Yl Zhou <andrew.ylzhou@gmail.com> writes:
> Do you mean this function? Seems I cannot get much information from it...
That would appear to be Postgres 7.3 :-(
You need a considerably newer version of Postgres if you want to do much
of anything useful with unspecified-type records. 8.0 has most of that
functionality but I think 8.1 added some things.
regards, tom lane