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Home -> Community -> Usenet -> comp.databases.theory -> Re: does a table always need a PK?
"Mikito Harakiri" <mikharakiri_at_ywho.com> wrote in message news:Nv85b.19$1o4.1173_at_news.oracle.com...
>
> Since we can express count via sum, where
>
> select count(a + b) from table_t;
>
> becomes
>
> select sum(1) from table_t;
>
> could I suggest that "count" is redundant operator, so that we can drop it
> from consideration altogether?
I like that idea a *lot.*
Marshall Received on Tue Sep 02 2003 - 18:05:34 CDT
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