Subject | Re: [firebird-support] Re: avoiding duplicates |
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Author | Jason Dodson |
Post date | 2005-07-12T14:34:52Z |
But I CAN select UPPER(Fieldname) as WhateverNameIWant, but I can not
select GiveMeAUniqueNumberForEveryRecord...
Jason
Svein Erling Tysvær wrote:
select GiveMeAUniqueNumberForEveryRecord...
Jason
Svein Erling Tysvær wrote:
> --- In firebird-support@yahoogroups.com, Jason Dodson wrote:
>
>>Anyway, the very term "Normalization" means "the process of removing
>>redundant data from your tables in order to improve storage
>>efficiency, data integrity and scalability". Having an UPPERized
>>field is redundant data. It has no extra value other then it saves
>>you from doing work in your application.
>
>
> Assume a case sensitive collation. Having lots of customers, you want
> to address them with their properly cased name and you cannot simply
> have the first letter with capital letters, because mr Donald McDuck
> would be furious if you wrote Donald Mcduck. Moreover, with a database
> of several million names, you would want to avoid natural searches as
> much as possible. In such situations, I do not consider UPPERcased
> fields much more redundant than primary keys without business meaning
> (i.e. created through generators). UPPERcased fields populated and
> maintained through triggers are in some situations almost vital in
> Firebird.
>
> Just my opinion,
> Set
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