Moritz Bayer <moritz(dot)bayer(at)googlemail(dot)com> writes:
> I get the following error:
> ERROR: missing .. at end of SQL expression
> I haven't figured out what this message wants to tell me and why it is
> thrown at all.
I think it's telling you that you are using a 7.3 or older server.
Try 7.4 or later --- plpgsql was pretty weak on handling rowtype
variables that far back.
regards, tom lane