diff --git a/doc/db/tables_xxl_job.sql b/doc/db/tables_xxl_job.sql
index f956ea9e..33d36eec 100644
--- a/doc/db/tables_xxl_job.sql
+++ b/doc/db/tables_xxl_job.sql
@@ -54,6 +54,7 @@ CREATE TABLE `xxl_job_log` (
   PRIMARY KEY (`id`),
   KEY `I_trigger_time` (`trigger_time`),
   KEY `I_handle_code` (`handle_code`),
+  KEY `I_jobid_jobgroup` (`job_id`,`job_group`),
   KEY `I_job_id` (`job_id`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;