On Wed, Jun 1, 2016 at 7:29 AM, Pavel Stehule <pavel.steh...@gmail.com> wrote: > Hi > > When I tested some queries, I found strange plan > > postgres=# explain analyze select s.nazev, o.nazev, o.pocet_obyvatel from > (select nazev, array(select id from obce_pocet_obyvatel where okresy.id = > okres_id order by pocet_obyvatel desc limit 3) as obceids from okresy) s > join obce_pocet_obyvatel o on o.id = ANY(obceids) order by 1, 3 desc;
The EXPLAIN plan you posted certainly looks weird, since I wouldn't expect SubPlan 1 to be displayed twice, but I'm wondering if it's a display artifact rather than an actual defect in the plan. Just out of curiosity, what does the output look like with FORMAT JSON or similar? -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
