In article <1134926774.703015.67240_at_z14g2000cwz.googlegroups.com>,
boston103_at_hotmail.com says...
>
> Sure, a one-argument predicate like 'is_null', or 'is_odd', talks
> about a property/attribute and can be called an 'adjective'. But the
> 'is_null' predicate cannot help one answer the question "what is '+' in
> '2 + NULL' ?". So, what is '+' in the expression and how does one
> interpret such expression ?
"2 + NULL" isn't a valid expression. (Well, it is in SQL(?), but I don't
think it should be, and I won't try to justify it.)
--
Jon
Received on Mon Dec 19 2005 - 03:39:24 CST
