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Home -> Community -> Usenet -> comp.databases.theory -> Re: PIZZA time again :-)
On Thu, 01 Sep 2005 23:54:15 +0200, mAsterdam <mAsterdam_at_vrijdag.org>
wrote:
>Assume
>1. there is a meaningful (or at least consequential)
>difference between:
>
> toppings([salami, mozarella, onions]).
> and
> toppings([mozarella, onions, salami]).
>
It can be yes or not, whatever you like
>2. A, B, C are lists (conforming to the as yet to
>be published Spight LIST grammar in relational context).
>
>What should
> merge ([A,B], C). % merge list of lists into list
>mean ?
>
>I think it should merge A and B into C,
>preserving order, and fail if it can't.
>
>Or, if merge(+, +) just fail if C isn't a merge.
It can be both, whatever you like
A.L. Received on Fri Sep 02 2005 - 15:07:35 CDT
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