diff --git a/PostgreSQL/prism/prism.sql b/PostgreSQL/prism/prism.sql
index 4e29d66..c718ef3 100644
--- a/PostgreSQL/prism/prism.sql
+++ b/PostgreSQL/prism/prism.sql
@@ -110,7 +110,7 @@ order by count((world_id, x, y, z)) desc;
 -- 1天内，活塞破换方块，按方块类型分组
 select blocks.name, count((affected_block_id, blocks.name))
 from activities
-left join blocks on activities.affected_block_id = blocks.block_id
+         left join blocks on activities.affected_block_id = blocks.block_id
 where action_id = (select action_id from actions where action = 'block-break')
   and cause_id = (select causes.cause_id from causes where cause = 'piston')
   and timestamp > EXTRACT(EPOCH FROM current_timestamp(0))::bigint - 86400 * 1
@@ -129,7 +129,7 @@ order by count((world_id, x, y, z)) desc;
 -- 1天内，爆炸破换方块，按方块类型分组
 select blocks.name, count((affected_block_id, blocks.name))
 from activities
-left join blocks on activities.affected_block_id = blocks.block_id
+         left join blocks on activities.affected_block_id = blocks.block_id
 where action_id = (select action_id from actions where action = 'block-break')
   and cause_id = (select causes.cause_id from causes where cause = 'explosion')
   and timestamp > EXTRACT(EPOCH FROM current_timestamp(0))::bigint - 86400 * 1
@@ -173,14 +173,14 @@ where action_id = (select action_id from actions where action = 'item-dispense')
 group by descriptor
 order by count(descriptor) desc;
 
--- 1天内，发射的潜影盒，按坐标分组
-select descriptor, count(*)
+-- 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
-where action_id = 2
+where action_id = (select action_id from actions where action = 'item-dispense')
   and timestamp > EXTRACT(EPOCH FROM current_timestamp(0))::bigint - 86400 * 1
-  and descriptor = 'Shulker Box'
-group by descriptor
-order by count(descriptor) desc;
+  and descriptor = 'Minecart'
+group by world_id, x, y, z
+order by count((world_id, x, y, z)) desc;
 
 -- 1天内的 entity-death 行为按玩家分组
 select cause_player_id, players.player, count(*)