Question

Is there any circumstance where an exception will not be thrown if an insert statement in a stored procedure fails?

I’m using catch-all style exception handling in my PostgreSQL stored procedures via EXCEPTION WHEN OTHERS THEN. I’m wondering if that’s sufficient to catch all failed inserts.

Answer 1

That should cover it.
I quote the manual on Trapping Errors in PL/pgSQL:

The special condition name OTHERS matches every error type except
QUERY_CANCELED. (It is possible, but often unwise, to trap
QUERY_CANCELED by name.)