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Date: Sun, 27 Mar 2005 22:00:50 -0400
From: Alvaro Herrera <alvherre@dcc.uchile.cl>
To: Josh Berkus <josh@agliodbs.com>
Cc: Tom Lane <tgl@sss.pgh.pa.us>, pgsql-docs@postgresql.org
Subject: Re: Missing doc on expression format for ALTER TABLE
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On Sun, Mar 27, 2005 at 05:11:43PM -0800, Josh Berkus wrote:

> > 	ALTER [ COLUMN ] column TYPE type [ USING expression ]
> >
> > Surely you're not expecting it to repeat the complete syntax for
> > <expression>.
> 
> Well, yes, actually.  Where in the documentation is a type conversion 
> expression defined?   Do we use NEW and OLD?  Or the name of the column?  Or 
> something else?

I think the ALTER TABLE page is in dire need of a "See also" section, at
least.  And a reference to where <expression> is defined would be nice
to have.

-- 
Alvaro Herrera (<alvherre[@]dcc.uchile.cl>)
"All rings of power are equal,
But some rings of power are more equal than others."
                                 (George Orwell's The Lord of the Rings)