"Hiroshi Saito" <z-saito@guitar.ocn.ne.jp> writes:
> Oops, and,
>>> so we really need to support at least ColId as the allowed set of
>>> column alias names. (I tried changing the patch to do that, but
>>> got a lot of shift/reduce conflicts, some of which are maybe fixable
>>> but some seem hard to fix.)
I think supporting only IDENT wouldn't be all that much of a loss.
But yeah, c_expr isn't enough. We really need {a,b}_expr sans postfix
expressions. I tried to create something like that earlier and found my bison
grammar foo a bit rusty.
Hm. I wonder if we could do a hack where we parse the a_expr ColId as a
regular a_expr and then check for that in the target_el rule or in parse
analysis and pull the ColId out.
-- Gregory Stark EnterpriseDB http://www.enterprisedb.com Get trained by Bruce Momjian - ask me about
EnterpriseDB'sPostgreSQL training!
