SQL & PL/SQL :: Date Math And Daylight Savings Time
May 25, 2010
I am trying to get the number of seconds between March 3 2010 and march 31 2010 in Oracle. I am in Eastern time in the US. Everything I try just keeps coming up with 30 days * 86400 seconds per day = 2592000. 1 hour was lost when we switched to daylight savings time so the correct answer is 2588400.
How do a create a function in Oracle that will give me the number of seconds between 2 dates or timestamps that is aware of the loss of an hour in March and the gain of an hour in November?
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Nov 8, 2012
How can I convert a DATE to EPOCH time taking care of daylight savings?
I tried with this code but there is a difference of 36000 seconds. eg:Sysdate_To_Epoch('04-Sep-2012') gives 1346716800 whereas it should give 1346680800.
CREATE OR REPLACE FUNCTION Sysdate_To_Epoch(v_date IN DATE)
RETURN NUMBER
IS
[Code]....
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Mar 29, 2012
My database stores time in GMT.. but my application stores time in CST..
I need to convert them from GMT to CST considering DAYLIGHT TIME SAVING as well by using Sql query..
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Apr 23, 2012
During the daylight savings time our scheduler jobs are running either an hour before/after depending upon the time switch.
I went through the Oracle documentation and found below suggestions which I have already tried in vain.
Document says scheduler first picks the timezone from the start date of the job if provided so i tried setting the start date using the TO_TIMESTAMP_TZ('2012/01/22 18:50:00 US/Eastern','yyyy/mm/dd hh24:mi:ss tzr') which did not fix the problem. I have noticed that oracle automatically converted into tzh:tzm format.
second solution: setting default timezone of scheduler to the TZR i.e (US/Eastern) instead of the TZh:TZM value. I did that using below script
BEGIN
DBMS_SCHEDULER.set_scheduler_attribute (
attribute => 'default_timezone',
value => 'US/Eastern');
END;
above 2 solutions did not work for me. I have read on internet from some article that below query should return something like
"4/23/2012 11:02:13 US/Eastern" after setting the default timezone of scheduler to TZR but I am still getting "4/23/2012 11:02:13.715816000 AM -04:00".
select dbms_scheduler.stime
from dual;
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Jan 27, 2013
the time in my online application is 1 hour later than is actually is. So 21.30is actually 20.30. This is my code:
select 1
from vex_rondes rde
where rde.datum_einde < current_timestamp
and rde.id = b_rde_idrde.datum_einde
is a date column filled with dates of course ins this format: 10-01-2013 20:45 (10th January 2013 20h45).How can I get this current_timestamp correct?
select 1
from vex_rondes rde
where rde.datum_einde+(1/24) < current_timestamp
and rde.id = b_rde_idbut that's not very elegant nor generic...
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Jun 4, 2012
When I try to extract the date tag value from XML data, the time stored in 20120602153021 format i.e., YYYYMMDD24HHMISS format. The following statement extracts only date as 02-JUN-12 however do not extract the time part.
If I try the same in SQLplus with to_date it works however fails in PL/SQL.
XML data:
<?xml version="1.0"?>
<RECORD>
<REGTIMESTAMP>20120601130010</REGTIMESTAMP>
</RECORD>
PL/SQL Extract:
CURSOR c_xml_record
IS
SELECT extract(value(d), '//ACTIVATIONTS/text()').getStringVal() AS REGTIMESTAMP,
FROM t_xml_data x,
[code].......
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Jun 6, 2012
I am not able to load complete date along with time in the date column. here is my table desc
DESC STAGE
Name Null Type
----------------------------------
TABLE_NAME NOT NULL VARHCAR(20)
RECORDCOUNT NUMBER
CREATED_DATE NOT NULL DATE
my control file is like this
LOAD DATA
APPEND
INTO TABLE SCOOP.STAGE
FIELDS TERMINATED BY ","
( TABLE_NAME
,RECORDCOUNT
,CREATED_DATE DATE(16) "YYYYMMDDHH:Mi:SS"
)
the data gets loaded, but it appears like this in the table
HIGHSCHOOL3080606-JUN-12
MIDDLESCHOOL8768006-JUN-12
BUT I WANT COMPLETE DATE AND TIME (HH:MI:SS) , HOW CAN I GET IT (THIS IS HOW I WANT 06-JUN-12 11:07:33)
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Dec 23, 2012
I want to reset my date to this format: 12/31/2012 11:59:59 PM - see code below:
DECLARE
v_latest_close DATE;
BEGIN
v_latest_close := TO_DATE ('12/31/2012 23:59:59 ','MM/DD/YYYY HH24:MI:SS');
DBMS_OUTPUT.PUT_LINE('The new date format is : '|| v_latest_close);
END;
the code above displays only : 12/31/2012 instead of 12/31/2012 11:59:59 PM
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Sep 16, 2011
I need to convert the type of GMT to Local time, during data entry. I have a source table and a target table.
To make the insert get the most value, I have no problems:
insert into destination (SELECT * FROM WHERE source pointnumber = (SELECT MAX (pointnumber) FROM source));
But since times are different between the tables, I want to convert the data obtained to GMT -4:30 Time (Caracas - Venezuela), before inserting it.
I can use a function?
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May 21, 2013
I am having problems with the XMLTable function. I cant get it to see the entire date/time value in a date field. This wont work
select x1.* from XMLTABLE('/DOCUMENT' passing xmltype('<DOCUMENT><STR>abc def ghi</STR><NUM>1234</NUM><DT>2013-02-17T04:24:02</DT></DOCUMENT>') columns STR varchar2(25), NUM number, DT date) x1;
However if I change the DT tag to just the date only "2013-02-17" it works. Why wont Oracle see the entire date/time format even if its ISO 8601 compliant?
Oracle DB: 11.2.0.3.0
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Feb 9, 2011
I got 4 fields:
event_date (01/01/1900 hh:mm:ss)
team_count (number)
interview_count (number)
duration (01/01/1900 hh:mm:ss) - duration of each interview
The calculation is:
(interview_count * team_count * duration(hh:mm)) + event_date
i.e.:
(3 * 2 * 02:30) + 01/01/1900 08:00:00
= 15:00:00 + 01/01/1900 08:00:00
= 01/01/1900 23:00:00.
all I care about is the hh:mm in the result.How can I preform this calculation in pl/sql?
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Jun 22, 2008
I have a user interface where the user can enter a formula using a set of parameters and operators. For eg , the user is given a list of parameters, say : Width, Height , Gauge. The list of operators include standard math functions : + - / * ^
He can select and create a formula like gauge * width. This is stored in a table. At a later time a job is scheduled to evaluate the formula based on parameters for width, gauge and height.
I can evaluate the expression by substituting each parameter.
I can do this using dynamic sql. However I'm not sure how to evaluate the ^ symbol. The equivalent of this is power function.
So if a user enters (height * 2) + (width^2) . How do i evaluate this. I am doing this in pl/sql.
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Mar 27, 2013
Is there a way to estimate the storage savings for Hybrid Columnar Compression (HCC) in Oracle Exadata x3-2 machine ?
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Feb 21, 2011
I have one table with 10 rows and its frequently updated now my question is that, how can it get the latest date of updation of that rows?
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Apr 24, 2005
I only know to retrieve data (date & time) by the following statement : "select sysdate from ..."
but now I want to make the fields current date and current time separately and put in a adult file with these two fields. how to do it.
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Sep 28, 2011
I had a database at microsoft access but i had move it to the oracle database.
When i check the datatype at oracle, date column is at DATE datatype. but it only display date. like in oracle. it display:
oracle_date.PNG ( 74.61K )
Number of downloads: 4
But when i link it to microsft access. like i will control the oracle from access. the result is at below:
access_date.PNG ( 136.11K )
Number of downloads: 3
So, my problem is how to display the date and time fully in oracle?
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Mar 1, 2010
iam having a table A where column ABC is a varchar field with varchar2(50).
currently data stored is like this.
02-27-2009 11:01:33
02-27-2009 11:01:46
03-06-2009 09:07:18
now i want UTC Date time should be in format 2010-02-24T17:08:09Z. in the above format.
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Apr 3, 2012
is there possible to retrieve date with its time in oracle ,if we didnot provide time while insertion? like hiredate column of emp table can we get hiredate of each emp with its time of joining. i am using "11g Enterprise Edition Release 11.2.0.1.0"
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Nov 1, 2012
I have a question with Oracle sql developer, i've installed oracle 11g express edition, and i want to insert values 'date' and 'time', but i only got the resultat like this:
Who can tell me how can i do to show just date info in 'date' and same for the 'time'?
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Jun 10, 2011
T1 = 06-Jun-2011 4:00PM
T2 = 10-Jun-2011 11:AM
Calculation is Required.
If at the end of Day Hours of T1 > 6 hours then it should calculate 1 Day.
same with T2. hours of T2(from begining of Day till end Time (11AM), it should again caculate if >6 hours then 1 Day.
remaining will be date calculation. this is how T2 - T1 should give us 5 Days.
Detail
06-Jun-2011 4:00PM to 06-Jun-2011 12:00AM (8 hours > 6 = 1 Day)
06-Jun-2011 12:00AM to 07-Jun-2011 12:00AM = (1 Day)
07-Jun-2011 12:00AM to 08-Jun-2011 12:00AM = (1 Day)
08-Jun-2011 12:00AM to 09-Jun-2011 12:00AM = (1 Day)
09-Jun-2011 12:00AM to 10-Jun-2011 12:00AM = (1 Day)
10-Jun-2011 12:00AM to 10-Jun-2011 11:00AM (11 hrs > 6 = 1 Day)
this is how 5Days calculation is required.
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Apr 4, 2010
I am converting data from an old paradox table to a new oracle table, one of the problems im having is incompatibility with date and time formats:
some columns contain times in the format : "00:00:00" eg..... "15:00:00"
some columns have date in the format: "dd/mm/yyyy" eg....... "21/08/2000"
some columns have time and date eg.. "05/09/2000 15:49:39"
Currently I have the data held in tables within an access database, and in CSV format.
eg, I have dates like 03/04/2010 which i need to be 03-APR-10....
how I can get the following into Oracle date formats? there is over 1000 records so manual conversion is out of the question
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Jul 21, 2011
I have the following piece of
SELECT decode(substr('18900607|000000|20110718112109|23972|002',
17,
14),
'00000000000000',
NULL,
(to_date(substr('18900607|000000|20110718112109|23972|002',
17,
14),
'YYYY/MM/DD HH24:MI:SS')))
FROM dual;
When I run the above code I get an incorrect display ie. "18-JUL-11". when I remove the decode I get the correct display ie."2011/07/18 11:21:09 AM"
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Apr 19, 2013
Create table time_in (
Emp_id varchar2(6),
at_date date,
time_in varchar2(6),
status varchar2(2)
)
[Code]....
-------------- required restul----------
emp_id at_date time_in at_date time_out
------ ------- ------- -------- --------
00009 16/03/2013 09:47 17/03/2013 09:45
00009 17/03/2013 09:48 17/03/2013 10:43
00009 18/03/2013 09:57
00009 19/03/2013 09:38 19/03/2013 05:22
00009 20/03/2013 09:48 20/03/2013 05:24
status 01 = time in
status 02 = time out
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Aug 17, 2011
SQL> desc guide;
Name Null? Type
----------------------------------------- -------- ----------
GUIDE_ID NOT NULL NUMBER(20)
CHANNEL_ID NOT NULL NUMBER(5)
SHOW_DATETIME DATE
[code]....
when I run this query it only displays the date but no time.how to display it with the date and time?
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May 13, 2013
I have a sql id,I want to figure out how many number of times that sql was executed since last 30 days.I can get some details from dba_hist_active_sess_history.
But how to get count(total executions in one day )like wise for 30 days or so.and How can i map SNAP_ID to date&time .
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Dec 15, 2012
We have oracle 10g R2 on windows...
I have a table test and it contains date datatype column JDATE;
SQL> desc test
Name Null? Type
----------------------------------------- -------- --------------------
EMPNO NUMBER
EMPTYPE VARCHAR2(20)
SALARY NOT NULL NUMBER
JDATE DATE
DEPTNO NOT NULL NUMBERSELECT TO_CHAR(JDATE,'DD/MM/YYYY HH24:MI:SS') JDATE FROM DUAL;
JDATE
1/11/2010 4:17:29 PM
1/11/2010 4:15:47 PM
1/5/2010 3:50:44 PMIn the above case i want to update test table and increase the minut of each row by 1 minut.
like
for 1/11/2010 4:17:29 PM It would be like 1/11/2010 4:18:29 PM.
for 1/11/2010 4:15:47 PM it would be like 1/11/2010 4:16:47 PM.Can we do this...
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Dec 6, 2012
converting text values that I have to date and time format (without the millisecs and AM/PM values).
The following is an example:
04-DEC-12 07.47.58.000 AM
or would i need to change this in excel before importing this type of data.
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Jan 31, 2013
I am running following statement
select TO_DATE( TO_CHAR(CAST((B.EOAWDTTM_MODIFIED) AS TIMESTAMP),'YYYY-MM-DD-HH24.MI.SS.FF'),'YYYY-MM-DD') from PS_SR_EX_ER_AW_VW B where rownum < 5
and It gives me the error
ORA-01830: date format picture ends before converting entire input string 01830. 00000 - "date format picture ends before converting entire input string"
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Aug 19, 2010
When I select sysdate from dual it shows me the time in EST. But when I try to fetch the time from a column which is being updated almost every minute with sysdate of the time it is being updated, it shows me the time in UTC that is 4 hours added to the time when it was logged.
SQL> select * from nls_database_parameters;
PARAMETER VALUE
------------------------------ ----------------------------------------
NLS_LANGUAGE AMERICAN
NLS_TERRITORY AMERICA
NLS_CURRENCY $
NLS_ISO_CURRENCY AMERICA
NLS_NUMERIC_CHARACTERS .,
NLS_CHARACTERSET WE8ISO8859P1
NLS_CALENDAR GREGORIAN
NLS_DATE_FORMAT DD-MON-RR
NLS_DATE_LANGUAGE AMERICAN
NLS_SORT BINARY
NLS_TIME_FORMAT HH.MI.SSXFF AM
[code]..
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Mar 3, 2011
I am working with Oracle 8i and I have a problem while applying the below query:
select to_char(ENTRYDATE,'MM-DD-YYYY HH24:MI:SS') from TBL_BANDWIDTH_READS
where ENTRYDATE > sysdate-1
and rownum <10
03-03-2011 00:00:00
03-03-2011 00:00:00
03-03-2011 00:00:00
03-03-2011 00:00:00
[code].....
The time appears as 00:00:00. I said it's something weird because if I take the where condition off, then something like this appears:
select to_char(ENTRYDATE,'MM-DD-YYYY HH24:MI:SS') from TBL_BANDWIDTH_READS
12-22-2006 13:13:27
12-22-2006 13:13:27
12-22-2006 13:13:27
12-22-2006 13:13:27
12-22-2006 13:13:27
12-22-2006 13:13:27
12-22-2006 13:13:27
I am using the same query on a different table and there's no problem on it:
select to_char(ENTRYDATE,'MM-DD-YYYY HH24:MI:SS') from TBL_XX_PROGRAM
where ENTRYDATE > sysdate -10 and rownum <10
03-03-2011 17:06:48
03-03-2011 17:06:48
03-03-2011 16:59:08
03-03-2011 16:59:08
03-03-2011 12:04:21
I checked the DDL of both tables and the only difference is that the TBL_XX_PROGRAM have the ENTRYDATE field defined as not null and the ENTRYDATE on the TBL_BANDWIDTH_READS does not have the same constraint, could it affect?
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