PostgreSQL doesn't support PRIMARY KEY or UNIQUE constraints on
partitioned tables when using RANGE partitioning on expressions
(like EXTRACT(YEAR FROM event_date)).
Changed:
- RAWDATACOR: removed PRIMARY KEY (id, event_date) and UNIQUE constraint
- ELABDATADISP: removed PRIMARY KEY (id_elab_data, event_date) and UNIQUE constraint
- Tables now have no constraints except NOT NULL on required columns
This is a PostgreSQL limitation with partitioned tables.
Constraints can be added per-partition if needed, but for simplicity
we rely on application-level validation.
Fixes: 'vincolo PRIMARY KEY non supportato con una definizione di chiave di partizione'
