Re: how to rename an unnamed uniqueness constraint?

From: Oliver Elphick <olly(at)lfix(dot)co(dot)uk>
To: Oliver Kullmann <O(dot)Kullmann(at)swansea(dot)ac(dot)uk>
Cc: pgsql-novice(at)postgresql(dot)org
Subject: Re: how to rename an unnamed uniqueness constraint?
Date: 2005-08-16 22:16:42
Message-ID: 1124230602.12095.99.camel@linda
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-novice

On Tue, 2005-08-16 at 19:01 +0100, Oliver Kullmann wrote:
> I have a table created with
>
> CREATE TABLE Current_academic_year
> (
> year_id INT REFERENCES Academic_years,
> CONSTRAINT year_id CHECK(year_id IS NOT NULL),
> active BOOL NOT NULL,
>
> UNIQUE(year_id),
> UNIQUE(active)
> )
> ;

Since this is the novice list, I will add that that is a round-about way
of declaring the table.

CREATE TABLE current_academic_year
(
year_id INT PRIMARY KEY REFERENCES academic_years,
active BOOLEAN NOT NULL UNIQUE
);
does the same and is easier to read.

Also, your capitalisation of table names won't be preserved, because you
don't double-quote them.

--
Oliver Elphick olly(at)lfix(dot)co(dot)uk
Isle of Wight http://www.lfix.co.uk/oliver
GPG: 1024D/A54310EA 92C8 39E7 280E 3631 3F0E 1EC0 5664 7A2F A543 10EA
========================================
Do you want to know God? http://www.lfix.co.uk/knowing_god.html

In response to

Browse pgsql-novice by date

  From Date Subject
Next Message Leif K-Brooks 2005-08-17 01:01:41 Modifiable sequence column?
Previous Message Oliver Elphick 2005-08-16 22:11:23 Re: how to rename an unnamed uniqueness constraint?