Recently I tried to move a PostgreSQL database to another server and wanted
to upgrade from 7.2.2 to 7.3.2 during the process.

However when I tried to restore the data created with pg_dumpall on the new
machine, I got several error messages complaining that the function with the
correct argument types does not exist.

I checked with the \df command on the old machine, where both instances of
the function were indeed defined. The dump however contained only one of the
function definitions.

- Gregor Kuhlmann