[fix] : flyway 파일 수정 (#291)

Author: No-366

backend/src/main/resources/db/migration/V20251231_02__fix_v2_order_fk_reference.sql

@@ -0,0 +1,32 @@
+/* =========================================================
+ * 1. Drop FK: fk_v2_order_ticket (잘못된 참조 제거)
+ * ========================================================= */
+DO $$
+BEGIN
+    IF EXISTS (
+        SELECT 1
+        FROM pg_constraint
+        WHERE conname = 'fk_v2_order_ticket'
+    ) THEN
+        ALTER TABLE v2_orders
+            DROP CONSTRAINT fk_v2_order_ticket;
+    END IF;
+END $$;
+
+
+/* =========================================================
+ * 2. Foreign Key: v2_orders.ticket_id → tickets.id (올바른 참조)
+ * ========================================================= */
+DO $$
+BEGIN
+    IF NOT EXISTS (
+        SELECT 1
+        FROM pg_constraint
+        WHERE conname = 'fk_v2_order_ticket'
+    ) THEN
+        ALTER TABLE v2_orders
+            ADD CONSTRAINT fk_v2_order_ticket
+            FOREIGN KEY (ticket_id)
+            REFERENCES tickets(id);
+    END IF;
+END $$;