I have a column in my table which is of type Timestamp.
while converting this field to the format: 2003-08-09T05:48:37+05:30, I am using the following query:
select
TO_CHAR(CONSUMER_DLY_TIME, 'YYYY-MM-DD"T"HH24:MI:SSTZH:TZM')
from oms_cust_ord_head;
it gives me the error: "date format not recognized"
How to resolve this ?
A TIMESTAMP value does not contain any time zone information, thus you cannot display it.
Which time zone do you want do be shown?
For time zone of database operating system you can use:
SELECT
TO_CHAR(CONSUMER_DLY_TIME, 'YYYY-MM-DD"T"HH24:MI:SS')||TO_CHAR(SYSTIMESTAMP, 'TZH:TZM')
or for you current session time zone:
SELECT
TO_CHAR(CONSUMER_DLY_TIME, 'YYYY-MM-DD"T"HH24:MI:SS')||TO_CHAR(CURRENT_TIMESTAMP, 'TZH:TZM')
SELECT
TO_CHAR(CAST(CONSUMER_DLY_TIME AS TIMESTAMP WITH TIME ZONE), 'YYYY-MM-DD"T"HH24:MI:SSTZH:TZM')
SELECT
TO_CHAR(CONSUMER_DLY_TIME, 'YYYY-MM-DD"T"HH24:MI:SS')||TZ_OFFSET(SESSIONTIMEZONE)
You should use
select trunc(<timestamp_column>) from your_table
Read Format Models in detail.
Note: Format in which the date will be displayed depends on your session parameter nls_date_format.
Related
I have a Oracle SQL statement where I have to get the current timestamp as one of the columns. But I dont require the Timezone which CURRENT_TIMESTAMP gives or the AM/PM given by LOCALTIMESTAMP.
I require the current timestamp in 24hr format without the timezone.
Is it possible to get that in Oracle SQL?
It seems you're mixing 2 concepts here: "datatype" and "date format mask".
data type: LOCALTIMESTAMP returns datatype TIMESTAMP and CURRENT_TIMESTAMP returns datatype TIMESTAMP WITH TIME ZONE. TIMESTAMP is similar to DATE but has a higher precision. As usual... checking the docs is worth it.
date format mask: determines how you display the date information. Americans can't read 24 hour format, the rest of the world is confused by AM/PM. Fortunately, you can decide how you want to display the date as explained in the oracle docs.
If you just want to return the current date in 24 hour format you could do something like:
SELECT
TO_CHAR(SYSDATE,'DD-MON-YYYY HH24:MI:SS') as mydate,
<other columns>
FROM
<table_name>
If you need the date to be more precise and you require fractional seconds then you can use SYSTIMESTAMP instead of DATE with a format mask 'DD-MON-YYYY HH24:MI:SS.FF9'
I have timestamps like the following '2018-04-18T18:11:16+01:00' in varchar type and want to transform them to a timestamp type. I am having trouble using the to_timestamp(). Is there a specific way to use the to_timestamp() function that will allow me to do the transformation i want? If not, is there any other way to achieve my goal?
Doing
to_timestamp('2018-04-18T18:11:16+01:00', 'DD-MM-YYYY HH24:MI:SS')
gives an error of
Error: date/time field value out of range:
"2018-04-18T18:11:16+01:00"
I would expect varchars like '2018-04-18T18:11:16+01:00' to be transformed to 2018-04-18 17:11:16 (where type is timestamp)
demo:db<>fiddle
If you simply want to get the string into a timestamp holding the time zone:
Simply cast it into timestamp with time zone (= timestamptz) type:
SELECT '2018-04-18T18:11:16+01:00'::timestamptz
If you just want to cut the time zone part and holding the time without any further calculations: Simply cast it into type timestamp without time zone (= timestamp)
SELECT '2018-04-18T18:11:16+01:00'::timestamp
If you want to convert it into a timestamp at UTC (calculating -1) you can do:
SELECT ('2018-04-18T18:11:16+01:00' AT TIME ZONE 'UTC')::timestamp
I have a table with a string format column where value are like this :
YYYY-MM-DD HH:MM:SS TIMEZONE so for example 2015-08-27 19:42:53 UTC
UTC is the only timezone. I want to rewrite this string column as a date column. I have an Invalid date error when I'm trying to run the following query to export the result in a new table
SELECT
CAST(my_date AS DATE),stuff_here,stuff_here
FROM
`table`
What should I do in order to properly change the type of this column from string to date ?
You appear to be trying to write this logic:
select CAST(substr('2015-08-27 19:42:53 UTC', 1, 10) AS DATE)
Because I am in New York, I would instead write:
select date(timestamp('2015-08-27 19:42:53 UTC'), 'America/New_York')
This distinction has been very important in our using data -- the difference between days at the Greenwich Meridian versus in our local area.
Try:
SELECT CAST(SUBSTR(my_date,1,19) AS DATE,stuff_here,stuff_here
FROM `table`
This assumes that you are not interested in the timezone part.
I have following 2015-06-17T00:00:00.000+05:00 string.
I want to convert this string to Date using oracle sql.
I tried lot of format mask but none works for me :
SELECT TO_DATE('2015-06-17T00:00:00.000+05:00','yyyy-mm-dd HH24:MI:SS TZR') FROM DUAL;
Any idea which format mask should i apply for above conversion.
Also please note that i only need date information i.e (mm-dd-yyyy). So its also ok if the conversion results in date information only (i.e skipping time information)
This should work:
SELECT TO_DATE(SUBSTR('2015-06-17T00:00:00.000+05:00',1,10),'yyyy-mm-dd') from dual
If you need to keep track of the time zone you should probably look at something like this:
SELECT CAST(TO_TIMESTAMP_TZ('2015-06-17T00:00:00.000+05:00','yyyy-mm-dd"T"HH24:MI:SS.FFTZH:TZM') AT TIME ZONE 'UTC' AS DATE) FROM DUAL;
In Postgres, is it possible to change the default format mask for a timestamp?
right now comes back as
2012-01-03 20:27:53.611489
I would like resolution to minute like this:
2012-01-03 20:27
I know I can do this on individual columns with to_char() as or stripped down with a substr() by the receiving app, but having it formatted correctly initially would save a lot of work and reduce a lot of errors.
In PostgreSQL, The formatting of timestamps is independent of storage. One answer is to use to_char and format the timestamp to whatever format you need at the moment you need it, like this:
select to_char(current_timestamp, 'yyyy-MM-dd HH24:MI:SS.MS');
select to_timestamp('2012-10-11 12:13:14.123',
'yyyy-MM-dd HH24:MI:SS.MS')::timestamp;
But if you must set the default formatting:
Change the postgresql timestamp format globally:
Take a look at your timezone, run this as an sql query:
show timezone
Result: "US/Eastern"
So when you are printing out current_timestamp, you see this:
select current_timestamp
Result: 2012-10-23 20:58:35.422282-04
The -04 at the end is your time zone relative to UTC. You can change your timezone with:
set timezone = 'US/Pacific'
Then:
select current_timestamp
Result: 2012-10-23 18:00:38.773296-07
So notice the -07 there, that means we Pacific is 7 hours away from UTC. How do I make that unsightly timezone go away? One way is just to make a table, it defaults to a timestamp without timezone:
CREATE TABLE worse_than_fail_table
(
mykey INT unique not null,
fail_date TIMESTAMP not null
);
Then if you add a timestamp to that table and select from it
select fail_date from worse_than_fail_table
Result: 2012-10-23 21:09:39.335146
yay, no timezone on the end. But you want more control over how the timestamp shows up by default! You could do something like this:
CREATE TABLE moo (
key int PRIMARY KEY,
boo text NOT NULL DEFAULT TO_CHAR(CURRENT_TIMESTAMP,'YYYYMM')
);
It's a text field which gives you more control over how it shows up by default when you do a select somecolumns from sometable. Notice you can cast a string to timestamp:
select '2012-10-11 12:13:14.56789'::timestamp
Result: 2012-10-11 12:13:14.56789
You could cast a current_timestamp to timestamp which removes the timezone:
select current_timestamp::timestamp
Result: 2012-10-23 21:18:05.107047
You can get rid of the timezone like this:
select current_timestamp at time zone 'UTC'
Result: "2012-10-24 01:40:10.543251"
But if you really want the timezone back you can do this:
select current_timestamp::timestamp with time zone
Result: 2012-10-23 21:20:21.256478-04
You can yank out what you want with extract:
SELECT EXTRACT(HOUR FROM TIMESTAMP '2001-02-16 20:38:40');
Result: 20
And this monstrosity:
SELECT TIMESTAMP WITH TIME ZONE '2001-02-16 20:38:40-05' AT TIME ZONE 'EST';
Result: 2001-02-16 20:38:40
In postgres, you can change the default format mask for datetimes - using the set datestyle option; the available options can be found here (see 8.5.2. Date/Time Output).
Unfortunately, all the available options include the number of seconds - you will therefore need to reformat them either in the query or the application code (if applicable).
to_char() is used to create a string literal. If you want a different timestamp value, use date_trunc():
date_trunc('minute', now())
For converting literal input, use to_timestamp():
to_timestamp('2012-01-03 20:27:53.611489', 'YYYY-MM-DD HH24:MI')
This returns timestamptz. Cast to timestamp [without time zone] by appending ::timestamp (which assumes your current timezone setting), or with the AT TIME ZONE construct to define a time zone explicitly.
To my knowledge, there is no setting in PostgreSQL that would trim seconds from timestamp literals by default.