Comments on: How to add years, months and days to a date http://oraqa.com/2007/06/28/how-to-add-years-months-and-days-to-a-date/ Oracle Question and Answer Mon, 19 Dec 2011 14:21:07 -0700 http://wordpress.org/?v=2.8.4 hourly 1 By: Eddie Awad http://oraqa.com/2007/06/28/how-to-add-years-months-and-days-to-a-date/comment-page-1/#comment-211 Eddie Awad Wed, 18 Jul 2007 03:29:24 +0000 http://oraqa.com/2007/06/28/how-to-add-years-months-and-days-to-a-date/#comment-211 Thanks for the tip Laurent. Thanks for the tip Laurent.

]]> By: Laurent Schneider http://oraqa.com/2007/06/28/how-to-add-years-months-and-days-to-a-date/comment-page-1/#comment-210 Laurent Schneider Tue, 17 Jul 2007 09:22:03 +0000 http://oraqa.com/2007/06/28/how-to-add-years-months-and-days-to-a-date/#comment-210 make sure you know what you want to do with variable months what does adding one month to 30 june means? what does adding 18 years to 29 february means? adding y2m interval often leads to <pre> SQL> select date '2007-07-31' - interval '00-01' year to month from dual select date '2007-07-31' - interval '00-01' year to month from dual * Error at line 0 ORA-01839: date not valid for month specified </pre> make sure you know what you want to do with variable months

what does adding one month to 30 june means?

what does adding 18 years to 29 february means?

adding y2m interval often leads to 

SQL> select date '2007-07-31' - interval '00-01' year to month from dual
select date '2007-07-31' - interval '00-01' year to month from dual
*
Error at line 0
ORA-01839: date not valid for month specified
]]>