RE: SQL Question

[Vernon Hamberg <vhamberg@xxxxxxxxxxx>]

This is a great point made here - calculations and function calls can 
be expensive and slow - comparisons are cheap and usually fast. 
Especially if there is an index to support this in order of myyear, 
mymonth, myday. Or EVIs over each one or combination.

At 04:24 PM 10/10/2006, you wrote:

> >Thanks guys. I believe I was overthinking it if you can believe that
>
> Keep in mind, SQL has to bang each row to use that solution. For one-off
> or infrequent hits it's fine, but if you want it to use an index you've
> got to break it up like:
>
> Where myyear>2006 or (myyear=2006 and mymonth > 11) or (myyear=2006 and
> mymonth=11 and myday>12)
>
> If you want anything > 2006-11-12
>
> -Walden
>
> --
> Walden H Leverich III
> Tech Software
> (516) 627-3800 x3051
> WaldenL@xxxxxxxxxxxxxxx
> http://www.TechSoftInc.com
>
> Quiquid latine dictum sit altum viditur.
> (Whatever is said in Latin seems profound.)
>
>
> -----Original Message-----
> From: midrange-l-bounces@xxxxxxxxxxxx
> [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of John Candidi
> Sent: Tuesday, October 10, 2006 4:19 PM
> To: 'Midrange Systems Technical Discussion'
> Subject: RE: SQL Question
>
> Thanks guys. I believe I was overthinking it if you can believe that
>
> -----Original Message-----
> From: midrange-l-bounces@xxxxxxxxxxxx
> [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of rick baird
> Sent: Tuesday, October 10, 2006 2:58 PM
> To: Midrange Systems Technical Discussion
> Subject: Re: SQL Question
>
> where digits(yyyy)||digits(mm)||digits(dd) >= '20061001'
>
> On 10/10/06, John Candidi <jacandidi@xxxxxxxxxxxxxxxxxxxx> wrote:
> > I am trying to pull from a table where the year, month and day are 3
> > separate fields. I want to concatenate them and then select from that
> > same table based on the concatted field. I'm sure this is doable but
> > my
> attempts
> > have been unsuscessful
> >
> >
> >
> > John A Candidi
> >
> > Rutgers Insurance Companies
> >
> > IT Director - Iseries Manager
> >
> > 856-779-2274
> >
> >
> >
> >
> >
> > --
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