退款列表快照订单号

migrations/000132_add_order_no_snapshot_to_refund_request.down.sql

@@ -0,0 +1,2 @@
+ALTER TABLE tb_refund_request
+    DROP COLUMN IF EXISTS order_no;

migrations/000132_add_order_no_snapshot_to_refund_request.up.sql

@@ -0,0 +1,13 @@
+-- 为 tb_refund_request 新增订单号快照字段
+-- order_no：创建退款申请时从 tb_order.order_no 复制，避免列表/详情查询联表
+ALTER TABLE tb_refund_request
+    ADD COLUMN IF NOT EXISTS order_no VARCHAR(30) NOT NULL DEFAULT '';
+
+COMMENT ON COLUMN tb_refund_request.order_no IS '关联订单号快照';
+
+-- 存量数据回填：通过 order_id 关联 tb_order 填充订单号快照
+UPDATE tb_refund_request r
+SET order_no = o.order_no
+FROM tb_order o
+WHERE r.order_id = o.id
+  AND (r.order_no IS NULL OR r.order_no = '');