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.)
Since capability was insufficient, I spent several times as many time as this.
It understands the very hard thing. Hardship had left traces upon this features.
I want me to still inquire.
Regards,
Hiroshi Saito