Re: R: [GENERAL] Postgres 9.6.1 big slowdown by upgrading 8.4.22

Job <Job@colliniconsulting.it> writes:
> Hi, here it is, excuse me for the delay:
> ...
>  Execution time: 0.510 ms

You're still not showing us the actual problem query (the one with
EXISTS in it).  Nor have you yet shown us any table schemas.

*Please* go read the Slow_Query_Questions wiki page.  You're wasting
your time as well as the time of people who are trying to help you
by ignoring that advice about the information we need.

            regards, tom lane