Postgres Pro
Downloads
Home   >   mailing lists

Re: v13 planner ERROR: could not determine which collation to use for string comparison - Mailing list pgsql-hackers

From David G. Johnston
Subject Re: v13 planner ERROR: could not determine which collation to use for string comparison
Date
Msg-id CAKFQuwazqA2snGEOs2uTV7-Mi5gHknNC1OC3ogx-9HHc8u7t2A@mail.gmail.com
Whole thread Raw
In response to v13 planner ERROR: could not determine which collation to use for string comparison  (Justin Pryzby <pryzby@telsasoft.com>)
Responses Re: v13 planner ERROR: could not determine which collation to use for string comparison
List pgsql-hackers
Tree view
On Tuesday, July 21, 2020, Justin Pryzby <pryzby@telsasoft.com> wrote:
We hit this on v13b2 and verified it fails on today's HEAD (ac25e7b039).

explain SELECT 1 FROM sites NATURAL JOIN sectors WHERE sites.config_site_name != sectors.sect_name ;
ERROR:  could not determine which collation to use for string comparison

I can workaround the issue by DELETEing stats for either column.

It's possible we're doing soemthing wrong and I need to revisit docs..but this
was working in v12.

This sounds suspiciously like a side-effect of:


David J.

pgsql-hackers by date:

Previous
From: Justin Pryzby
Date:
Subject: v13 planner ERROR: could not determine which collation to use for string comparison
Next
From: Daniel Gustafsson
Date:
Subject: Re: OpenSSL randomness seeding