On Mon, Jan 13, 2020 at 08:29:05AM -0800, Shira Bezalel wrote:
> Here is the EXPLAIN (ANALYZE ON, BUFFERS ON) output from both systems:
>
> 9.6 plan <https://explain.depesz.com/s/W8HN>
> 12.1 plan <https://explain.depesz.com/s/lIRS>
> Is there something that was changed/improved in either 10, 11 or 12 that this
> behavior can be attributed to?
v12 has JIT enabled by default.
You can test if that's significant with SET jit=off.