How can I get the number of days between 2 dates in Oracle 11g

Question

I m trying to find an integer number of days between two dates in Oracle 11g     I can get close by doing   select sysdate - to date  2009-10-01    yyyy-mm-dd   from dual   but this returns an interval  and I haven t been successful casting this to an integer   Edit  Apparently in 10g  this returns the number of days as an integer

User · Answer

You can try using   select trunc sysdate - to date  2009-10-01    yyyy-mm-dd    as days from dual

User · Answer

Full days between end of month and start of today  including the last day of the month   SELECT LAST DAY  TRUNC SysDate   - TRUNC SysDate    1 FROM dual  Days between using exact time   SELECT SysDate - TO DATE  2018-01-01   YYYY-MM-DD   FROM dual

User · Answer

I figured it out myself   I need   select extract day from sysdate - to date  2009-10-01    yyyy-mm-dd    from dual

User · Answer

Or you could have done this   select trunc sysdate  - to date  2009-10-01    yyyy-mm-dd   from dual   This returns a NUMBER of whole days   SQL gt  create view v as    2  select trunc sysdate  - to date  2009-10-01    yyyy-mm-dd   diff    3  from dual   View created   SQL gt  select   from v         DIFF ----------         29  SQL gt  desc v  Name                   Null     Type  ---------------------- -------- ------------------------  DIFF                            NUMBER 38

User · Answer

This will work i have tested myself  It gives difference between sysdate and date fetched from column admitdate    TABLE SCHEMA      CREATE TABLE  ADMIN   DUESTESTING               TOTAL  NUMBER   0     DUES  NUMBER   0     ADMITDATE  TIMESTAMP  6     DISCHARGEDATE  TIMESTAMP  6         EXAMPLE  select TO NUMBER trunc sysdate  - to date to char admitdate   yyyy-mm-dd    yyyy-mm-dd    from admin duestesting where total 300

[sql] How can I get the number of days between 2 dates in Oracle 11g?

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