Re: [libreoffice-users] LO Base - calculating dates

On 01/28/2012 05:42 AM, Mark Stanton wrote:
> I think (without actually having tried it) that just adding numbers
> to a date field will do what you want, so<your date field>+365
> should give you the "year in advance" date
A side note of caution. Not every year has 365 days, so tricks are 
usually used to do things such as add one month or add one year. I 
expect there to be date arithmetic functions available to do this in 
SQL, but, if they are not easily obtained, you use tricks to manually 
extract things such as the day / month / year, add the portions of 
interest, and convert back. You can still get in trouble when moving 
from a leap year to a non-leap year if you try to simply add one year 
and keep all other things the same (because the number of days in one of 
the months may change). That said, for quick and dirty calculations, I 
do things very similar to what you recommend.

--
Andrew Pitonyak
My Macro Document: http://www.pitonyak.org/AndrewMacro.odt
Info:  http://www.pitonyak.org/oo.php


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