Invalid OID Handling in SQLAlchemy with asyncpg and autoload_with Causes DataError

[gtolarc]

Describe the bug

I encountered an issue when using SQLAlchemy with asyncpg and the autoload_with option while trying to load table metadata. The problem occurs because PostgreSQL's oid type is treated as a signed 32-bit integer (int32) by asyncpg, which leads to a DataError when the OID value exceeds the maximum range of int32 (2,147,483,647).

Steps to Reproduce

1. Create a PostgreSQL table with an OID that exceeds the int32 range. For example, an OID like 3195477613.
2. Use SQLAlchemy to define the table with autoload_with to load metadata:

from sqlalchemy import Table, MetaData

metadata = MetaData()
table = Table("master_product_view", metadata, autoload_with=conn)

3. Execute the code.

Observed Behavior

The following exception is raised during metadata loading:

sqlalchemy.exc.DBAPIError: (sqlalchemy.dialects.postgresql.asyncpg.Error) <class 'asyncpg.exceptions.DataError'>: invalid input for query argument $1: 3195477613 (value out of int32 range)

Expected Behavior

The autoload_with option should correctly handle OID values, even if they exceed the int32 range.

asyncpg/SQLAlchemy Version in Use

asyncpg 0.30.0
sqlalchemy 1.4.54

Database Vendor and Major Version

PostgreSQL 14

Python Version

3.13

Operating system

Linux

[elprans]

Hmm. AFAICS OIDs are coded correctly as unisgned int32's, can you post the entire traceback for the error you're getting please?