> Thus, for example, int4 to float8 seems like an okay implicit
coercion,
> but not int4 to text.
int4 to text is imho one of the most important implicit coercions of
all.
Still, a field to mark an implicit coercion function is probably a good
thing.
Imho a numeric to text implicit coercion would also be great :-)
I come from a db where all coercions are possible implicitly,
this has not been a problem as long as there is a way to overrule.
Andreas