I have a table with some columns of Date datatype. I need to keep the Date part as it is, but I need to format the time part to 00:00:00 for all of them.
For example:
09-FEB-14 09:00:00
10-MAR-12 12:00:00
I need to update them to:
09-FEB-14 00:00:00
10-MAR-12 00:00:00
How can I do this?
Since you appear to want to truncate the time part back to midnight then you can just use the TRUNC function:
UPDATE your_table
SET date_column = TRUNC( date_column )
If, instead, you want to set them to a specific time then you can use TRUNC and add an INTERVAL literal:
UPDATE your_table
SET date_column = TRUNC( date_column ) + INTERVAL '12:34:56' HOUR TO SECOND;
If you want to take an hour off the time then you can subtract an INTERVAL literal:
UPDATE your_table
SET date_column = date_column - INTERVAL '1' HOUR;
or subtract a fraction of a day:
UPDATE your_table
SET date_column = date_column - 1/24;
Related
how to get previous month or last two month data in oracle.
My date format is YYYY,MM,DD.
from google search i got those solution,
select * from IM_LAPTOP
where ADD_DATE >= add_months(sysdate, -12);
select *
from IM_LAPTOP
where ADD_DATE between add_months(trunc(sysdate,'mm'),-1) and last_day(add_months(trunc(sysdate,'mm'),-1));
But its showing not a valid month
My date format is YYYY,MM,DD
Unless you are using a string to store dates then, no, it is not; a DATE is a binary data type (consisting of 1-byte for each of: century, year-of-century, month, day, hour, minute and second and it always has those components) and it has no format.
how to get previous month or last two month data in oracle
To get the data from 2 months before this instant in time (i.e. if it is now 2021-04-05 16:39:24 and you want it from 2021-02-05 16:39:24, two months prior) then:
SELECT *
FROM your_table
WHERE date_column >= ADD_MONTHS( SYSDATE, -2 )
To get the data starting from midnight on the 1st day of last month:
SELECT *
FROM your_table
WHERE date_column >= ADD_MONTHS( TRUNC( SYSDATE, 'MM' ), -1 )
If you only want the data from the preceding month then:
SELECT *
FROM your_table
WHERE date_column >= ADD_MONTHS( TRUNC( SYSDATE, 'MM' ), -1 )
AND date_column < TRUNC( SYSDATE, 'MM' )
If your "date" is actually a VARCHAR2 column with the format YYYY,MM,DD then you should change it to a DATE column but if for some reason you cannot then at least the characters are in order of highest-to-least significance and you can perform an alphanumeric comparison and just wrap the right-hand side of the filters in TO_CHAR:
SELECT *
FROM your_table
WHERE date_column >= TO_CHAR( ADD_MONTHS( SYSDATE, -2 ), 'YYYY,MM,DD' )
How can I get data of the current week in Oracle? Assume that the week goes from Sunday to Saturday
SELECT * FROM TABLENAME
WHERE DATEFIELD IS {WITHIN CURRENT WEEK THAT GOES FROM 12AM ON SUNDAY TO 11:59PM ON SATURDAY}
Use Oracle trunc(sysdate,'IW') returns the first day of the week and add 6 to get the end of week.
-- not tested
SELECT * FROM TABLENAME
WHERE DATEFIELD >= trunc ( sysdate, 'iw' )
AND DATEFIELD < trunc ( sysdate, 'iw' ) + 5
I create query which display all item which is cancel in period
start.date - end.date
select substr(tarifa,1,2) as tarifa, count(*) as komada
from pol p, uvod u, doppov d
WHERE (datum_dop >='1-jan-07') AND (datum_dop<='1-jul-13')
and izdavanje>='01-jul-10'
and p.orgjed = u.sorgz (+)
and p.polica=d.polica and d.pov_dopl='P'
--and DATUM_PREKIDA is not null
and d.status='F'
and cisti_ao(p.polica)!=0
group by substr(tarifa,1,2)
Now I want to edit this query column izdavanje. If user enter '27-sep-xx year' it need to display item in period start-date '01-jan-xx' until '27-sep-xx year'
So start date need to be always '1-jan-xx year' and end date need to be entered date like '19-aug-xx'.
Any idea how to fix this problem ?
This:
and izdavanje>='01-jul-10'
will become
and izdavanje between to_date('01.01.' || substr(:BLOK.IZDAVANJE, -2), 'dd.mm.rr')
and to_date(:BLOK.IZDAVANJE, 'dd-mon-rr')
substr will return xx year
to_date will convert the whole value into a valid date
Now, as it is Forms, you might need to adjust it a little bit (depending on column datatype as well as form item's datatype), but - that's the general idea.
You want to use TRUNC( date_value, 'YY' ) to truncate it to the start of the year:
AND izdavanje BETWEEN TRUNC( '01-jul-10', 'YY' ) AND '01-jul-10'
However, you should also note that '01-jul-10' is a text literal so, when a date is required, Oracle has to perform an implicit conversion from the text literal to a date. You would be better performing an explicit conversion (as Oracle's default format is the NLS_DATE_FORMAT session parameter and ANY user can change this value in their own session and changing that will break your query without any modification of your code).
For example, to perform an explicit cast to a date:
AND izdavanje BETWEEN TRUNC(
TO_DATE( '01-jul-10', 'DD-MON-RR', 'NLS_DATE_LANGUAGE = American' ),
'YY'
)
AND TO_DATE( '01-jul-10', 'DD-MON-RR', 'NLS_DATE_LANGUAGE = American' )
Also, if your izdavanje date values have time components then '01-jul-10' will be converted to a date at midnight (00:00:00) so you will not get any values returned for that day that have time components between 2010-07-01 00:00:01 and 2010-07-01 23:59:59. If this is relevant and you want those values returned then you should use:
AND izdavanje >= TRUNC(
TO_DATE( '01-jul-10', 'DD-MON-RR', 'NLS_DATE_LANGUAGE = American' ),
'YY'
)
AND izdavanje < TO_DATE( '01-jul-10', 'DD-MON-RR', 'NLS_DATE_LANGUAGE = American' )
+ INTERVAL '1' DAY
You can modify a date inside a query using TO_CHAR() function:
Instead of:
and izdavanje>='01-jul-10'
use this:
and izdavanje between TO_CHAR( :BLOK.IZDAVANJE, 'YYYY-01-01' )
and TO_CHAR( :BLOK.IZDAVANJE, 'YYYY-MM-DD 23:59:59' )
TO_CHAR( :BLOK.IZDAVANJE, 'YYYY-01-01' ) takes only the year from the date and adds '-01-01' (January 1st) to it.
TO_CHAR( :BLOK.IZDAVANJE, 'YYYY-MM-DD 23:59:59' ) adds the max time of the day to the date because 'between xxx and yyy' means equal or less than 00:00:00 of day yyy and all timestamps with a timestamp greater than 00:00:00 but the same day won't be covered when using time values in :BLOK.IZDAVANJE.
I need to change the hour value of data stored in the Date variable.Is this possible in Oracle ?
Oracle Setup
CREATE TABLE your_table ( value DATE );
INSERT INTO your_table VALUES ( SYSDATE );
Add one hour to the date:
UPDATE your_table
SET value = value + INTERVAL '1' HOUR;
Change the hour to 8am (without changing the year/month/day/minute/second):
UPDATE your_table
SET value = value + NUMTODSINTERVAL(
8 - EXTRACT( HOUR FROM CAST ( value AS TIMESTAMP ) ),
'HOUR'
);
To set the time to a new time:
Change the time from the current value to 14:56:27:
UPDATE your_table
SET value = TO_DATE(
TO_CHAR( value, 'yyyy-mm-dd' ) || ' 14:56:27',
'yyyy-mm-dd hh24:mi:ss'
)
or
UPDATE your_table
SET value = TRUNC( value ) + INTERVAL '14:56:27' HOUR TO SECOND;
I have a table wchih has 2 columns. The definition is
CREATE TABLE LOGGING_T
(
TSTAMP DATE,
LINE VARCHAR2(300)
)
TABLESPACE OPERATIONS
MONITORING
/
The colulmn TSTAMP has values like 30-NOV-11, 29-NOV-11 ... and so on. Now i am doing this query
select * from LOGGING_T where TSTAMP >= (SYSDATE - 1)
The current system date is 01-DEC-11. Ideally, the above statement should return records which has TSTAMP = 30-NOV-11 since i am doing SYSDATE-1 which would be 30-NOV-11. But it isn't fetching those records. Why?
However, if i do this query
select * from LOGGING_T where TSTAMP >= (SYSDATE - 2)
Then it fetches records who TSTAMP is 30-NOV-11. Am i doing something wrong in this simple date operation?
A DATE contains time of day as well as the date.
If SYSDATE was 2011-12-01 1:18:00 PM then SYSDATE-1 would be 2011-11-30 1:18:00 PM.
Are the rows you are expecting to find from November 30th before or after the time element?
If you don't care about the time, and only want to filter based on the date, you can use TRUNC():
select *
from LOGGING_T
where TRUNC(TSTAMP) >= TRUNC(SYSDATE - 1);
You'll may or may not want to make sure both sides of your comparison operator are TRUNC()ed because TRUNC() will just force the time element of the date to be midnight.
select to_char(trunc(sysdate), 'YYYY-MM-DD HH:MI:SS PM')
from dual;
NOW
----------------------
2011-12-01 12:00:00 AM
The value SYSDATE has the time component as well. Most probably the date in your database also has the time component.
Change your query to :
select * from LOGGING_T where TSTAMP >= TRUNC(SYSDATE - 1)
to see all records which were logged from 00:00 yesterday.
To see the actual timecomponents, use to char.
SQL> select sysdate from dual;
SYSDATE
---------
01-DEC-11
1* select to_char(sysdate,'DD-Mon-YYYY HH24:MI:SS') date1 from dual
SQL> /
DATE1
--------------------
01-Dec-2011 16:29:01