Re: slow query

On Fri, Apr 03, 2020 at 09:03:49AM -0700, dangal wrote:
> Dear I have a question to ask you
> I am having a slow problem with a query and I am seeing with the explain that the current cost and time differ by 4
times

The "cost" is in arbitrary units, and the time is in units of milliseconds.
The cost is not an expected duration.

> Postgres version 9.5.16 in centos 7.6
> To try to solve this run the statistics to the table and the same problem
> remains
> It's a very big table 2 billion tuples
> Do you have any idea what I can do to improve
> Thank you very much for your time
> Any data you need I can provide

Please check here.
https://wiki.postgresql.org/wiki/Slow_Query_Questions

> I share a part of the explain

It's not very useful to see a fragment of it.

-- 
Justin