> I've gotten part-way toward implementing a CASE construct...
> ... (but) there is not a corresponding plan or plan tree (not sure
> of the terminology). Any suggestions on where to start, or interest in
> working on it? (hint, hint)
Ah, I've found Bruce's writeup on the query processing dataflow in
tools/backend/index.html.
Looks like a good place to start.
- Tom