From: Bruce Momjian <pgman@candle.pha.pa.us>
To: Goran Thyni <goran@kirra.net>
Cc: pgsql-sql@postgreSQL.org
Subject: Re: [SQL] NULL
Date: Mon, 15 Nov 1999 14:23:58 -0500 (EST)
Message-ID: <199911151924.OAA21880@candle.pha.pa.us> (raw)
In-Reply-To: <383059DA.9D2AF70D@kirra.net>
[Charset iso-8859-1 unsupported, filtering to ASCII...]
>
> How about this according to SQL standard:
>
> CREATE TABLE x { y integer NULL };
>
> It suppose to mean that NULLs are explicitly allowed in
> this field.
> Is this required by SQL-92?
If I remember correctly, only NOT NULL is supported by SQL-92. Thomas
talked about adding support for it in some limited cases for 7.0. There
are shift/reduce cases if it were allowed everywhere.
--
Bruce Momjian | http://www.op.net/~candle
maillist@candle.pha.pa.us | (610) 853-3000
+ If your life is a hard drive, | 830 Blythe Avenue
+ Christ can be your backup. | Drexel Hill, Pennsylvania 19026
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To: pgsql-sql@postgresql.org
Cc: pgman@candle.pha.pa.us, goran@kirra.net
Subject: Re: [SQL] NULL
In-Reply-To: <199911151924.OAA21880@candle.pha.pa.us>
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