How to retrieve two different country date / time in single query? Whether I need to change any NLS parameters setting?
Sample query:
Select sysdate ind, sysdate us from dual;
O/p:
11/09/2015 3:05 PM 11/09/2015 05:35 AM
Try;
select systimestamp ind, systimestamp at time zone 'US/Eastern' us
from dual;
If you interested in date then;
select
cast(systimestamp as date) ind,
cast(systimestamp at time zone 'US/Eastern' as date) us
from dual;
Reference for all Time Zones
You can use FROM_TZ and TZ_OFFSET to get the same result:
select sysdate ind, FROM_TZ(TIMESTAMP '2015-09-11 15:50:42', TZ_OFFSET('US/Eastern')) us
from dual;
If you want to know more about the time zones then:
SELECT DISTINCT tzname
FROM V$TIMEZONE_NAMES;
Please refer these links for FROM_TZ and TZ_OFFSET
I think you can do it with the third noptions parameter of the to_char function.
It also seems that you can use the AT Timezone clause in your query
Here is an example given the link I gave (I am sorry I cannot test it for the moment):
SELECT FROM_TZ(CAST(TO_DATE('1999-12-01 11:00:00',
'YYYY-MM-DD HH:MI:SS') AS TIMESTAMP), 'America/New_York')
AT TIME ZONE 'America/Los_Angeles' "West Coast Time"
FROM DUAL;
You can use SYS_EXTRACT_UTC(SYSTIMESTAMP) to get the current Coordinated Universal Time and then:
India is 5½ Hours ahead of UTC;
US EST is 4 hours behind UTC; and
US PST is 7 hours behind UTC.
SQL Fiddle
Oracle 11g R2 Schema Setup:
Query 1:
SELECT TO_CHAR( SYS_EXTRACT_UTC(SYSTIMESTAMP), 'YYYY-MM-DD HH24:MI:SS.FF3' ) AS TIME_UTC,
TO_CHAR( SYS_EXTRACT_UTC(SYSTIMESTAMP) + INTERVAL '5' HOUR + INTERVAL '30' MINUTE, 'YYYY-MM-DD HH24:MI:SS.FF3' ) AS TIME_INDIA,
TO_CHAR( SYS_EXTRACT_UTC(SYSTIMESTAMP) - INTERVAL '4' HOUR, 'YYYY-MM-DD HH24:MI:SS.FF3' ) AS TIME_EST,
TO_CHAR( SYS_EXTRACT_UTC(SYSTIMESTAMP) - INTERVAL '7' HOUR, 'YYYY-MM-DD HH24:MI:SS.FF3' ) AS TIME_PST
FROM DUAL
Results:
| TIME_UTC | TIME_INDIA | TIME_EST | TIME_PST |
|-------------------------|-------------------------|-------------------------|-------------------------|
| 2015-09-11 10:04:22.482 | 2015-09-11 15:34:22.482 | 2015-09-11 06:04:22.482 | 2015-09-11 03:04:22.482 |
Related
I am trying to get time difference in Oracle database. The time difference for all the rows is okay except for one row. Here is the query
SELECT MAX(REGEXP_SUBSTR (CAST(TO_DATE(call_end, 'YYYY/MM/DD HH24:MI:SS') AS TIMESTAMP) - CAST(TO_DATE(call_start, 'YYYY/MM/DD HH24:MI:SS') AS TIMESTAMP), '\d{2}:\d{2}:\d{2}')) AS call_time
FROM calls
The time difference occurs with the following row:
call_end: '2020-02-20 13:00:20'
call_start: '2020-02-20 12:56:03'
The returned result is '11:55:43' which is wrong. As the correct answer should be '00:04:17'
It looks like your table already stores the call start/end times as dates, and you're doing an implicit conversion from date to string, then converting back to a date. You can see that result if you have HH instead of HH24 in your NLS_DATE_FORMAT setting:
alter session set nls_date_format = 'YYYY-MM-DD HH:MI:SS';
with calls (call_end, call_start) as (
select cast(timestamp '2020-02-20 13:00:20' as date), cast(timestamp '2020-02-20 12:56:03' as date) from dual
)
SELECT MAX(REGEXP_SUBSTR (CAST(TO_DATE(call_end, 'YYYY/MM/DD HH24:MI:SS') AS TIMESTAMP) - CAST(TO_DATE(call_start, 'YYYY/MM/DD HH24:MI:SS') AS TIMESTAMP), '\d{2}:\d{2}:\d{2}')) AS call_time
FROM calls;
CALL_TIME
---------------------------
11:55:43
When you do
TO_DATE(call_end, 'YYYY/MM/DD HH24:MI:SS')
because it's already a date you're really doing:
TO_DATE(TO_CHAR(call_end, <NLS_DATE_FORMAT>), 'YYYY/MM/DD HH24:MI:SS')
so with my setting (and yours must be similar, maybe with slashes instead of dashes) that is:
TO_DATE(TO_CHAR(call_end, 'YYYY-MM-DD HH:MI:SS'), 'YYYY/MM/DD HH24:MI:SS')
and the mismatch between HH and HH24 becomes more obvious. So, you're actually converting the strings 2020-02-20 01:00:20 and 2020-02-20 12:56:03 back to dates, and the time difference between 01:00:20 and 12:56:03 is 11:55:43. Well - actually, it is minus 11 hours:
SELECT CAST(TO_DATE(call_end, 'YYYY/MM/DD HH24:MI:SS') AS TIMESTAMP) - CAST(TO_DATE(call_start, 'YYYY/MM/DD HH24:MI:SS') AS TIMESTAMP)
FROM calls;
CAST(TO_DATE(CALL_E
-------------------
-00 11:55:43.000000
but your regex isn't picking that up.
As they are dates skip that part of the conversion completely, and just cast directly to timestamps if you want intervals to work from:
SELECT MAX(REGEXP_SUBSTR (CAST(call_end AS TIMESTAMP) - CAST(call_start AS TIMESTAMP), '\d{2}:\d{2}:\d{2}')) AS call_time
FROM calls;
CALL_TIME
---------------------------
00:04:17
or use a substring instead of a regex, as #MTO showed.
You could also leave them as dates, get the difference as a fraction of a day, add that back to any nominal date at midnight, and then convert the resulting date to a string:
SELECT TO_CHAR(date '2000-01-01' + MAX(call_end - call_start), 'HH24:MI:SS') AS call_time
FROM calls;
CALL_TIM
--------
00:04:17
This won't work properly for a call that lasts more than 24 hours (used to see that a lot with modem calls, but can still happen); but neither will your interval approach. Both ignore any full days and just show the remainder. There are ways to handle that of course, but you'd need to decide how you want to display it - with separate day count (like interval does anyway), or with the 'hours' number allowed to go above 24... but then you may go above 99 hours...
Your question shows the call end time as 2020-02-20 13:00:20, which suggests that's how your client is displaying it when you query the table. Some clients (I think PL/SQL Developer, but not sure, it's been a while) use their own preferences/settings instead of honouring the session's NLS settings. But that has no effect on how Oracle behaves internally when it has to do implicit conversions.
I'm not sure if you want the result as an interval or timestamp, but this should do what you want:
select t.*, call_end - call_start,
substr(to_char(call_end - call_start, 'HH24:MI:SS'), 12, 8) as str from (select timestamp '2020-02-20 13:00:20.000' as call_end,
timestamp '2020-02-20 12:56:03.000' as call_start
from dual) t
Here is a db<>fiddle.
Assuming your data types are strings (you really should store them as DATE data types), you can use:
SELECT SUBSTR(
MAX(
( TO_DATE( call_end, 'YYYY-MM-DD HH24:MI:SS' )
- TO_DATE( call_start, 'YYYY-MM-DD HH24:MI:SS' )
) DAY(1) TO SECOND
),
4,
8
) AS call_time
FROM calls
If they are already DATE data types then, in the MAX aggregation, just use:
( call_end - call_start ) DAY(1) TO SECOND
So for your data:
CREATE TABLE calls ( call_end, call_start ) AS
SELECT '2020-02-20 13:00:20', '2020-02-20 12:56:03' FROM DUAL
This outputs:
| CALL_TIME |
| :-------- |
| 00:04:17 |
db<>fiddle here
Mr Gyl, You can as well do: db <> fiddle :This solution will also consider when the call has lapsed over days by adding those hours together:
WITH da AS (
SELECT
NUMTODSINTERVAL(TO_DATE('2020-02-20 13:00:20', 'yyyy-mm-dd hh24:mi:ss') - TO_DATE('2020-02-20 12:56:03', 'yyyy-mm-dd hh24:mi:ss'), 'DAY') AS call_diff
FROM
dual ) SELECT
EXTRACT( DAY FROM call_diff )*24 + EXTRACT( HOUR FROM call_diff )|| ':' || EXTRACT( MINUTE FROM call_diff ) || ':' || EXTRACT( SECOND FROM call_diff ) DIFFERENCE
FROM
da
DIFFERENCE|
----------|
0:4:17 |
So you can implement as
WITH da AS (
SELECT
NUMTODSINTERVAL(TO_DATE(call_end, 'yyyy-mm-dd hh24:mi:ss') - TO_DATE(call_start, 'yyyy-mm-dd hh24:mi:ss'), 'DAY') AS call_diff
FROM
calls
) SELECT
EXTRACT( DAY FROM call_diff )*24 + EXTRACT( HOUR FROM call_diff )|| ':' || EXTRACT( MINUTE FROM call_diff ) || ':' || EXTRACT( SECOND FROM call_diff ) TIMESTAMP
FROM
da
Please see below response but this will only work within 24hrs and returns both '00'
WITH sample_lt AS(
SELECT '2020-02-20 12:56:03' START_TIME, '2020-02-20 13:00:20' END_TIME FROM dual
)
SELECT start_time,
end_time,
TO_CHAR (TRUNC (SYSDATE) + (to_date(end_time, 'yyyy-mm-dd HH24:MI:SS') -
to_date(start_time, 'yyyy-mm-dd HH24:MI:SS')
) , 'hh24:mi:ss' ) duration
FROM sample_lt ;
How can you create an Oracle DATE variable based on a date from a DATE column and a fixed string?
Ie: Use to_date with the date coming from mytable.date_col and the string being fixed at "05:30"?
You can convert to a string and back, ignoring any existing time part:
to_date(to_char(date_col, 'YYYY-MM-DD') || ' 05:30:00', 'YYYY-MM-DD HH24:MI:SS')
The to_char() gets just the date portion as a string, say '2015-04-15'. Your fixed time is then appended to that string, so it becomes '2015-04-15 05:30:00'. And that is then converted to a date, using a suitable matching format model.
Or take the date back to midnight using trunc() (assuming it may have a later time) and add the fraction of a day representing that time; which is 5.5 hours out of 24 hours so 5.5/24:
trunc(date_col) + 5.5/24
or the same thing with an interval:
trunc(date_col) + interval '0 05:30:00' day to second
Quick demo of all three:
with mytable (date_col) as (
select to_date('2016-04-15 15:16:17', 'YYYY-MM-DD HH24:MI:SS') from dual
)
select to_date(to_char(date_col, 'YYYY-MM-DD') || ' 05:30:00',
'YYYY-MM-DD HH24:MI:SS') as res1,
trunc(date_col) + 5.5/24 as res2,
trunc(date_col) + interval '0 05:30:00' day to second as res3
from mytable;
RES1 RES2 RES3
------------------- ------------------- -------------------
2016-04-15 05:30:00 2016-04-15 05:30:00 2016-04-15 05:30:00
I need a query output like the below table;
This is a primary entry to a table and these records will be modified by a third party program which I have no control. Can anyone suggest a good sample?
ID | DATEIN | DATEOUT | STATUS
1 02.02.2014 00:00:00 02.02.2014 23:59:59 1
2 03.02.2014 00:00:00 03.02.2014 23:59:59 0
I tried
SELECT To_Char(To_Date(SYSDATE), 'dd-MM-yyyy hh:mm:ss PM'),
To_Char(date_add(To_Date(SYSDATE +1), INTERVAL -1 SECOND), 'dd-MM-yyyy hh:mm:ss PM')
FROM dual
but this query throws an error ORA-00907: missing right parenthesis.
There is no need for PM if you want it to be in 24-hour format. And pay attention to the mask for minutes, it is mi, not mm as in your query. Also as already mentioned no need to convert SYSDATE to date as it is already of that datatype:
SELECT to_char(to_date(SYSDATE), 'dd-mm-yyyy HH24:mi:ss') date_in,
to_char(to_date(SYSDATE + 1) - INTERVAL '1' SECOND, 'dd-mm-yyyy HH24:mi:ss') date_out
FROM dual;
DATE_IN DATE_OUT
------------------- -------------------
11-03-2014 00:00:00 11-03-2014 23:59:59
You can do away with DATE_ADD and TO_DATE functions (SYSDATE is already a DATE, no need of conversion ) , and also use mi to show minute instead of mm which is format specifier for month as in:
SELECT To_Char(SYSDATE, 'dd-MM-yyyy hh:mi:ss PM'),
To_Char((SYSDATE + 1) + INTERVAL '-1' SECOND, 'dd-MM-yyyy hh:mi:ss PM')
FROM dual
I am not clear what you are trying to achieve from the above query but if parenthesis is your only problem then you gotta hit the query:
SELECT To_Char(To_Date((SYSDATE), 'dd-MM-yyyy hh:mm:ss PM')),
To_Char(date_add(To_Date(SYSDATE +1), INTERVAL -1 SECOND), 'dd-MM-yyyy hh:mm:ss PM')
FROM dual
Assuming this has a simple solution, but I can't find it.
I'm trying to do some logic on a DATE field in Oracle. My desire is to take a DATE field and subtract X hours from it.
For instance: SELECT A.MyDATE - 100 Hours from dual;
however, I need a result in a timestamp format 'YYYY-MM-DD hh:mm'.
I've tried CAST(A.MyDATE as TIMESTAMP) - NUMTODSINTERVAL(100/24,'day') however it didn't work.
I found out that the issue is that the MyDATE field when cast to a timestamp still contained some residual time elements. How can I reset these??
Thanks!
You can just do this with subtraction:
select a.MyDate - 100.0/24
To convert to varchar:
select to_char(a.MyDate - 100.0/24, 'YYYY-MM-DD')
And, if you want to get rid of that pesky time on the date:
select trunc(a.MyDate - 100.0/24) as JustTheDate
The formats and dates in my example can be changed to any other formats and dates:
SELECT To_Timestamp(To_Char(Sysdate - INTERVAL '100' HOUR, 'MM/DD/YYYY HH24:MI'), 'MM/DD/YYYY HH24:MI')
FROM dual
/
Output:
2/4/2013 10:18:00.000000000 AM
To remove time element add Trunc() to any of your dates...:
SELECT Trunc(To_Timestamp(To_Char(Sysdate - INTERVAL '100' HOUR, 'MM/DD/YYYY HH24:MI'), 'MM/DD/YYYY HH24:MI'))
FROM dual
/
Output: 2/4/2013
Conversion/Casting - when using other dates in place of sysdate then add formats as in my other examples:
SELECT CAST(SYSDATE AS TIMESTAMP) - INTERVAL '100' HOUR FROM dual
/
Output: 2/4/2013 10:26:35.000000000 AM
SELECT start_date tstamp_to_date, CAST(start_date AS timestamp) date_to_tstamp FROM
(
SELECT to_date(to_char(to_timestamp ('2013-02-07 10:07:47.000' , 'YYYY-MM-DD HH24:MI:SS.FF'),'DD-MON-YYYY HH24:MI:SS'), 'DD-MON-YYYY HH24:MI:SS') start_date
FROM dual
)
/
Output:
tstamp_to_date date_to_tstamp
-------------------------------------------------------
2/7/2013 10:07:47 AM 2/7/2013 10:07:47.000000 AM
In Oracle, a DATE always has a day and a time component. Depending on the tool you are using and your session's NLS_DATE_FORMAT, it is entirely possible that the tool may not display the time component when you look at the data. But that is simply a display question, it has no impact on the actual data.
If you want to subtract 100 hours from midnight on the day that MyDate represents
SELECT TRUNC(MyDate) - interval '100' hour
FROM dual
This will return a DATE. If you want to return a string in a particular format
SELECT TO_CHAR( TRUNC(MyDate) - interval '100' hour, 'YYYY-MM-DD hh:mi am' )
FROM dual
Note that I'm assuming that there was a typo in your question. I assume that you want to display the minutes after the hour (mi) rather than the month (mm).
I am trying to fetch the records which is older than 30 days (from Mod_date) and I am using the below query and it is returning all the data and I want only 30 days old data.
Sample :- Mod_date 03-NOV-12 12.00.00.000000000 AM
Query :-
select Mod_date from fil_cnfact where Mod_date <= sysdate -30 order by Mod_date asc ;
We have times stored in an Oracle varchar(5) field.
Times stored using HH24:MI (ie: 22:30, 10:15).
How can we run a query that will increase or decrease these times by a certain amount? Ie: increase by one hour or decrease by 45 minutes.
you could use the built-in date (and interval -- thanks Alex for the link) calculation:
to_char(to_date(:x, 'hh24:mi') + INTERVAL :y MINUTE,'hh24:mi')
for instance:
SQL> WITH my_data AS (
2 SELECT '12:15' t FROM dual
3 UNION ALL SELECT '10:30' FROM dual
4 )
5 SELECT t,
6 to_char(to_date(t, 'hh24:mi') + INTERVAL '15' MINUTE,'hh24:mi')"t+15"
7 FROM my_data;
T t+15
----- -----
12:15 12:30
10:30 10:45
The functions to convert from/to date and char are TO_DATE() and TO_CHAR():
SELECT
TO_DATE('31/12/2001 23:55:00', 'DD/MM/YYYY HH24:MI:SS') AS "DATE",
TO_CHAR(CURRENT_TIMESTAMP, 'DD/MM/YYYY HH24:MI:SS') AS "CHAR"
FROM DUAL
So you can do:
SELECT
TO_DATE('23:45', 'HH24:MI'),
TO_DATE('23:45', 'HH24:MI') + INTERVAL '45' MINUTE,
TO_CHAR(TO_DATE('23:45', 'HH24:MI') + interval '45' MINUTE, 'HH24:MI')
FROM DUAL
There're possibly other better ways to do it (I'm not sure this will work as expected if ran when DST is about to start) but I'm still learning :)