On 16 Jan 2014, at 3:58pm, Hick Gunter <h...@scigames.at> wrote: > ... = IFNULL(C.c*C.c,0) leads to the lemma: Triangles with sides of all NULL > length are right angled (for some values of NULL).
NULL doesn't have values. It is a refusal to state value. Or, to put it another way: if you don't know the lengths of the sides, it's impossible to prove that the triangle is /not/ right-angled. Simon. _______________________________________________ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
