XPost: comp.databases.oracle.misc, comp.databases.oracle.server   
   From: empty@zero.nil   
      
   Am Fri, 22 Oct 2004 08:33:52 -0500 schrieb Turkbear   
   :   
   > It can get almost metaphysical, but:   
   > Identifying a column which has an undeterminable value ( NULL) is not   
   > the same as identifying that value, so being able to   
   > consider  that column unique ( that is , it is the only one with the   
   > undeterminable value) is not a problem.   
   >   
      
   The difference you point to is clear for me.   
   But i did not find a real world example for   
   a column which is unique in a table and at   
   most one row with a NULL value for this column   
   should be allowed.   
      
   --   
   Frank Piron,   
   etfrankatkonaddotn   
   (leftrotate two)   
      
   --- SoupGate-Win32 v1.05   
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