Hello Jeff,
I have waited a few hours without the query ever finishing which is the reason I said "never finishes".
Especially because the INNER JOIN version finishes within a few minutes while being combinatorial and less efficient.
The query probably only does sequential scans.
You will find the query plan using EXPLAIN here:
- Visual query plan: https://explain.dalibo.com/plan#plan
- Raw query plan: https://explain.dalibo.com/plan#raw
Thanks for your help,
Mickael
On Wed, Apr 27, 2022 at 4:28 PM Jeff Janes <jeff.janes@xxxxxxxxx> wrote:
On Wed, Apr 27, 2022 at 8:19 AM Mickael van der Beek <mickael.van.der.beek@xxxxxxxxx> wrote:The last query does not finish after waiting for more than 15 minutes.
(The temporary view creation is very fast and required due to the same query in a CTE greatly reducing performance (by more than 5 min.) due to the optimisation barrier I'm guessing.)How much over 15 minutes? 20 minutes doesn't seem that long to wait to get a likely definitive answer. But at the least show us the EXPLAIN without ANALYZE of it, that should take no milliseconds.And what does it mean for something to take 5 minutes longer than "never finishes"?(Also, putting every or every other token on a separate line does not make it easier to read)Cheer,Jeff
