Fix: Ambiguous column reference i link_tmodule_customers_to_hub (NOT EXISTS i stedet for NOT IN)

migrations/055_fix_tmodule_customer_linking.sql

@@ -0,0 +1,65 @@
+-- ============================================================================
+-- Migration 055: Fix ambiguous column reference i link_tmodule_customers_to_hub
+-- ============================================================================
+-- Retter SQL fejl hvor tmodule_id var ambiguous i subquery
+-- ============================================================================
+
+DROP FUNCTION IF EXISTS link_tmodule_customers_to_hub();
+
+CREATE OR REPLACE FUNCTION link_tmodule_customers_to_hub()
+RETURNS TABLE (
+    tmodule_id INTEGER,
+    tmodule_name TEXT,
+    hub_id INTEGER,
+    hub_name TEXT,
+    action TEXT
+) AS $$
+BEGIN
+    RETURN QUERY
+    WITH economic_matches AS (
+        -- Prioriter economic_customer_number match (mest præcis)
+        SELECT 
+            tc.id as tmodule_id,
+            tc.name::TEXT as tmodule_name,
+            c.id as hub_id,
+            c.name::TEXT as hub_name,
+            'economic_number_match'::TEXT as action
+        FROM tmodule_customers tc
+        JOIN customers c ON tc.economic_customer_number = c.economic_customer_number
+        WHERE tc.hub_customer_id IS NULL
+          AND tc.economic_customer_number IS NOT NULL
+          AND c.economic_customer_number IS NOT NULL
+    ),
+    name_matches AS (
+        -- Fallback til navn match for kunder uden economic nummer
+        SELECT 
+            tc.id as tmodule_id,
+            tc.name::TEXT as tmodule_name,
+            c.id as hub_id,
+            c.name::TEXT as hub_name,
+            'name_match'::TEXT as action
+        FROM tmodule_customers tc
+        JOIN customers c ON LOWER(TRIM(tc.name)) = LOWER(TRIM(c.name))
+        WHERE tc.hub_customer_id IS NULL
+          AND NOT EXISTS (SELECT 1 FROM economic_matches em WHERE em.tmodule_id = tc.id)
+    ),
+    all_matches AS (
+        SELECT * FROM economic_matches
+        UNION ALL
+        SELECT * FROM name_matches
+    ),
+    updates AS (
+        -- Opdater tmodule_customers med hub_customer_id
+        UPDATE tmodule_customers tc
+        SET hub_customer_id = m.hub_id,
+            updated_at = CURRENT_TIMESTAMP
+        FROM all_matches m
+        WHERE tc.id = m.tmodule_id
+        RETURNING tc.id, tc.name::TEXT, m.hub_id, m.hub_name, m.action
+    )
+    SELECT * FROM updates;
+END;
+$$ LANGUAGE plpgsql;
+
+COMMENT ON FUNCTION link_tmodule_customers_to_hub() IS 
+'Linker tmodule_customers til Hub customers via economic_customer_number (prioritet) eller navn match (fallback). Fixed ambiguous column reference.';