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Groups > comp.lang.java.databases > #517

Re: Searching for ranges

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On Tue, 17 Jan 2012 11:59:58 -0800 (PST), David Lee Lambert
<davidl@lmert.com> wrote, quoted or indirectly quoted someone who said
:

>
>> deciding which rule to use for inserting dashes in a ISBN depending on
>> is [?] band.
>
>The rules for this fit on a single page of human-readable text,  I
>don't see how anything involving SQL parsing and a database lookup
>could possibly be more efficient than just implementing them in a
>procedural language.

I was not suggesting that you would use SQL for such code.  I have
implemented in it Java.  See http://mindprod.com/products1.html#ISBN

I was just pointing out that slicing up a range into a number of
abutting bands of variable width is a pattern than shows up in many
different problems where you want to rapidly identify the band.  I was
suggesting there ought to be canned classes or language features in
Java/SQL etc . for dealing with it that hide the housekeeping.
-- 
Roedy Green Canadian Mind Products
http://mindprod.com
One of the most useful comments you can put in a program is 
"If you change this, remember to change ?XXX? too".
 

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Searching for ranges Roedy Green <see_website@mindprod.com.invalid> - 2011-11-21 08:56 -0800
  Re: Searching for ranges Martin Gregorie <martin@address-in-sig.invalid> - 2011-11-21 21:18 +0000
  Re: Searching for ranges David Lee Lambert <davidl@lmert.com> - 2012-01-17 11:59 -0800
    Re: Searching for ranges Roedy Green <see_website@mindprod.com.invalid> - 2012-01-19 09:32 -0800

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