Andrew Chernow <ac@esilo.com> writes:
> Installing it per-conn doesn't get you anything. pqtypes has already
> been linked in. If you use PQexec and PQgetvalue, the pqtypes code
> pretty much does nothing. So, a per-conn install seems redundant. You
> are installing the same function pointers under the same name over and
> over. If you link with, it should just be available.
I don't really agree with that argument; it's not impossible that you'd
want it on some connections and not others. The server version for
instance could affect the choice.
Per-conn install also gets you out of a bunch of thread safety issues
(because we've already decreed that it's the app's problem to ensure
that only one thread touches a PGconn at a time).
regards, tom lane