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https://stackoverflow.com/questions/30772434/how-to-subtract-hours-from-a-date-in-oracle-so-it-affects-the-day-also
I'm trying to subtract date from Oracle so it even effect the day as well. For example, if the timestamp is 01/June/2015 00 hours and if I subtract 2 hours, I want to be able to go to to 31/May/2014 22 hours. I tried. to_char(sysdate-(2/11), 'MM-DD-YYYY HH24') but it only subtracts the hour; it does not touch the day itself.
https://community.oracle.com/tech/developers/discussion/26777/how-to-subtract-time-from-sysdate
I want to subtract time from sysdate and get the sysdate with time. Example : = (Sysdate with time)03-mar-2002 16:40:55 - 8 (hours). The result should be like :03-mar-2002 08:40:55 How to write a query for this?. Please let me know as soon as possible. Thanks, Ravi.
https://www.oracletutorial.com/oracle-date-functions/oracle-sysdate/
The following example returns the current date and time of the OS where the Oracle Database resides: SELECT TO_CHAR ( SYSDATE, 'MM-DD-YYYY HH24:MI:SS') FROM dual; Code language: SQL (Structured Query Language) (sql) In this example, we used the TO_CHAR () function to format the current system date and time value returned by the SYSDATE function.
https://p2p.wrox.com/oracle/8930-how-subtract-hours-sysdate-oracle.html
How to subtract hours from sysdate in oracle. There are no SQL functions that works on the current row and the previous or next row. The functions work across all rows. What you'll need to do is write a PL/SQL procedure or function or anonymous block, where your select statement is a cursor, and process the rows of the cursor, using extra ...
https://stackoverflow.com/questions/28888848/how-to-subtract-years-from-sysdate
Note that subtracting intervals can be problematic. If your sysdate is a Feb 29, subtracting a number of years will fail if the resulting year is not a leap year. Now, in this case, since you're subtracting a multiple of 4, you're safe until 2120 which is probably good enough. If you were to subtract a different interval, though, you might have ...
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