fix: Remove unsupported constraints from partitioned tables

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'

src/transformers/schema_transformer.py

@@ -14,7 +14,7 @@ def create_rawdatacor_schema() -> str:
     sql = """
 -- Create RAWDATACOR table with partitioning
 CREATE TABLE IF NOT EXISTS rawdatacor (
-    id BIGSERIAL NOT NULL,
+    id BIGINT NOT NULL,
     unit_name VARCHAR(32),
     tool_name_id VARCHAR(32) NOT NULL,
     node_num INTEGER NOT NULL,
@@ -26,10 +26,12 @@ CREATE TABLE IF NOT EXISTS rawdatacor (
     created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
     bat_level_module NUMERIC(4,2),
     temperature_module NUMERIC(5,2),
-    rssi_module INTEGER,
-    PRIMARY KEY (id, event_date)
+    rssi_module INTEGER
 ) PARTITION BY RANGE (EXTRACT(YEAR FROM event_date));
 
+-- Note: PostgreSQL doesn't support PRIMARY KEY or UNIQUE constraints
+-- with RANGE partitioning on expressions. Constraints are added on partitions.
+
 -- Create partitions for each year
 """
     # Add partition creation statements
@@ -69,7 +71,7 @@ def create_elabdatadisp_schema() -> str:
     sql = """
 -- Create ELABDATADISP table with partitioning
 CREATE TABLE IF NOT EXISTS elabdatadisp (
-    id_elab_data BIGSERIAL NOT NULL,
+    id_elab_data BIGINT NOT NULL,
     unit_name VARCHAR(32),
     tool_name_id VARCHAR(32) NOT NULL,
     node_num INTEGER NOT NULL,
@@ -79,10 +81,12 @@ CREATE TABLE IF NOT EXISTS elabdatadisp (
     calc_err INTEGER DEFAULT 0,
     measurements JSONB,
     created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
-    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
-    PRIMARY KEY (id_elab_data, event_date)
+    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
 ) PARTITION BY RANGE (EXTRACT(YEAR FROM event_date));
 
+-- Note: PostgreSQL doesn't support PRIMARY KEY or UNIQUE constraints
+-- with RANGE partitioning on expressions. Constraints are added on partitions.
+
 -- Create partitions for each year
 """
     # Add partition creation statements