| From: | Bruce Momjian <bruce(at)momjian(dot)us> |
|---|---|
| To: | Darren Duncan <darren(at)darrenduncan(dot)net> |
| Cc: | Merlin Moncure <mmoncure(at)gmail(dot)com>, Andrew Dunstan <andrew(at)dunslane(dot)net>, Alvaro Herrera <alvherre(at)commandprompt(dot)com>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: VARIANT / ANYTYPE datatype |
| Date: | 2011-05-10 20:21:36 |
| Message-ID: | 201105102021.p4AKLan00814@momjian.us |
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| Lists: | pgsql-hackers |
Darren Duncan wrote:
> To follow-up, an additional feature that would be useful and resembles union
> types is the variant where you could declare a union type first and then
> separately other types could declare they are a member of the union. I'm
> talking about loosely what mixins or type-roles or interfaces etc are in other
> languages. The most trivial example would be declaring an ENUM-alike first and
> then separately declaring the component values where the latter declare they are
> part of the ENUM, and this could make it easier to add or change ENUM values.
> But keep in mind that this is a distinct concept from what we're otherwise
> talking about as being union types. -- Darren Duncan
Should this be a TODO item?
--
Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://enterprisedb.com
+ It's impossible for everything to be true. +
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