Oracle Add 1 hour in SQL

Question

I am just trying to add 1 hour to a value  it is kind of complicated on where and why i am doing this but basically i just need to query something like this   select DATE ADD hh 1  2014-10-15 03 30 00 pm   from dual   I keep reading old articles that say to use dateAdd or date add but I keep getting invalid identifier errors

User · Answer

The calculation is simple

if you want to add 1 hour in the date .

every day have 24 hour , you can add .

select sysdate + 1/24 from dual;

if you want 1 day to add

select sysdate + 24/24 from dual; 

or 

select sysdate + 1 from dual; 

same as for 2, 3 , 4 day

For static date you have the answer below.

User · Answer

Old way   SELECT DATE COLUMN   1 is adding a day SELECT DATE COLUMN   N  24 to add hour s  - N being number of hours SELECT DATE COLUMN   N  1440 to add minute s  - N being number of minutes SELECT DATE COLUMN   N  86400 to add second s  - N being number of seconds   Using INTERVAL   SELECT DATE COLUMN   INTERVAL  N  HOUR or MINUTE or SECOND - N being a number of hours or minutes or seconds

User · Answer

Use an interval   select some date column   interval  1  hour  from your table

User · Answer

You can use INTERVAL type or just add calculated number value -  1  is equal  1 day    first way   select date column   INTERVAL  0 01 00 00  DAY TO SECOND from dual    second way   select date column   1 24 from dual    First way is more convenient when you need to add a complicated value - for example   1 day 3 hours 25 minutes 49 seconds   See also  http   www oracle-base com articles misc oracle-dates-timestamps-and-intervals php  Also you have to remember that oracle have two interval types - DAY TO SECOND and YEAR TO MONTH  As for me  one interval type would be better  but I hope people in oracle knows  what they do

User · Answer

select sysdate   1 24 from dual    sysdate is a function without arguments which returns DATE type   1 24 adds 1 hour to a date  select to char to date  2014-10-15 03 30 00 pm    YYYY-MM-DD HH MI SS pm     1 24   YYYY-MM-DD HH MI SS pm   from dual

User · Answer

To add subtract from a DATE  you have 2 options    Method  1    The easiest way is to use   and - to add subtract days  hours  minutes  seconds  etc   from a DATE  and ADD MONTHS   function to add subtract months and years from a DATE  Why   That s because from days  you can get hours and any smaller unit  1 hour   1 24 days    1 minute   1 1440 days   etc    But you cannot get months and years  as that depends on the month and year themselves  hence ADD MONTHS   and no add years    because from months  you can get years  1 year   12 months    Let s try them    SELECT TO CHAR SYSDATE   DD-MON-YYYY HH24 MI SS               FROM dual         -- prints current date     19-OCT-2019 20 42 02  SELECT TO CHAR  SYSDATE   1 24    DD-MON-YYYY HH24 MI SS      FROM dual         -- prints date   1 hour    19-OCT-2019 21 42 02 SELECT TO CHAR  SYSDATE   1 1440    DD-MON-YYYY HH24 MI SS    FROM dual         -- prints date   1 minute  19-OCT-2019 20 43 02  SELECT TO CHAR  SYSDATE   1 86400    DD-MON-YYYY HH24 MI SS   FROM dual         -- prints date   1 second  19-OCT-2019 20 42 03  -- Same goes for subtraction   SELECT SYSDATE                  FROM dual        -- prints current date      19-OCT-19 SELECT ADD MONTHS SYSDATE  1    FROM dual        -- prints date   1 month    19-NOV-19 SELECT ADD MONTHS SYSDATE  12   FROM dual        -- prints date   1 year     19-OCT-20 SELECT ADD MONTHS SYSDATE  -3   FROM dual        -- prints date - 3 months   19-JUL-19   Method  2   Using INTERVALs  you can or subtract an interval  duration  from a date easily  More than that  you can combine to add or subtract multiple units at once  e g 5 hours and 6 minutes  etc    Examples    SELECT TO CHAR SYSDATE   DD-MON-YYYY HH24 MI SS                                          FROM dual         -- prints current date                  19-OCT-2019 21 34 15 SELECT TO CHAR  SYSDATE   INTERVAL  1  HOUR    DD-MON-YYYY HH24 MI SS                    FROM dual         -- prints date   1 hour                 19-OCT-2019 22 34 15 SELECT TO CHAR  SYSDATE   INTERVAL  1  MINUTE    DD-MON-YYYY HH24 MI SS                  FROM dual         -- prints date   1 minute               19-OCT-2019 21 35 15 SELECT TO CHAR  SYSDATE   INTERVAL  1  SECOND    DD-MON-YYYY HH24 MI SS                  FROM dual         -- prints date   1 second               19-OCT-2019 21 34 16 SELECT TO CHAR  SYSDATE   INTERVAL  01 05 00  HOUR TO SECOND    DD-MON-YYYY HH24 MI SS   FROM dual         -- prints date   1 hour and 5 minutes   19-OCT-2019 22 39 15 SELECT TO CHAR  SYSDATE   INTERVAL  3 01  DAY TO HOUR    DD-MON-YYYY HH24 MI SS          FROM dual         -- prints date   3 days and 1 hour      22-OCT-2019 22 34 15 SELECT TO CHAR  SYSDATE - INTERVAL  10-3  YEAR TO MONTH    DD-MON-YYYY HH24 MI SS        FROM dual         -- prints date - 10 years and 3 months  19-JUL-2009 21 34 15

[sql] Oracle Add 1 hour in SQL

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