Allow `{table}.{column}` references where `{schema}.{table}.{column}` would error.

[igalklebanov]

Hey 👋

Currently, when decribing the database with {schema}.{table} keys, you can't refer to {table}.{column} alone in the query - which is great in most cases, except for functions that would error when you pass {schema}.{table}.{column} - e.g. array_agg.