diff --git a/zhctproject/store/application/api/service/MarketingStrategy.php b/private/tmp/cdx-ms-candidate-20261010/application/api/service/MarketingStrategy.php
index 40b4023..193777a 100644
--- a/application/api/service/MarketingStrategy.php
+++ b/application/api/service/MarketingStrategy.php
@@ -109,6 +109,7 @@ class MarketingStrategy extends BaseService
         if ($data === false) {
             return false;
         }
+        $data = self::applyDmClock($data, null, ltrim((string)config('database.type'), '\\') === \app\cores\database\Dm::class);
         Db::startTrans();
         try {
             $strategyId = Db::name('marketing_strategy')->insertGetId($data);
@@ -140,6 +141,7 @@ class MarketingStrategy extends BaseService
             return false;
         }

+        $data = self::applyDmClock($data, $strategy, ltrim((string)config('database.type'), '\\') === \app\cores\database\Dm::class);
         Db::startTrans();
         try {
             Db::name('marketing_strategy')
@@ -334,6 +336,36 @@ class MarketingStrategy extends BaseService
         return $query->value('id') ? true : false;
     }

+    /** Keep this table's verified MySQL seconds/default/ON UPDATE semantics only on DM. */
+    private static function applyDmClock(array $data, ?array $original, bool $dm): array
+    {
+        if (!$dm) {
+            return $data;
+        }
+        if ($original === null) {
+            $clock = new \think\db\Expression('CAST(CURRENT_TIMESTAMP AS TIMESTAMP(0))');
+            $data['create_time'] = $clock;
+            $data['update_time'] = $clock;
+            return $data;
+        }
+        $integerFields = ['priority', 'strategy_type', 'is_first_consume_only', 'status', 'effective_type', 'store_id', 'time_range_mode'];
+        foreach ($data as $field => $value) {
+            $old = $original[$field] ?? null;
+            $same = $old === $value;
+            if ($old !== null && $value !== null && in_array($field, $integerFields, true)) {
+                $same = (int)$old === (int)$value;
+            } elseif ($field === 'strategy_value' && is_numeric($old) && is_numeric($value)) {
+                // This verified DECIMAL(10,2) value may arrive as int, float or text.
+                $same = bccomp((string)$old, (string)$value, 2) === 0;
+            }
+            if (!$same) {
+                $data['update_time'] = new \think\db\Expression('CAST(CURRENT_TIMESTAMP AS TIMESTAMP(0))');
+                break;
+            }
+        }
+        return $data;
+    }
+
     /**
      * 同步关联
      * @param int $strategyId