> Said this, we can end this thread. Re-think the data model is not an
> option.

Why not ?

        - add a primary key to each table, say db01buch.pk
        - rename tables, say db01buch -> db01buch__real_table
        - add views, say db01buch over db1buch__real_table with "pk AS ctid"

(untested, however)

Karsten
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