From: Walter Hurry <walterhurry@lavabit.com>
To: pgsql-admin@postgresql.org
Subject: Re: Is it possible to create a CHECK constraint for my use case?
Date: Wed, 1 Feb 2012 01:04:58 +0000 (UTC)
Message-ID: <jga33q$vpb$1@dough.gmane.org> (raw)
References: <006c01ccdfef$e0396f60$a0ac4e20$@com>
On Tue, 31 Jan 2012 13:41:00 +0530, Gnanakumar wrote:
> Hi,
>
> Our Production server is running PostgreSQL v8.2.22 on CentOS5.2. We
> want to enable a specific CHECK constraint for our application table as
> explained below:
>
> There are 2 columns in the table: "managertype" numeric(1) and
> "managerid" numeric(10). "managertype" accepts only 2 valid values,
> either '1' or '2'.
>
> managertype | managerid ---------------------------------
> 1 | null values NOT allowed 2 | null values
> allowed
> ---------------------------------
>
> We want to enable a CHECK constraint based on 2 columns data in the
> table in such a way that if "managertype" is 1, then null values are not
> allowed in "managerid" column. In other words, I want to create a CHECK
> constraint something like this: IF (managertype = 1) THEN managerid IS
> NOT NULL.
>
> Is it possible to create a CHECK constraint for my use case explained
> above?
Production server? Bollocks. It's homework. Look it up.
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To: pgsql-admin@postgresql.org
Cc: walterhurry@lavabit.com
Subject: Re: Is it possible to create a CHECK constraint for my use case?
In-Reply-To: <jga33q$vpb$1@dough.gmane.org>
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