date_format = 'MM/DD/YY';
select sysdate from dual;
10/28/15
The NLS parameters precedence is decided as below, if not set on session level then use instance level, if not set at instance level then use which is present at database level. Below are the views which provide set values at each level
NLS_SESSION_PARAMETERS => session level parameters
NLS_INSTANCE_PARAMETERS => instance level parameters
NLS_DATABASE_PARAMETERS => database level parameters
Oracle doesn't store a date as any format .. it just stores "a date". you are viewing it/displaying it as a different format. Check your nls_date settings.
SQL> select sysdate from dual;
SYSDATE
---------
28-OCT-15
SQL> alter session set nls_date_format='dd-mon-yyyy hh24:mi:ss'
Session altered.
SQL> select sysdate from dual;
SYSDATE
--------------------
28-oct-2015 11:00:56
SQL>
iam confused. Iam trying to read an Value from an oracle table, format: timestamp(6).
In my PHP Scripts im setting the Dateformat with:
$db->query('ALTER SESSION SET NLS_DATE_FORMAT = "DD-MM-RR"');
On 2 Machines im recieving this string as value (wich is correct for me):
["TIME_INSERT"] => string(24) "05.10.07 14:20:05,000000"
On one linux machines where the same script is running, it returns:
["TIME_INSERT"] => string(28) "05-OCT-07 02.20.05.000000 PM"
any ideas how to change this ?
you should set the session parameter NLS_TIMESTAMP_FORMAT or NLS_TIMESTAMP_TZ_FORMAT to display timestamp data as you want:
SQL> select systimestamp from dual;
SYSTIMESTAMP
----------------------------------------------------
12/10/09 12:52:41,462532 +02:00
SQL> ALTER SESSION SET NLS_TIMESTAMP_TZ_FORMAT = 'dd.mm.rr hh24:mi:ss,ff5';
Session altered
SQL> select systimestamp from dual;
SYSTIMESTAMP
--------------------------------------------------------------------------------
12.10.09 12:56:36,14023