Bruno Wolff III <bruno(at)wolff(dot)to> writes:
> It should be possible to make this work for bool_and and bool_or as those
> are equivalent to min and max for the boolean type.
This would just be a matter of marking them properly in the catalogs.
However, are they really equivalent in the corner cases? In particular,
I think boolean AND across zero input rows is probably supposed to
return TRUE, not NULL.
regards, tom lane