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The asyncpg dialect only translated integrity, syntax and internal errors to their PEP 249 classes, so a data error or a deadlock came out as a plain DBAPIError. Add one entry per asyncpg SQLSTATE base class to _asyncpg_error_translate with the class psycopg uses for it, and make DatabaseError the fallback for PostgresError. The new test walks asyncpg's exception hierarchy and raises every SQLSTATE through the database. It flags any code that doesn't come out as the expected class. Fixes: sqlalchemy#13636
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Thanks! Issue #13636 is now marked code review in progress and no longer open for pull requests, so this pull request holds the review for it and another one won't land on top of your work. If this pull request is abandoned, a maintainer can put open for pull requests back on #13636 to reopen it to others. |
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Fixes
Fixes: #13636
Description
With asyncpg, every error outside classes 23, 42 and XX came out as a plain
DBAPIError. In this PR, each SQLSTATE class is mapped to the same exception as in psycopg 3 (errors.py#L588-L622), and the fallback isDatabaseErrorinstead ofError.The new test raises every SQLSTATE asyncpg has a class for (252 in 0.32.0) and checks what SQLAlchemy raises. On main 198 of them fail.
Class 10 stays on the fallback because asyncpg only added a class for it in 0.30.0 (asyncpg#1189).
Connect errors use the same mapping, that's why a missing database is
ProgrammingErrorand a wrong password isOperationalError.Tested with asyncpg 0.27, 0.29 and 0.32 on PostgreSQL 17.