From: Andrew Thorley <andrew.thorley@linuxmail.org>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: pgsql-sql @ postgresql . org <pgsql-sql@postgresql.org>
Subject: Re: Type Inheritance
Date: Sat, 27 Nov 2004 22:04:55 +0800
Message-ID: <20041127140455.1324023EF6B@ws5-4.us4.outblaze.com> (raw)
hi tom thanks for reply.
im trying to provide inheritance for data types (domains), not tables. i will look into the syntax associated with domains as data types does not include an inheritance function (or so i think).
regards andy.
----- Original Message -----
From: "Tom Lane" <tgl@sss.pgh.pa.us>
To: "Andrew Thorley" <andrew.thorley@linuxmail.org>
Subject: Re: [SQL] Type Inheritance
Date: Fri, 26 Nov 2004 13:14:07 -0500
>
> "Andrew Thorley" <andrew.thorley@linuxmail.org> writes:
> > Does anyone know how to implement type inheritance in postgresql? in oracle you just use the word UNDER in ur code i.e:
> > CREATE TYPE test2_UDT UNDER test1_UDT AS (abc INT);
>
> If you had said what this *does*, we might be better able to help.
>
> But take a look at CREATE DOMAIN, as well as the INHERITS and LIKE
> options in CREATE TABLE. Some part of that might be close to what
> you are looking for.
>
> regards, tom lane
>
> ---------------------------(end of broadcast)---------------------------
> TIP 9: the planner will ignore your desire to choose an index scan if your
> joining column's datatypes do not match
>
--
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To: pgsql-sql@postgresql.org
Cc: andrew.thorley@linuxmail.org, tgl@sss.pgh.pa.us
Subject: Re: Type Inheritance
In-Reply-To: <20041127140455.1324023EF6B@ws5-4.us4.outblaze.com>
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