I wrote:
> The problem here is that in the output of the grammar, * is represented
> exactly the same as "*" would be ... I suppose this representation was
> chosen back in the day before we had full support for quoted column
> names.
I took a brief look at this. Changing that representation seems like
it'd be a fairly simple exercise, but I don't want to get into doing it
before 8.3 beta, and it'd be too invasive for a back-patch anyway. What
I propose for the moment is to replace the Assert with a plain elog:
if (!targetlist) elog(ERROR, "invalid use of *");
Thoughts?
regards, tom lane