> One small objection is that we'd lose the ability to separately display
> the time spent building the hash table in EXPLAIN ANALYZE output. It's
> probably not super important, but might be a reason to keep two plan
> nodes in the tree.
Would a separate hash node help for these kinds of queries in the future:
SELECT * FROM table WHERE id IN (1,2,3,4,...massive list of scalars, ...);
Chris