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From: Tom Lane <[email protected]>
To: Alvaro Herrera <[email protected]>
Cc: [email protected]
Cc: Joe Conway <[email protected]>
Subject: Re: Proposal for documenting 8.2 VALUES syntax
Date: Fri, 15 Sep 2006 17:49:38 -0400
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>
	<[email protected]>

Alvaro Herrera <[email protected]> writes:
> ... One likely useful example, if not already covered, is

> select ... FROM ... WHERE op ANY (VALUES ( ... ))

> I tripped over it a couple of days ago and it seems useful and non
> obvious.  ISTM it beats the current practice of 

> op ANY(ARRAY[ ... ])

> which seems a bit of a kludge.

Unfortunately, we don't optimize the former nearly as well as the latter
:-(.  I was thinking of showing an example of a multi-column IN:

where (firstname,lastname) in (values ('joe','blow'), ('anne','smith'), ...

but I don't think we want to encourage people to use it in cases where
a scalar list or ANY(ARRAY) will serve.  Maybe next year ;-)

			regards, tom lane

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