diff --git a/supabase/migrations/20251112015238_631cd0f1-06a6-4aeb-bc05-b88e8e15ca4c.sql b/supabase/migrations/20251112015238_631cd0f1-06a6-4aeb-bc05-b88e8e15ca4c.sql
new file mode 100644
index 00000000..8c5e9d05
--- /dev/null
+++ b/supabase/migrations/20251112015238_631cd0f1-06a6-4aeb-bc05-b88e8e15ca4c.sql
@@ -0,0 +1,398 @@
+-- Fix analyze_data_completeness: Remove non-existent introduction_year column reference
+-- The ride_models table doesn't have an introduction_year column
+
+CREATE OR REPLACE FUNCTION analyze_data_completeness(
+  p_entity_type TEXT DEFAULT NULL,
+  p_min_score NUMERIC DEFAULT NULL,
+  p_max_score NUMERIC DEFAULT NULL,
+  p_missing_category TEXT DEFAULT NULL,
+  p_limit INTEGER DEFAULT 100,
+  p_offset INTEGER DEFAULT 0
+)
+RETURNS JSONB
+LANGUAGE plpgsql
+SECURITY DEFINER
+SET search_path = public
+AS $$
+DECLARE
+  v_result JSONB;
+  v_parks JSONB;
+  v_rides JSONB;
+  v_companies JSONB;
+  v_ride_models JSONB;
+  v_locations JSONB;
+  v_timeline_events JSONB;
+  v_summary JSONB;
+BEGIN
+  -- Parks Analysis (including historical)
+  WITH park_analysis AS (
+    SELECT
+      p.id,
+      p.name,
+      p.slug,
+      'park' as entity_type,
+      p.updated_at,
+      -- Calculate completeness score (weighted)
+      (
+        -- Critical fields (10 points each) = 30 points
+        (CASE WHEN p.park_type IS NOT NULL THEN 10 ELSE 0 END) +
+        (CASE WHEN p.status IS NOT NULL THEN 10 ELSE 0 END) +
+        (CASE WHEN p.location_id IS NOT NULL THEN 10 ELSE 0 END) +
+        
+        -- Important fields (7 points each) = 35 points
+        (CASE WHEN p.description IS NOT NULL AND length(p.description) > 50 THEN 7 ELSE 0 END) +
+        (CASE WHEN p.operator_id IS NOT NULL THEN 7 ELSE 0 END) +
+        (CASE WHEN p.banner_image_id IS NOT NULL THEN 7 ELSE 0 END) +
+        (CASE WHEN p.card_image_id IS NOT NULL THEN 7 ELSE 0 END) +
+        (CASE WHEN p.property_owner_id IS NOT NULL THEN 7 ELSE 0 END) +
+        
+        -- Valuable fields (5 points each) = 20 points
+        (CASE WHEN p.opening_date IS NOT NULL THEN 5 ELSE 0 END) +
+        (CASE WHEN p.opening_date_precision IS NOT NULL THEN 5 ELSE 0 END) +
+        (CASE WHEN p.website_url IS NOT NULL THEN 5 ELSE 0 END) +
+        (CASE WHEN p.phone IS NOT NULL THEN 5 ELSE 0 END) +
+        
+        -- Supplementary fields (3 points each) = 9 points
+        (CASE WHEN p.email IS NOT NULL THEN 3 ELSE 0 END) +
+        (CASE WHEN p.closing_date IS NOT NULL AND p.status = 'closed' THEN 3 ELSE 0 END) +
+        (CASE WHEN EXISTS(SELECT 1 FROM entity_timeline_events WHERE entity_id = p.id AND entity_type = 'park') THEN 3 ELSE 0 END) +
+        
+        -- Nice-to-have fields (1 point each) = 6 points
+        (CASE WHEN EXISTS(SELECT 1 FROM locations WHERE id = p.location_id AND latitude IS NOT NULL AND longitude IS NOT NULL) THEN 1 ELSE 0 END) +
+        (CASE WHEN p.closing_date_precision IS NOT NULL AND p.status = 'closed' THEN 1 ELSE 0 END)
+      )::NUMERIC / 100.0 * 100 as completeness_score,
+      
+      -- Missing fields tracking (using helper function)
+      jsonb_build_object(
+        'critical', filter_jsonb_array_nulls(jsonb_build_array(
+          CASE WHEN p.park_type IS NULL THEN 'park_type' END,
+          CASE WHEN p.status IS NULL THEN 'status' END,
+          CASE WHEN p.location_id IS NULL THEN 'location_id' END
+        )),
+        'important', filter_jsonb_array_nulls(jsonb_build_array(
+          CASE WHEN p.description IS NULL OR length(p.description) <= 50 THEN 'description' END,
+          CASE WHEN p.operator_id IS NULL THEN 'operator_id' END,
+          CASE WHEN p.banner_image_id IS NULL THEN 'banner_image' END,
+          CASE WHEN p.card_image_id IS NULL THEN 'card_image' END,
+          CASE WHEN p.property_owner_id IS NULL THEN 'property_owner_id' END
+        )),
+        'valuable', filter_jsonb_array_nulls(jsonb_build_array(
+          CASE WHEN p.opening_date IS NULL THEN 'opening_date' END,
+          CASE WHEN p.opening_date_precision IS NULL THEN 'opening_date_precision' END,
+          CASE WHEN p.website_url IS NULL THEN 'website_url' END,
+          CASE WHEN p.phone IS NULL THEN 'phone' END
+        )),
+        'supplementary', filter_jsonb_array_nulls(jsonb_build_array(
+          CASE WHEN p.email IS NULL THEN 'email' END,
+          CASE WHEN p.closing_date IS NULL AND p.status = 'closed' THEN 'closing_date' END
+        ))
+      ) as missing_fields
+    FROM parks p
+    WHERE (p_entity_type IS NULL OR p_entity_type = 'park')
+  )
+  SELECT jsonb_agg(
+    jsonb_build_object(
+      'id', id,
+      'name', name,
+      'slug', slug,
+      'entity_type', entity_type,
+      'updated_at', updated_at,
+      'completeness_score', completeness_score,
+      'missing_fields', missing_fields
+    ) ORDER BY completeness_score ASC, name ASC
+  )
+  INTO v_parks
+  FROM park_analysis
+  WHERE (p_min_score IS NULL OR completeness_score >= p_min_score)
+    AND (p_max_score IS NULL OR completeness_score <= p_max_score)
+  LIMIT p_limit OFFSET p_offset;
+
+  -- Rides Analysis
+  WITH ride_analysis AS (
+    SELECT
+      r.id,
+      r.name,
+      r.slug,
+      'ride' as entity_type,
+      r.updated_at,
+      -- Calculate completeness score (weighted)
+      (
+        -- Critical fields (10 points each) = 30 points
+        (CASE WHEN r.park_id IS NOT NULL THEN 10 ELSE 0 END) +
+        (CASE WHEN r.category IS NOT NULL THEN 10 ELSE 0 END) +
+        (CASE WHEN r.status IS NOT NULL THEN 10 ELSE 0 END) +
+        
+        -- Important fields (7 points each) = 42 points
+        (CASE WHEN r.description IS NOT NULL AND length(r.description) > 50 THEN 7 ELSE 0 END) +
+        (CASE WHEN r.manufacturer_id IS NOT NULL THEN 7 ELSE 0 END) +
+        (CASE WHEN r.banner_image_id IS NOT NULL THEN 7 ELSE 0 END) +
+        (CASE WHEN r.card_image_id IS NOT NULL THEN 7 ELSE 0 END) +
+        (CASE WHEN r.ride_model_id IS NOT NULL THEN 7 ELSE 0 END) +
+        (CASE WHEN r.designer_id IS NOT NULL THEN 7 ELSE 0 END) +
+        
+        -- Valuable fields (5 points each) = 15 points
+        (CASE WHEN r.opening_date IS NOT NULL THEN 5 ELSE 0 END) +
+        (CASE WHEN r.opening_date_precision IS NOT NULL THEN 5 ELSE 0 END) +
+        (CASE WHEN r.ride_sub_type IS NOT NULL THEN 5 ELSE 0 END) +
+        
+        -- Category-specific technical data (5 points each) = up to 10 points
+        (CASE 
+          WHEN r.category = 'Roller Coaster' THEN
+            (CASE WHEN r.coaster_type IS NOT NULL THEN 5 ELSE 0 END) +
+            (CASE WHEN r.max_speed_kmh IS NOT NULL THEN 5 ELSE 0 END)
+          WHEN r.category = 'Water Ride' THEN
+            (CASE WHEN r.flume_type IS NOT NULL THEN 5 ELSE 0 END) +
+            (CASE WHEN r.wetness_level IS NOT NULL THEN 5 ELSE 0 END)
+          WHEN r.category = 'Dark Ride' THEN
+            (CASE WHEN r.theme_name IS NOT NULL THEN 5 ELSE 0 END) +
+            (CASE WHEN r.ride_system IS NOT NULL THEN 5 ELSE 0 END)
+          ELSE 0
+        END) +
+        
+        -- Supplementary fields (3 points each) = 9 points
+        (CASE WHEN r.max_height_meters IS NOT NULL THEN 3 ELSE 0 END) +
+        (CASE WHEN r.length_meters IS NOT NULL THEN 3 ELSE 0 END) +
+        (CASE WHEN r.capacity_per_hour IS NOT NULL THEN 3 ELSE 0 END)
+      )::NUMERIC / 100.0 * 100 as completeness_score,
+      
+      -- Missing fields tracking (using helper function)
+      jsonb_build_object(
+        'critical', filter_jsonb_array_nulls(jsonb_build_array(
+          CASE WHEN r.park_id IS NULL THEN 'park_id' END,
+          CASE WHEN r.category IS NULL THEN 'category' END,
+          CASE WHEN r.status IS NULL THEN 'status' END
+        )),
+        'important', filter_jsonb_array_nulls(jsonb_build_array(
+          CASE WHEN r.description IS NULL OR length(r.description) <= 50 THEN 'description' END,
+          CASE WHEN r.manufacturer_id IS NULL THEN 'manufacturer_id' END,
+          CASE WHEN r.banner_image_id IS NULL THEN 'banner_image' END,
+          CASE WHEN r.card_image_id IS NULL THEN 'card_image' END,
+          CASE WHEN r.ride_model_id IS NULL THEN 'ride_model_id' END,
+          CASE WHEN r.designer_id IS NULL THEN 'designer_id' END
+        )),
+        'valuable', filter_jsonb_array_nulls(jsonb_build_array(
+          CASE WHEN r.opening_date IS NULL THEN 'opening_date' END,
+          CASE WHEN r.opening_date_precision IS NULL THEN 'opening_date_precision' END,
+          CASE WHEN r.ride_sub_type IS NULL THEN 'ride_sub_type' END
+        ))
+      ) as missing_fields
+    FROM rides r
+    WHERE (p_entity_type IS NULL OR p_entity_type = 'ride')
+  )
+  SELECT jsonb_agg(
+    jsonb_build_object(
+      'id', id,
+      'name', name,
+      'slug', slug,
+      'entity_type', entity_type,
+      'updated_at', updated_at,
+      'completeness_score', completeness_score,
+      'missing_fields', missing_fields
+    ) ORDER BY completeness_score ASC, name ASC
+  )
+  INTO v_rides
+  FROM ride_analysis
+  WHERE (p_min_score IS NULL OR completeness_score >= p_min_score)
+    AND (p_max_score IS NULL OR completeness_score <= p_max_score)
+  LIMIT p_limit OFFSET p_offset;
+
+  -- Companies Analysis
+  WITH company_analysis AS (
+    SELECT
+      c.id,
+      c.name,
+      c.slug,
+      'company' as entity_type,
+      c.updated_at,
+      -- Calculate completeness score (weighted)
+      (
+        -- Critical fields (10 points each) = 20 points
+        (CASE WHEN c.company_type IS NOT NULL THEN 10 ELSE 0 END) +
+        (CASE WHEN c.person_type IS NOT NULL THEN 10 ELSE 0 END) +
+        
+        -- Important fields (7 points each) = 28 points
+        (CASE WHEN c.description IS NOT NULL AND length(c.description) > 50 THEN 7 ELSE 0 END) +
+        (CASE WHEN c.logo_url IS NOT NULL THEN 7 ELSE 0 END) +
+        (CASE WHEN c.banner_image_id IS NOT NULL THEN 7 ELSE 0 END) +
+        (CASE WHEN c.card_image_id IS NOT NULL THEN 7 ELSE 0 END) +
+        
+        -- Valuable fields (5 points each) = 20 points
+        (CASE WHEN c.founded_year IS NOT NULL THEN 5 ELSE 0 END) +
+        (CASE WHEN c.founded_date IS NOT NULL THEN 5 ELSE 0 END) +
+        (CASE WHEN c.website_url IS NOT NULL THEN 5 ELSE 0 END) +
+        (CASE WHEN c.headquarters_location IS NOT NULL THEN 5 ELSE 0 END) +
+        
+        -- Supplementary fields (3 points each) = 6 points
+        (CASE WHEN c.founded_date_precision IS NOT NULL THEN 3 ELSE 0 END) +
+        (CASE WHEN c.company_type IN ('manufacturer', 'operator') AND EXISTS(SELECT 1 FROM parks WHERE operator_id = c.id OR property_owner_id = c.id LIMIT 1) THEN 3 ELSE 0 END)
+      )::NUMERIC / 100.0 * 100 as completeness_score,
+      
+      -- Missing fields tracking (using helper function)
+      jsonb_build_object(
+        'critical', filter_jsonb_array_nulls(jsonb_build_array(
+          CASE WHEN c.company_type IS NULL THEN 'company_type' END,
+          CASE WHEN c.person_type IS NULL THEN 'person_type' END
+        )),
+        'important', filter_jsonb_array_nulls(jsonb_build_array(
+          CASE WHEN c.description IS NULL OR length(c.description) <= 50 THEN 'description' END,
+          CASE WHEN c.logo_url IS NULL THEN 'logo_url' END,
+          CASE WHEN c.banner_image_id IS NULL THEN 'banner_image' END,
+          CASE WHEN c.card_image_id IS NULL THEN 'card_image' END
+        )),
+        'valuable', filter_jsonb_array_nulls(jsonb_build_array(
+          CASE WHEN c.founded_year IS NULL THEN 'founded_year' END,
+          CASE WHEN c.founded_date IS NULL THEN 'founded_date' END,
+          CASE WHEN c.website_url IS NULL THEN 'website_url' END,
+          CASE WHEN c.headquarters_location IS NULL THEN 'headquarters_location' END
+        ))
+      ) as missing_fields
+    FROM companies c
+    WHERE (p_entity_type IS NULL OR p_entity_type = 'company')
+  )
+  SELECT jsonb_agg(
+    jsonb_build_object(
+      'id', id,
+      'name', name,
+      'slug', slug,
+      'entity_type', entity_type,
+      'updated_at', updated_at,
+      'completeness_score', completeness_score,
+      'missing_fields', missing_fields
+    ) ORDER BY completeness_score ASC, name ASC
+  )
+  INTO v_companies
+  FROM company_analysis
+  WHERE (p_min_score IS NULL OR completeness_score >= p_min_score)
+    AND (p_max_score IS NULL OR completeness_score <= p_max_score)
+  LIMIT p_limit OFFSET p_offset;
+
+  -- Ride Models Analysis - FIXED: Removed introduction_year references (lines 306, 322)
+  -- Total points reduced from 70 to 65 (removed 5 points from introduction_year)
+  WITH model_analysis AS (
+    SELECT
+      rm.id,
+      rm.name,
+      rm.slug,
+      'ride_model' as entity_type,
+      rm.updated_at,
+      -- Calculate completeness score (weighted)
+      (
+        -- Critical fields (10 points each) = 30 points
+        (CASE WHEN rm.manufacturer_id IS NOT NULL THEN 10 ELSE 0 END) +
+        (CASE WHEN rm.category IS NOT NULL THEN 10 ELSE 0 END) +
+        (CASE WHEN rm.ride_type IS NOT NULL THEN 10 ELSE 0 END) +
+        
+        -- Important fields (7 points each) = 21 points
+        (CASE WHEN rm.description IS NOT NULL AND length(rm.description) > 50 THEN 7 ELSE 0 END) +
+        (CASE WHEN rm.banner_image_id IS NOT NULL THEN 7 ELSE 0 END) +
+        (CASE WHEN rm.card_image_id IS NOT NULL THEN 7 ELSE 0 END) +
+        
+        -- Valuable fields (5 points each) = 5 points
+        -- REMOVED: introduction_year check (was 5 points)
+        (CASE WHEN EXISTS(SELECT 1 FROM rides WHERE ride_model_id = rm.id LIMIT 1) THEN 5 ELSE 0 END)
+      )::NUMERIC / 100.0 * 100 as completeness_score,
+      
+      -- Missing fields tracking (using helper function)
+      jsonb_build_object(
+        'critical', filter_jsonb_array_nulls(jsonb_build_array(
+          CASE WHEN rm.manufacturer_id IS NULL THEN 'manufacturer_id' END,
+          CASE WHEN rm.category IS NULL THEN 'category' END,
+          CASE WHEN rm.ride_type IS NULL THEN 'ride_type' END
+        )),
+        'important', filter_jsonb_array_nulls(jsonb_build_array(
+          CASE WHEN rm.description IS NULL OR length(rm.description) <= 50 THEN 'description' END,
+          CASE WHEN rm.banner_image_id IS NULL THEN 'banner_image' END,
+          CASE WHEN rm.card_image_id IS NULL THEN 'card_image' END
+        )),
+        'valuable', filter_jsonb_array_nulls(jsonb_build_array(
+          -- REMOVED: introduction_year from missing fields tracking
+        ))
+      ) as missing_fields
+    FROM ride_models rm
+    WHERE (p_entity_type IS NULL OR p_entity_type = 'ride_model')
+  )
+  SELECT jsonb_agg(
+    jsonb_build_object(
+      'id', id,
+      'name', name,
+      'slug', slug,
+      'entity_type', entity_type,
+      'updated_at', updated_at,
+      'completeness_score', completeness_score,
+      'missing_fields', missing_fields
+    ) ORDER BY completeness_score ASC, name ASC
+  )
+  INTO v_ride_models
+  FROM model_analysis
+  WHERE (p_min_score IS NULL OR completeness_score >= p_min_score)
+    AND (p_max_score IS NULL OR completeness_score <= p_max_score)
+  LIMIT p_limit OFFSET p_offset;
+
+  -- Generate Summary
+  v_summary := jsonb_build_object(
+    'total_entities', (
+      SELECT COUNT(*)::INTEGER FROM (
+        SELECT id FROM parks WHERE (p_entity_type IS NULL OR p_entity_type = 'park')
+        UNION ALL
+        SELECT id FROM rides WHERE (p_entity_type IS NULL OR p_entity_type = 'ride')
+        UNION ALL
+        SELECT id FROM companies WHERE (p_entity_type IS NULL OR p_entity_type = 'company')
+        UNION ALL
+        SELECT id FROM ride_models WHERE (p_entity_type IS NULL OR p_entity_type = 'ride_model')
+      ) all_entities
+    ),
+    'avg_completeness_score', (
+      SELECT ROUND(AVG(score)::NUMERIC, 2) FROM (
+        SELECT ((10 + 10 + 10)::NUMERIC / 100.0 * 100) as score FROM parks WHERE park_type IS NOT NULL AND status IS NOT NULL AND location_id IS NOT NULL
+        UNION ALL
+        SELECT ((10 + 10 + 10)::NUMERIC / 100.0 * 100) as score FROM rides WHERE park_id IS NOT NULL AND category IS NOT NULL AND status IS NOT NULL
+        UNION ALL
+        SELECT ((10 + 10)::NUMERIC / 100.0 * 100) as score FROM companies WHERE company_type IS NOT NULL AND person_type IS NOT NULL
+        UNION ALL
+        SELECT ((10 + 10 + 10)::NUMERIC / 100.0 * 100) as score FROM ride_models WHERE manufacturer_id IS NOT NULL AND category IS NOT NULL AND ride_type IS NOT NULL
+      ) scores
+    ),
+    'entities_below_50', (
+      SELECT COUNT(*)::INTEGER FROM (
+        SELECT id FROM parks WHERE (p_entity_type IS NULL OR p_entity_type = 'park')
+        UNION ALL
+        SELECT id FROM rides WHERE (p_entity_type IS NULL OR p_entity_type = 'ride')
+        UNION ALL
+        SELECT id FROM companies WHERE (p_entity_type IS NULL OR p_entity_type = 'company')
+        UNION ALL
+        SELECT id FROM ride_models WHERE (p_entity_type IS NULL OR p_entity_type = 'ride_model')
+      ) all_entities
+      WHERE id IN (
+        SELECT id FROM parks WHERE description IS NULL OR manufacturer_id IS NULL
+        UNION
+        SELECT id FROM rides WHERE description IS NULL OR manufacturer_id IS NULL
+        UNION
+        SELECT id FROM companies WHERE description IS NULL
+        UNION
+        SELECT id FROM ride_models WHERE description IS NULL
+      )
+    ),
+    'entities_100_complete', 0,
+    'by_entity_type', jsonb_build_object(
+      'parks', (SELECT COUNT(*)::INTEGER FROM parks WHERE (p_entity_type IS NULL OR p_entity_type = 'park')),
+      'rides', (SELECT COUNT(*)::INTEGER FROM rides WHERE (p_entity_type IS NULL OR p_entity_type = 'ride')),
+      'companies', (SELECT COUNT(*)::INTEGER FROM companies WHERE (p_entity_type IS NULL OR p_entity_type = 'company')),
+      'ride_models', (SELECT COUNT(*)::INTEGER FROM ride_models WHERE (p_entity_type IS NULL OR p_entity_type = 'ride_model'))
+    )
+  );
+
+  -- Build final result
+  v_result := jsonb_build_object(
+    'summary', v_summary,
+    'entities', jsonb_build_object(
+      'parks', COALESCE(v_parks, '[]'::jsonb),
+      'rides', COALESCE(v_rides, '[]'::jsonb),
+      'companies', COALESCE(v_companies, '[]'::jsonb),
+      'ride_models', COALESCE(v_ride_models, '[]'::jsonb)
+    ),
+    'generated_at', now()
+  );
+
+  RETURN v_result;
+END;
+$$;
\ No newline at end of file