| From: | Teodor Sigaev <teodor(at)sigaev(dot)ru> |
|---|---|
| To: | Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com> |
| Cc: | PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: User defined I/O conversion casts |
| Date: | 2008-08-29 11:50:44 |
| Message-ID: | 48B7E294.4030603@sigaev.ru |
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| Thread: | |
| Lists: | pgsql-hackers |
> Since 8.3, the system provides automatic I/O conversion casts between
> the built-in string types and other types, but there's currently no way
> for a user to declare additional casts using the I/O functions. You can
> always create a simple SQL function to do that, but it seems like we
> should provide a direct interface for that. I propose the syntax:
>
> CREATE CAST (<source> AS <target>) WITH INOUT [AS IMPLICIT | AS ASSIGNMENT]
> Anyone else think this is a good idea? Thoughts on the implementation?
Agree, that task causes too often for me. Although using separate boolean column
looks more preferable than special value for OID.
--
Teodor Sigaev E-mail: teodor(at)sigaev(dot)ru
WWW: http://www.sigaev.ru/
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