* Tom Lane (tgl@sss.pgh.pa.us) [020402 16:42]:
> Since I'm about to have to edit pg_proc.h to add a namespace column,
> I thought this would be a good time to revise the current proiscachable
> column into the three-way cachability distinction we've discussed
> before. But I need some names for the values, and I'm not satisfied
> with the ideas I've had so far.
Invariant
Cachable
Noncachable