Re: Poor-man's enumeration type

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От Bruce Momjian
Тема Re: Poor-man's enumeration type
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Msg-id 200504260257.j3Q2vvo22189@candle.pha.pa.us
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Ответ на Poor-man's enumeration type  (Keith Worthington <KeithW@NarrowPathInc.com>)
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Keith Worthington wrote:
> Hi All,
>
> I found this in the documentation.
> http://www.postgresql.org/docs/8.0/interactive/datatype-character.html
>
>     The type "char" (note the quotes) is different
>     from char(1)in that it only uses one byte of
>     storage. It is internally used in the system
>     catalogs as a poor-man's enumeration type.
>
> Is this a SQL standard data type?  Can I expect this type
> to be supported in PostgreSQL 'forever'?  I need an enum

Yes.

> type and obviously this works.  At the moment I am not
> faced with an imminent port but I hate to back myself into
> a corner if I do not have to.


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