Re: Change from 9.6 to 11?

Chuck Martin <clmartin(at)theombudsman(dot)com> writes:
> I hope someone here can see something that eludes me. I've recently moved a
> database from PostgreSQL 9.6 to 11, and there are a few oddities. The
> following select statement returns zero rows when it should return one.
> This is one of a small number of records that exist, but are not returned
> by the query. When I include the main table, event, and any one of the
> associated tables, the record is returned, but no record is returned with
> the entire statement. All the primary keys (_pkey) and foreign keys (_fkey)
> are integers. The field I suspect as the possible culprit, event.InsBy, is
> a character column I'm converting to do a lookup on a primary key
> (integer): event.InsBy::int = usr.Usr_pkey. Maybe PG 11 doesn't recognize
> the same syntax for cast as PG 9.6? Or maybe I'm overlooking something else
> basic. Thanks for reading!

Maybe you've found a bug. Can you extract a self-contained case
exhibiting this behavior? Is this 11.0 or 11.1?

regards, tom lane