[Zope-DB] Re: Question on ZSQL and Dates

[Charlie Clark]

On 2002-10-23 at 17:59:41 [+0000], you wrote:
> These things are largely vendor specific but always best done on the
> database level.
> In mySQL I would say:
> 
> select name, id, birthdate, (extract(year from now()) - extract(year
> from birthdate)) as delta from person having delta >=3D 45;
> 
> But before that it is worth thinking about design and choosing proper
> types (date, timestamp, etc). Check out docs.

Yes, I've been coming to the conclusion that it's going to be vendor 
specific. I am currently using MySQL and have discovered the YEAR() functio=
n
but am still having trouble getting the results I want.

I don't know if I'll be able to adopt your method though as I actually need=
 
to get intersects
ie.  40 <=3D (year from now() - year from birthdate) <=3D 45
for Between 40 & 45
although my docs say 40 <=3D YEAR(now()) YEAR(birthdate) without even 
mentioniing now()

It would be so nice to do this in Python :-(

Charlie
-- 
Charlie Clark
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