销售订单 显示退货数 returnsNumber

src/views/tirePartsMall/salesManagement/saleOrder/index.vue

@@ -214,6 +214,9 @@ export default {
         }, {
           name: 'totalMoney',
           type: 'sum',
+        }, {
+            name: 'returnsNumber',
+            type: 'sum',
         }],
         column: [{
           label: '销售单号',