From: PFC <lists@boutiquenumerique.com>
To: Mike Rylander <mrylander@gmail.com>
To: pgsql-sql@postgresql.org
Subject: Re: ENUM like data type
Date: Tue, 28 Jun 2005 18:58:32 +0200
Message-ID: <op.ss3aruu5th1vuj@localhost> (raw)
In-Reply-To: <b918cf3d050628042253044ba@mail.gmail.com>
References: <11bgc1oblfasq3d@corp.supernews.com>
<b918cf3d050628042253044ba@mail.gmail.com>
>> Here is where I get uncertain as to if this is possible. My idea is to
>> create a pseudo type that triggers the creation of it's lookup tables
>> the same way the SERIAL type triggers creation of a sequence and returns
>> an int with the right default value.
Personnally I use one table which has columns (domain, name) and which
stores all enum values for all different enums.
I have then CHECK( is_in_domain( column, 'domain_name' )) which is a
simple function which checks existence of the value in this domain (SELECT
1 FROM domains WHERE domain=$2 AND name=$1 LIMIT 1) for instance.
You can also use integers.
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To: pgsql-hackers@postgresql.org
Cc: lists@boutiquenumerique.com, mrylander@gmail.com, pgsql-sql@postgresql.org
Subject: Re: ENUM like data type
In-Reply-To: <op.ss3aruu5th1vuj@localhost>
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