Thank you everybody. I will be working through these suggestions and
let you know what I come up with.
Ken
I remember this joy of searching names in a system that had 2+ million
customers and names were all varchar() instead of a key to a secondary
table. My indexes sure took a beating when I got another "Williams", the
number one last name in the system, and it had to tear a page to make a new
page in this area.
I found that making a table called NAMES fixed the search time I was
experiencing. Two text boxes had input for whatever they keyed. I added
the % for wildcard after any text in each box and one of the keypress
events was the trigger to run it.
Select <field_list>
from customer
where lNameID in (
select nameID from names
where Name like @Lname)
and
fNameID in (
select nameID from names na
where na.Name like @Fname)
That has been 10-13 years ago.
On Wed, Apr 12, 2017 at 9:55 AM, Ken Dibble <[email protected]> wrote:
> Hi folks,
>
> I've been thinking of how I can improve the ability of my users to find
> people's names in a system that has over 30,000 people in it.
>
> I've looked at soundex, and I've considered munging names to remove
> spaces, apostrophes, hyphens, etc. The thing about those approaches is that
> in order to be efficient, they require pre-processing all of the names in
> the system and storing the results, which can then be queried to find
> matches.
>
> Unfortunately, that would require modifications to the database, which I
> try to avoid due to the downtime they require.
>
> I'm looking for suggestions on how to produce results that include close
> matches on last names that doesn't require pre-processing.
>
> I've played with various schemes to assign "weights" to matches based on
> the number of matching letters, but they all end up being very slooooow and
> also producing too many false positives.
>
> I suppose there are no easy answers, but if anyone has an algorithm for
> this kind of thing that they would be willing to share, I'd be grateful.
>
> Thanks.
>
> Ken Dibble
> www.stic-cil.org
>
>
[excessive quoting removed by server]
_______________________________________________
Post Messages to: [email protected]
Subscription Maintenance: http://mail.leafe.com/mailman/listinfo/profox
OT-free version of this list: http://mail.leafe.com/mailman/listinfo/profoxtech
Searchable Archive: http://leafe.com/archives/search/profox
This message:
http://leafe.com/archives/byMID/profox/E2.1F.03423.4B39FE85@cdptpa-omsmta01
** All postings, unless explicitly stated otherwise, are the opinions of the
author, and do not constitute legal or medical advice. This statement is added
to the messages for those lawyers who are too stupid to see the obvious.
