From: Peter Wright <pete@flooble.net>
To: pgsql-bugs@lists.postgresql.org
Subject: Unqualified name not resolved in function called from materialized view (17.4)
Date: Tue, 11 Mar 2025 19:45:33 +1100
Message-ID: <Z8_4Lf5EKH4ZDwvg@flooble.net> (raw)
PostgreSQL version: 17.4
Operating system: Ubuntu 24.04, x86_64, kernel 6.8.0-51-generic
Description:
Given a file "break_it.sql" containing this SQL:
SELECT version();
CREATE VIEW things AS SELECT 1 AS id, 'rock' AS thing_name;
CREATE FUNCTION num_things() RETURNS INTEGER AS $$ SELECT COUNT(1) FROM things; $$ LANGUAGE SQL STABLE;
CREATE MATERIALIZED VIEW thing_report AS SELECT num_things() AS number_of_things;
Running the following commands with the environment pointing at a PostgreSQL 17.4 server:
dropdb demo 2> /dev/null ; createdb demo && psql -d demo -f break_it.sql
...produces an error on line 4: relation "things" does not exist.
Full output (indented two spaces):
version
-----------------------------------------------------------------------------------------------------------------------------------
PostgreSQL 17.4 (Ubuntu 17.4-1.pgdg24.04+2) on x86_64-pc-linux-gnu, compiled by gcc (Ubuntu 13.3.0-6ubuntu2~24.04) 13.3.0, 64-bit
(1 row)
CREATE VIEW
CREATE FUNCTION
psql:break_it.sql:4: ERROR: relation "things" does not exist
LINE 1: SELECT COUNT(1) FROM things;
^
QUERY: SELECT COUNT(1) FROM things;
CONTEXT: SQL function "num_things" during inlining
Running the same commands with the environment pointing at a PostgreSQL 16.8
server does *not* report an error (and the materialized view is created):
version
-----------------------------------------------------------------------------------------------------------------------------------
PostgreSQL 16.8 (Ubuntu 16.8-1.pgdg24.04+1) on x86_64-pc-linux-gnu, compiled by gcc (Ubuntu 13.3.0-6ubuntu2~24.04) 13.3.0, 64-bit
(1 row)
CREATE VIEW
CREATE FUNCTION
SELECT 1
Similarly, the same test on PostgreSQL 15.10 does not report an error
(and the materialized view is created):
version
-------------------------------------------------------------------------------------------------------------------------------------
PostgreSQL 15.10 (Ubuntu 15.10-1.pgdg24.04+1) on x86_64-pc-linux-gnu, compiled by gcc (Ubuntu 13.3.0-6ubuntu2~24.04) 13.3.0, 64-bit
(1 row)
CREATE VIEW
CREATE FUNCTION
SELECT 1
But if I change the third line of "break_it.sql" to use the namespace-qualified
name "public.things":
CREATE FUNCTION num_things() RETURNS INTEGER AS $$ SELECT COUNT(1) FROM public.things; $$ LANGUAGE SQL STABLE;
...then it works as expected under 17.4 without any error:
version
-----------------------------------------------------------------------------------------------------------------------------------
PostgreSQL 17.4 (Ubuntu 17.4-1.pgdg24.04+2) on x86_64-pc-linux-gnu, compiled by gcc (Ubuntu 13.3.0-6ubuntu2~24.04) 13.3.0, 64-bit
(1 row)
CREATE VIEW
CREATE FUNCTION
SELECT 1
Pete.
--
"I'm an Igor, thur. We don't athk quethtionth."
"Really? Why not?"
"I don't know, thur. I didn't athk."
-- "Making Money", Terry Pratchett
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To: pgsql-bugs@postgresql.org
Cc: pete@flooble.net, pgsql-bugs@lists.postgresql.org
Subject: Re: Unqualified name not resolved in function called from materialized view (17.4)
In-Reply-To: <Z8_4Lf5EKH4ZDwvg@flooble.net>
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