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Re: simple query help

From: fumi <fumi_at_tpts5.seed.net.tw>
Date: 6 Jan 2000 15:29:02 GMT
Message-ID: <852cbu$j9k$2@news.seed.net.tw> 






Alan Shein <alanshein_at_erols.com> wrote in message news:84t8hv$657$1_at_bob.news.rcn.net...


> Yes.


>


> a.dept(+) = b.dept


>


> or


>


>   a.dept = b.dept(+)


>


> depending on what you want...






No.


You can not predicate which side is "larger".
And more, you can not assume A is a superset of B, nor B is a superset of A.



Take look at a quick example:



dept dude status


==== ==== ======


north, bob, i,


east, mary, a,






Received on Thu Jan 06 2000 - 09:29:02 CST












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