Alban Hertroys <alban@magproductions.nl> writes:
> Is there a trick to make this work a bit faster?
Have you really shown us the right queries for those explain results?
I don't see where the second plan is testing "dir <> 1" at all.
It looks like the first one is faster because it's using a partial
index that has predicate dir <> 1, while the second one is using
a much larger full index. But I don't see where the second plan
is applying that restriction, so I wonder if you forgot it in the
query.
regards, tom lane