| From: | "Joshua D(dot) Drake" <jd(at)commandprompt(dot)com> |
|---|---|
| To: | "David G(dot) Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com> |
| Cc: | Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>, Elein <elein(at)varlena(dot)com>, GENERAL <pgsql-general(at)postgresql(dot)org> |
| Subject: | Re: enum bug |
| Date: | 2016-03-14 16:07:48 |
| Message-ID: | 56E6E1D4.4090700@commandprompt.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-general |
On 03/14/2016 09:02 AM, David G. Johnston wrote:
> The one nice thing about enums is that you get two concepts in one
> column - a human readable label and a system used ordering.
>
> i.e., "SELECT enum_value FROM tbl ORDER BY enum_value" actually
>
> gives you a meaningful order without having to carry around, or relink
> to, a lookup table to get an ordering column.
>
> Now, this is a bit overrated since you immediately lose that ability if
> you export to a Spreadsheet program, or otherwise lose the ordering
> nature during a convert-to-text operation.
>
I do not suggest that ENUMS are useless just that there are more
flexible and reasonable ways (as a whole) to do what ENUMS provide.
Sincerely,
JD
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