diff --git a/PostgreSQL/prism/prism.sql b/PostgreSQL/prism/prism.sql
index 008956c..372dd4f 100644
--- a/PostgreSQL/prism/prism.sql
+++ b/PostgreSQL/prism/prism.sql
@@ -182,6 +182,14 @@ where action_id = (select action_id from actions where action = 'item-dispense')
 group by descriptor
 order by count(descriptor) desc;
 
+-- 1天内，item-dispense行为，按坐标分组
+select world_id, x, y, z, count((world_id, x, y, z))
+from activities
+where action_id = (select action_id from actions where action = 'item-dispense')
+  and timestamp > EXTRACT(EPOCH FROM current_timestamp(0))::bigint - 86400 * 1
+group by world_id, x, y, z
+order by count((world_id, x, y, z)) desc;
+
 -- 1天内，发射的矿车，按坐标分组
 select world_id, x, y, z, count((world_id, x, y, z))
 from activities