diff --git a/config/upstream_mirrors.php b/config/upstream_mirrors.php
index b978027e..9d98f91b 100644
--- a/config/upstream_mirrors.php
+++ b/config/upstream_mirrors.php
@@ -422,6 +422,7 @@ return [
             'wide_strings' => true,
             'indexes' => [
                 ['undefined8', 'undefined7'],
+                ['undefined1'],
                 ['undefined2'],
                 ['undefined10'],
             ],
diff --git a/modules/EcommerceFinance/Repositories/GoodsProfitAfsRepository.php b/modules/EcommerceFinance/Repositories/GoodsProfitAfsRepository.php
index 198e4fcc..0106d199 100644
--- a/modules/EcommerceFinance/Repositories/GoodsProfitAfsRepository.php
+++ b/modules/EcommerceFinance/Repositories/GoodsProfitAfsRepository.php
@@ -95,7 +95,7 @@ class GoodsProfitAfsRepository
 
         // 单号查询走各自列的索引，避免 undefined2 OR undefined1 触发全表扫描。
         if ($orderNo !== '') {
-            foreach (['online_order_no', 'internal_order_no'] as $field) {
+            foreach ($this->orderNumberFields($orderNo) as $field) {
                 if (! isset($columns[$field])) {
                     continue;
                 }
@@ -183,7 +183,7 @@ class GoodsProfitAfsRepository
         $records = [];
         $cap = max($limit * 4, 400);
 
-        foreach (['online_order_no', 'internal_order_no'] as $field) {
+        foreach ($this->orderNumberFields($orderNo) as $field) {
             if (! isset($columns[$field])) {
                 continue;
             }
@@ -345,4 +345,17 @@ class GoodsProfitAfsRepository
 
         return trim($label);
     }
+
+    /**
+     * 线上订单号和内部订单号长度差很多（19 位 vs 7~8 位）。长单号只查线上订单号，
+     * 避免用内部订单号列做 `like '长单号%'` 的全表扫描。
+     *
+     * @return list<string>
+     */
+    private function orderNumberFields(string $orderNo): array
+    {
+        return mb_strlen($orderNo) >= 12
+            ? ['online_order_no']
+            : ['online_order_no', 'internal_order_no'];
+    }
 }