change: Initial version of procedures based partitioning.

postgresql/procedures/01_auditlog_prep.sql

@@ -0,0 +1,27 @@
+-- ============================================================================
+-- SCRIPT: 01_auditlog_prep.sql
+-- DESCRIPTION: Modifies the 'auditlog' table Primary Key to include 'clock'.
+--              This is REQUIRED for range partitioning by 'clock'.
+-- ============================================================================
+
+DO $$
+BEGIN
+    -- Check if PK needs modification
+    -- Original PK is typically on (auditid) named 'auditlog_pkey'
+    IF EXISTS (
+        SELECT 1 FROM pg_constraint 
+        WHERE conname = 'auditlog_pkey' 
+        AND conrelid = 'auditlog'::regclass
+    ) THEN
+        -- Verify if 'clock' is already in PK (basic check)
+        -- Realistically, if 'auditlog_pkey' exists on default Zabbix, it's just (auditid).
+        
+        RAISE NOTICE 'Dropping existing Primary Key on auditlog...';
+        ALTER TABLE auditlog DROP CONSTRAINT auditlog_pkey;
+        
+        RAISE NOTICE 'Creating new Primary Key on auditlog (auditid, clock)...';
+        ALTER TABLE auditlog ADD PRIMARY KEY (auditid, clock);
+    ELSE
+        RAISE NOTICE 'Constraint auditlog_pkey not found. Skipping or already modified.';
+    END IF;
+END $$;