Re: Very slow Query compared to Oracle / SQL - Server - Mailing list pgsql-performance

----- Mensagem original -----
> De: "Semen Yefimenko" <semen.yefimenko@gmail.com>
> Para: "pgsql-performance" <pgsql-performance@lists.postgresql.org>
> Enviadas: Quinta-feira, 6 de maio de 2021 11:38:39
> Assunto: Very slow Query compared to Oracle / SQL - Server


> SELECT column1,..., column54 where ((entrytype = 4000 or entrytype = 4001 or
> entrytype = 4002) and (archivestatus <= 1)) order by timestampcol desc;
 

The first thing I would try is rewriting the query to:

SELECT column1,..., column54 
  FROM logtable
 WHERE (entrytype in (4000,4001,4002)) 
   AND (archivestatus <= 1)) 
 ORDER BY timestampcol DESC;

Check if that makes a difference...

Luis R. Weck