Re: Reducing duplicativeness of EquivalenceClass-derived clauses

Zhang Mingli <zmlpostgres@gmail.com> writes:
> How about combine ec->ec_sources and ec->derives as one list for less codes?

Keeping them separate is required for the broken-EC code paths.
Even if it weren't, I wouldn't merge them just to save a couple
of lines of code --- I think it's useful to be able to tell which
clauses the EC started from.

            regards, tom lane