diff --git a/sql.md b/sql.md
index 9e7a82e..13ac8dd 100644
--- a/sql.md
+++ b/sql.md
@@ -8,4 +8,11 @@
 select '单智能体' AS agent_type, agent.agent_id, agent.agent_name, IFNULL(aus.user_num,0) AS user_num from `agent` AS agent left join agent_usage_stats AS aus ON agent.agent_id = aus.agent_id where agent.del_flag = '0'
 UNION ALL
 select '多智能体' AS agent_type, ma.agent_id, ma.agent_name, IFNULL(maus.user_num,0) AS user_num from `multi_agent_main` AS ma left join agent_usage_stats AS maus ON ma.agent_id = maus.agent_id where ma.del_flag = '0';
+```
+
+## 查客户端是否登录
+
+```sql
+select * from `mis-cloud-claw`.`sys_logininfor` 
+where client_key = (select client_key from `mis-cloud-claw`.`sys_client` where `client_id` = '客户端ID');
 ```
\ No newline at end of file