What happens?

When using DuckDB v1.1.3 with the Postgres extension (https://duckdb.org/docs/extensions/postgres.html), DuckDB crashes when querying a schema named "main."

I can successfully attach several databases and use the SHOW ALL TABLES; command to view all tables, including those under the schema named "main." However, attempting to execute a query such as SELECT * FROM alias.main.streets; causes DuckDB to crash.
Seems like a schema name conflict?

To Reproduce

INSTALL postgres;
LOAD postgres;

ATTACH 'dbname=db_info user=beaver password=123 host=beavertown.postgresql-dev.com' as postgres_db_info (TYPE POSTGRES);
ATTACH 'dbname=db_main user=beaver password=123 host=beavertown.postgresql-dev.com' as postgres_db_main (TYPE POSTGRES);

SHOW ALL TABLES;
-- this shows all schemas and tables for both databases. 

SELECT * FROM postgres_db_info.info.test; 
-- this query works

SELECT * FROM postgres_db_main.main.test;
--duckdb crashes. 

OS:

Windows

PostgreSQL Version:

16.3

DuckDB Version:

1.1.3

DuckDB Client:

Python

Full Name:

William Vagle

Affiliation:

Fraktal

Have you tried this on the latest main branch?

• I agree

Have you tried the steps to reproduce? Do they include all relevant data and configuration? Does the issue you report still appear there?

• I agree