Re: primary key on lower(varchar)

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Тема Re: primary key on lower(varchar)
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Msg-id 20060108071150.27599.qmail@web33302.mail.mud.yahoo.com
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Ответ на Re: primary key on lower(varchar)  (<me@alternize.com>)
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--- me@alternize.com wrote:

>  > I don't really see the use-case for what you want
> anyway.  Why don't
> > you just require the field to be all lower case,
> eg with a CHECK
> > constraint?
>
> simple case: lets say the table "translated_names"
> contains an foreign key,
> the translated word and the language the word is in.
> obviously,
> "Brotaufstrich" and "brotaufstrich" must relate to
> the same record. if i'm
> just saving the records in lowercase (or uppercase)
> i'm loosing the proper
> letter case...
>
> the workaround of adding 2 word fields (word_lower,
> word_normal)  and
> setting word_lower to primary key unfortunately
> wastes a lot of diskspace
> espially when the table grows large...
>
> - thomas

isn't it easier to set up a serial for your primary key?



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