Re: views of binary operations

From: Bob Badour <bbadour_at_pei.sympatico.ca>
Date: Sun, 16 Jul 2006 17:46:46 GMT
Message-ID: <aYuug.11273$pu3.258450_at_ursa-nb00s0.nbnet.nb.ca>

Marshall wrote:

> Aloha Kakuikanu wrote:
> 

>>Marshall wrote:
>>
>>>Consider named views of binary operations on relations.
>>>
>>>Given a relational operator "op" and relation variables A and B,
>>>and a declaration of:
>>>
>>>r = A op B
>>>
>>>the language evaluates the expression "A op B" and assigns the
>>>result to r.
>>>
>>>However, if we declare this as a view, ...
>>
>>View is a named expression. r is a view.
>
> Is it necessarily named? Might we find use for an anonymous view?

While the SQL folks confuse things per usual, a nested expression is just a nested expression. Why do we need another name for that? Received on Sun Jul 16 2006 - 19:46:46 CEST