Re: How to modify ENUM datatypes?

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От Joshua D. Drake
Тема Re: How to modify ENUM datatypes?
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Msg-id 20080422142822.4b247c78@commandprompt.com
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Ответ на Re: How to modify ENUM datatypes?  ("D. Dante Lorenso" <dante@lorenso.com>)
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On Tue, 22 Apr 2008 15:45:39 -0500
"D. Dante Lorenso" <dante@lorenso.com> wrote:


> I was really hoping that it would be more efficient to not have to do
> all the foreign keys and joins for tables that may have 4-5 enum
> types.
>
> Just being able to:
>
>    SELECT *
>    FROM tablename
>
> would be nice if my columns contained enums instead of doing:
>
>    SELECT *
>    FROM tablename, lookuptable
>    WHERE tablename.some_id = lookuptable.some_id
>
> Isn't the join more expensive?

You were using natural keys, the join would not be required.

Joshua D. Drake

>
> -- Dante
>


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