PL/Perl tries to handle an "undef" result from a Perl function (which
should convert to a SQL NULL) with code like so:
/* XXX is this the approved way to check for an undef result? */ if (perlret == &PL_sv_undef) { retval =
(Datum)0; fcinfo->isnull = true; } else {// handle non-null result }
But I find that it doesn't work, at least not on RH Linux 7.2 with
perl 5.6.0. The if-test fails to notice undef results.
Anyone know what the correct way to do this is?
regards, tom lane
