From 57bbca99548b54f3cbfc330989af17bf6a547b14 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=B8=B8=E7=86=9F=E5=90=B4=E5=BD=A6=E7=A5=96?=
 <qi.ruan@xujiesoft.com>
Date: Thu, 4 Dec 2025 16:27:02 +0800
Subject: [PATCH] =?UTF-8?q?=E9=BD=90=E5=A5=97=E4=BF=AE=E6=94=B9?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../WcsIntegrationMapper.xml                  | 145 ++++++++++--------
 .../mapper/notify/NewIssureMapper.xml         |  11 +-
 .../mapper/warehouse/PalletMapper.xml         |  14 +-
 3 files changed, 99 insertions(+), 71 deletions(-)

diff --git a/src/main/resources/mapper/automatedWarehouse/WcsIntegrationMapper.xml b/src/main/resources/mapper/automatedWarehouse/WcsIntegrationMapper.xml
index d84da61..99029bc 100644
--- a/src/main/resources/mapper/automatedWarehouse/WcsIntegrationMapper.xml
+++ b/src/main/resources/mapper/automatedWarehouse/WcsIntegrationMapper.xml
@@ -159,10 +159,11 @@
     </select>
     
     <!-- 获取栈板明细 - AI制作 -->
+    <!-- 优化：添加 WITH (NOLOCK) 避免死锁 - rqrq -->
     <select id="getPalletDetails" resultType="java.util.Map">
         SELECT a.site, a.pallet_id as palletId, a.position, a.layer, a.serial_no as serialNo, a.part_no as partNo, 
                a.create_date as createDate, a.create_by as createBy
-        FROM pallet_detail a
+        FROM pallet_detail a WITH (NOLOCK)
         WHERE a.site = #{site} AND a.pallet_id = #{palletId}
         <if test="position != null and position != ''">
             AND a.position = #{position}
@@ -181,17 +182,20 @@
         WHERE a.site = #{site} AND a.pallet_id = #{palletId}
 
     </select>
+    <!-- 优化：添加 WITH (NOLOCK) 避免死锁 - rqrq -->
     <select id="getPalletTypeInfoByPallet" resultType="PalletType">
-        select b.site,b.pallet_type,b.type_desc,b.active,b.remark,b.pallet_family,b.wcs_pallet_type,b.wcs_base_pallet_type,b.wcs_auto_sort,
-               b.wcs_sore_type,b.max_layer
-        from pallet a left join pallet_type b on a.pallet_type=b.pallet_type  and a.site=b.site
-        where a.pallet_id=#{palletId} and a.site=#{site}
+        SELECT b.site, b.pallet_type, b.type_desc, b.active, b.remark, b.pallet_family, b.wcs_pallet_type, b.wcs_base_pallet_type, b.wcs_auto_sort,
+               b.wcs_sore_type, b.max_layer
+        FROM pallet a WITH (NOLOCK)
+        LEFT JOIN pallet_type b WITH (NOLOCK) ON a.pallet_type = b.pallet_type AND a.site = b.site
+        WHERE a.pallet_id = #{palletId} AND a.site = #{site}
     </select>
     
     <!-- 根据位置获取层数 - AI制作 -->
+    <!-- 优化：添加 WITH (NOLOCK) 避免死锁 - rqrq -->
     <select id="getLayersByPosition" resultType="java.lang.Integer">
         SELECT DISTINCT layer
-        FROM pallet_detail 
+        FROM pallet_detail WITH (NOLOCK)
         WHERE site = #{site} AND pallet_id = #{palletId} AND position = #{position}
         ORDER BY layer
     </select>
@@ -214,9 +218,10 @@
     </select>
     
     <!-- 获取栈板指定层的明细统计 - AI制作 -->
+    <!-- 优化：添加 WITH (NOLOCK) 避免死锁 - rqrq -->
     <select id="getPalletLayerStatistics" resultType="java.util.Map">
         SELECT position, COUNT(1) as count
-        FROM pallet_detail 
+        FROM pallet_detail WITH (NOLOCK)
         WHERE site = #{site} AND pallet_id = #{palletId} AND layer = #{layer}
         GROUP BY position
     </select>
@@ -250,10 +255,11 @@
         </if>
     </select>
 
+    <!-- 优化：添加 WITH (NOLOCK) 避免死锁 - rqrq -->
     <select id="getNowStation" resultType="AgvStation">
         SELECT TOP 1 b.station_code, b.location_code, b.warehouse_code
-        FROM pallet a 
-        LEFT JOIN agv_station b ON a.location_code = b.station_code
+        FROM pallet a WITH (NOLOCK)
+        LEFT JOIN agv_station b WITH (NOLOCK) ON a.location_code = b.station_code
         WHERE a.site = #{site} AND a.pallet_id = #{palletId} AND a.is_deleted = '0'
     </select>
     
@@ -324,9 +330,10 @@
     </insert>
 
     <!-- 获取指定位置已占用的层数（排除指定标签） - AI制作 -->
+    <!-- 优化：添加 WITH (NOLOCK) 避免死锁 - rqrq -->
     <select id="getOccupiedLayersExcludeSerial" resultType="java.lang.Integer">
         SELECT DISTINCT layer
-        FROM pallet_detail 
+        FROM pallet_detail WITH (NOLOCK)
         WHERE site = #{site} 
         AND pallet_id = #{palletId} 
         AND position = #{position}
@@ -370,9 +377,10 @@
     </update>
 
     <!-- 检查栈板是否正在被调用 - AI制作 -->
+    <!-- 优化：添加 WITH (NOLOCK) 避免死锁 - rqrq -->
     <select id="checkPalletCallingFlag" resultType="java.lang.String">
         SELECT calling_flag
-        FROM pallet 
+        FROM pallet WITH (NOLOCK)
         WHERE site = #{site} AND pallet_id = #{palletId} AND is_deleted = '0'
     </select>
 
@@ -419,9 +427,10 @@
     </select>
 
     <!-- 统计栈板明细数量 - AI制作 -->
+    <!-- 优化：添加 WITH (NOLOCK) 避免死锁 - rqrq -->
     <select id="countPalletDetails" resultType="java.lang.Integer">
         SELECT COUNT(1)
-        FROM pallet_detail
+        FROM pallet_detail WITH (NOLOCK)
         WHERE site = #{site} AND pallet_id = #{palletId}
     </select>
 
@@ -523,28 +532,29 @@
     </insert>
 
     <!-- 检查站点是否有栈板 - AI制作 -->
+    <!-- 优化：添加 WITH (NOLOCK) 避免死锁 - rqrq -->
     <select id="checkStationHasPallet" resultType="java.lang.Integer">
         SELECT COUNT(1)
-        FROM pallet 
+        FROM pallet WITH (NOLOCK)
         WHERE site = #{site} 
         AND location_code = #{stationCode} 
         AND is_deleted = '0'
     </select>
+    <!-- 优化：添加 WITH (NOLOCK) 避免死锁 - rqrq -->
     <select id="getPalletDataByStation" resultType="PalletData">
-        SELECT TOP 1 pallet_id, location_code, status,pallet_family, pallet_type
-        FROM pallet
+        SELECT TOP 1 pallet_id, location_code, status, pallet_family, pallet_type
+        FROM pallet WITH (NOLOCK)
         WHERE site = #{site}
         AND location_code = #{stationCode}
-
     </select>
     <!-- 获取站点的栈板ID - AI制作 -->
+    <!-- 优化：添加 WITH (NOLOCK) 避免死锁 - rqrq -->
     <select id="getPalletIdByStation" resultType="java.lang.String">
         SELECT TOP 1 pallet_id
-        FROM pallet 
+        FROM pallet WITH (NOLOCK)
         WHERE site = #{site} 
         AND location_code = #{stationCode} 
         AND is_deleted = '0'
-
     </select>
 
     <!-- 根据ID查询运输任务 - AI制作 -->
@@ -655,16 +665,17 @@
         AND wcs_flag = 0
     </update>
 
+    <!-- 优化：添加 WITH (NOLOCK) 避免死锁 - rqrq -->
     <select id="getPalletDetailsNewDetail"  resultType="PalletDetailData">
-        select a.site,a.pallet_id,a.[position],a.layer,a.serial_no,a.part_no,a.create_date,a.create_by,a.wcs_flag,
-        b.part_desc,b.qty,b.batch_no,b.wdr,c.weight,b.length,b.width,c.height,c.is_robot_pick,um_id,b.height as realHeight
-            ,c.is_commonly_used, CONVERT(varchar(10),isnull( isnull(b.manufacture_date,b.receive_date),getdate()), 23) manufactureDateStr
-        ,b.reserve_flag
-        from pallet_detail a
-        left join handling_unit b on a.site=b.site and a.serial_no=b.unit_id
-        left join part_attribute c on a.site=c.site and a.part_no=c.part_no
-        where a.site=#{site} and a.pallet_id=#{palletId}
-        and a.wcs_flag = 1
+        SELECT a.site, a.pallet_id, a.[position], a.layer, a.serial_no, a.part_no, a.create_date, a.create_by, a.wcs_flag,
+               b.part_desc, b.qty, b.batch_no, b.wdr, c.weight, b.length, b.width, c.height, c.is_robot_pick, um_id, b.height as realHeight,
+               c.is_commonly_used, CONVERT(varchar(10), ISNULL(ISNULL(b.manufacture_date, b.receive_date), GETDATE()), 23) manufactureDateStr,
+               b.reserve_flag
+        FROM pallet_detail a WITH (NOLOCK)
+        LEFT JOIN handling_unit b WITH (NOLOCK) ON a.site = b.site AND a.serial_no = b.unit_id
+        LEFT JOIN part_attribute c WITH (NOLOCK) ON a.site = c.site AND a.part_no = c.part_no
+        WHERE a.site = #{site} AND a.pallet_id = #{palletId}
+          AND a.wcs_flag = 1
     </select>
     <update id="updateSOIssueNotifyOrderMaterialListDetailOutWcsFlag">
         WITH RankedRecords AS (
@@ -1031,9 +1042,13 @@
           AND status = #{oldStatus}
     </update>
     
+    <!-- 优化：添加 WITH (ROWLOCK) 避免锁升级导致死锁 - rqrq -->
     <update id="updatePalletWcsLocation" >
-        update pallet set wcs_location = #{location},updated_by='wms_sys',updated_time=getdate()
-        where site = #{site} and pallet_id = #{palletId}
+        UPDATE pallet WITH (ROWLOCK)
+        SET wcs_location = #{location},
+            updated_by = 'wms_sys',
+            updated_time = GETDATE()
+        WHERE site = #{site} AND pallet_id = #{palletId}
     </update>
 
     <!-- 更新WCS回调任务重试次数 - AI制作 -->
@@ -1229,9 +1244,10 @@
     </update>
 
     <!-- 获取指定层已占用的位置列表 - rqrq -->
+    <!-- 优化：添加 WITH (NOLOCK) 避免死锁 - rqrq -->
     <select id="getOccupiedPositionsByLayer" resultType="java.lang.String">
         SELECT DISTINCT position
-        FROM pallet_detail
+        FROM pallet_detail WITH (NOLOCK)
         WHERE site = #{site}
           AND pallet_id = #{palletId}
           AND layer = #{layer}
@@ -1267,13 +1283,14 @@
     <!-- ==================== 栈板换站相关SQL - rqrq ==================== -->
     
     <!-- rqrq - 检查栈板calling_flag并获取当前站点信息 -->
+    <!-- 优化：添加 WITH (NOLOCK) 避免死锁 - rqrq -->
     <select id="checkPalletForChangeStation" resultType="CheckPalletResult">
         SELECT 
             p.calling_flag AS callingFlag,
             s.station_id AS currentStationId,
             s.station_code AS currentStationCode
-        FROM pallet p
-        LEFT JOIN agv_station s ON p.location_code = s.station_code
+        FROM pallet p WITH (NOLOCK)
+        LEFT JOIN agv_station s WITH (NOLOCK) ON p.location_code = s.station_code
         WHERE p.site = #{site} 
           AND p.pallet_id = #{palletId}
           AND p.is_deleted = '0'
@@ -1322,20 +1339,20 @@
     <!-- ==================== 手工移动托盘相关SQL - rqrq ==================== -->
     
     <!-- rqrq - 检查托盘是否可以手工移动 -->
+    <!-- 优化：添加 WITH (NOLOCK) 避免死锁 - rqrq -->
     <select id="checkPalletForManualMove" resultType="CheckPalletResult">
         SELECT 
             p.calling_flag AS callingFlag,
             p.location_code AS currentStationCode,
             s.station_type AS stationType,
-            s.station_id as  currentStationId,
-            p.empty_flag as isEmpty ,
+            s.station_id AS currentStationId,
+            p.empty_flag AS isEmpty,
             CASE 
                 WHEN p.location_code IS NULL THEN 'Y'
-
                 ELSE 'N'
             END AS canOperate
-        FROM pallet p
-        LEFT JOIN agv_station s ON p.location_code = s.station_code
+        FROM pallet p WITH (NOLOCK)
+        LEFT JOIN agv_station s WITH (NOLOCK) ON p.location_code = s.station_code
         WHERE p.site = #{site} 
           AND p.pallet_id = #{palletId}
           AND p.is_deleted = '0'
@@ -1384,6 +1401,7 @@
     <!-- ==================== 空托盘组盘相关SQL - rqrq ==================== -->
     
     <!-- rqrq - 检查托盘是否为空托盘 -->
+    <!-- 优化：添加 WITH (NOLOCK) 避免死锁 - rqrq -->
     <select id="checkEmptyPallet" resultType="CheckPalletResult">
         SELECT 
             p.pallet_id AS palletId,
@@ -1393,16 +1411,15 @@
             s.station_id AS currentStationId,
             CASE 
                 WHEN EXISTS (
-                    SELECT 1 FROM pallet_detail pd 
+                    SELECT 1 FROM pallet_detail pd WITH (NOLOCK)
                     WHERE pd.site = p.site 
                       AND pd.pallet_id = p.pallet_id 
-                    
                 ) 
                 THEN 'N' 
                 ELSE 'Y' 
             END AS isEmpty
-        FROM pallet p
-        LEFT JOIN agv_station s ON p.location_code = s.station_code
+        FROM pallet p WITH (NOLOCK)
+        LEFT JOIN agv_station s WITH (NOLOCK) ON p.location_code = s.station_code
         WHERE p.site = #{site}
           AND p.pallet_id = #{palletId}
           AND p.is_deleted = '0'
@@ -1453,37 +1470,40 @@
     <!-- ==================== 取消WCS组盘相关SQL - rqrq ==================== -->
     
     <!-- rqrq - 检查栈板WCS组盘状态 -->
+    <!-- 优化：添加 WITH (NOLOCK) 避免死锁 - rqrq -->
     <select id="checkPalletWcsStatus" resultType="CheckPalletResult">
         SELECT 
             p.pallet_id AS palletId,
             p.calling_flag AS callingFlag,
             CASE 
                 WHEN EXISTS (
-                    SELECT 1 FROM pallet_detail pd 
+                    SELECT 1 FROM pallet_detail pd WITH (NOLOCK)
                     WHERE pd.site = #{site} AND pd.pallet_id = #{palletId} AND pd.wcs_flag = 0
                 ) THEN 'Y'
                 ELSE 'N'
             END AS canOperate,  -- 借用canOperate字段存储hasSentWcsTask
             CASE 
                 WHEN EXISTS (
-                    SELECT 1 FROM pallet_detail pd 
+                    SELECT 1 FROM pallet_detail pd WITH (NOLOCK)
                     WHERE pd.site = #{site} AND pd.pallet_id = #{palletId}
                 ) THEN 'Y'
                 ELSE 'N'
             END AS isEmpty  -- 借用isEmpty字段存储hasDetail
-        FROM pallet p
+        FROM pallet p WITH (NOLOCK)
         WHERE p.site = #{site} AND p.pallet_id = #{palletId} AND p.is_deleted = '0'
     </select>
     
     <!-- rqrq - 检查栈板是否有wcs_flag=0的明细 -->
+    <!-- 优化：添加 WITH (NOLOCK) 避免死锁 - rqrq -->
     <select id="countPalletDetailWithWcsFlagZero" resultType="int">
         SELECT COUNT(1)
-        FROM pallet_detail
+        FROM pallet_detail WITH (NOLOCK)
         WHERE site = #{site} AND pallet_id = #{palletId} AND wcs_flag = 0
     </select>
+    <!-- 优化：添加 WITH (NOLOCK) 避免死锁 - rqrq -->
     <select id="countPalletDetailWithWcsFlagOne" resultType="int">
         SELECT COUNT(1)
-        FROM pallet_detail
+        FROM pallet_detail WITH (NOLOCK)
         WHERE site = #{site} AND pallet_id = #{palletId} AND wcs_flag = 1
     </select>
     
@@ -1518,6 +1538,7 @@
     <!-- ==================== 预约取托盘相关SQL - rqrq ==================== -->
     
     <!-- rqrq - 查询空托盘区可用的空托盘 -->
+    <!-- 优化：添加 WITH (NOLOCK) 避免死锁 - rqrq -->
     <select id="findAvailableEmptyPallet" resultType="Pallet">
         SELECT TOP 1
             p.id,
@@ -1540,9 +1561,9 @@
             p.sore_type AS soreType,
             p.auto_sort AS autoSort,
             p.empty_flag AS emptyFlag
-        FROM pallet p
-        INNER JOIN agv_station s ON p.location_code = s.station_code
-        left join pallet_detail c on p.pallet_id=c.pallet_id and p.site=c.site
+        FROM pallet p WITH (NOLOCK)
+        INNER JOIN agv_station s WITH (NOLOCK) ON p.location_code = s.station_code
+        LEFT JOIN pallet_detail c WITH (NOLOCK) ON p.pallet_id = c.pallet_id AND p.site = c.site
         WHERE p.site = #{site}
           AND p.pallet_type = #{palletType}
           AND p.calling_flag = 'N'
@@ -1550,11 +1571,12 @@
           AND s.area_type = 'Z101'
           AND s.status_db = 1
           AND s.active = 'Y'
-          and c.id IS NULL
+          AND c.id IS NULL
         ORDER BY p.created_time ASC
     </select>
     
     <!-- rqrq - 检查指定托盘是否就绪 -->
+    <!-- 优化：添加 WITH (NOLOCK) 避免死锁 - rqrq -->
     <select id="checkPalletReady" resultType="Pallet">
         SELECT
             p.id,
@@ -1577,10 +1599,10 @@
             p.sore_type AS soreType,
             p.auto_sort AS autoSort,
             p.empty_flag AS emptyFlag,
-            s.status_db as statusDb,
-        s.area_type as areaId
-        FROM pallet p
-        INNER JOIN agv_station s ON p.location_code = s.station_code
+            s.status_db AS statusDb,
+            s.area_type AS areaId
+        FROM pallet p WITH (NOLOCK)
+        INNER JOIN agv_station s WITH (NOLOCK) ON p.location_code = s.station_code
         WHERE p.site = #{site}
           AND p.pallet_id = #{palletId}
           AND p.calling_flag = 'N'
@@ -1718,9 +1740,10 @@
     </select>
     
     <!-- rqrq - 根据序列号列表查询栈板ID列表（去重） -->
+    <!-- 优化：添加 WITH (NOLOCK) 避免死锁 - rqrq -->
     <select id="getPalletIdsBySerialNos" resultType="String">
         SELECT DISTINCT pallet_id
-        FROM pallet_detail
+        FROM pallet_detail WITH (NOLOCK)
         WHERE site = #{site}
         <if test="serialNoList != null and serialNoList.size() > 0">
             AND serial_no IN
@@ -1746,30 +1769,30 @@
         FROM wms_transport_task
         WHERE site = #{site}
           AND pallet_id = #{palletId}
-          AND status != '已完成'
-          AND status != '已取消'
+        AND status IN ('已创建', '已下达', '执行中', '已预约')
         ORDER BY created_time DESC
     </select>
     
     <!-- rqrq - 检查栈板是否放满（根据pallet_type_area的点位数和max_layer判断） -->
+    <!-- 优化：添加 WITH (NOLOCK) 避免死锁 - rqrq -->
     <select id="checkPalletIsFull" resultType="int">
         WITH PalletInfo AS (
             -- 获取栈板类型和最大层数 - rqrq
             SELECT p.pallet_type, pt.max_layer
-            FROM pallet p
-            INNER JOIN pallet_type pt ON p.site = pt.site AND p.pallet_type = pt.pallet_type
+            FROM pallet p WITH (NOLOCK)
+            INNER JOIN pallet_type pt WITH (NOLOCK) ON p.site = pt.site AND p.pallet_type = pt.pallet_type
             WHERE p.site = #{site} AND p.pallet_id = #{palletId}
         ),
         PositionCount AS (
             -- 获取该类型栈板的点位数 - rqrq
             SELECT COUNT(1) AS position_count
-            FROM pallet_type_area pta
+            FROM pallet_type_area pta WITH (NOLOCK)
             INNER JOIN PalletInfo pi ON pta.site = #{site} AND pta.pallet_type = pi.pallet_type
         ),
         DetailCount AS (
             -- 获取栈板已使用的明细数量 - rqrq
             SELECT COUNT(1) AS detail_count
-            FROM pallet_detail
+            FROM pallet_detail WITH (NOLOCK)
             WHERE site = #{site} AND pallet_id = #{palletId}
         ),
         MaxCapacity AS (
diff --git a/src/main/resources/mapper/notify/NewIssureMapper.xml b/src/main/resources/mapper/notify/NewIssureMapper.xml
index 17f3b6d..b04a35b 100644
--- a/src/main/resources/mapper/notify/NewIssureMapper.xml
+++ b/src/main/resources/mapper/notify/NewIssureMapper.xml
@@ -185,9 +185,10 @@
     </select>
     
     <!-- rqrq - 根据条码列表查询所有栈板ID -->
+    <!-- 优化：添加 WITH (NOLOCK) 避免死锁 - rqrq -->
     <select id="getPalletIdsBySerialNos" resultType="java.lang.String">
         SELECT DISTINCT pd.pallet_id
-        FROM pallet_detail pd
+        FROM pallet_detail pd WITH (NOLOCK)
         WHERE pd.site = #{site}
         AND pd.serial_no IN
         <foreach collection="serialNos" item="serialNo" open="(" separator="," close=")">
@@ -196,15 +197,16 @@
     </select>
     
     <!-- rqrq - 检查栈板的calling_flag -->
+    <!-- 优化：添加 WITH (NOLOCK) 避免死锁 - rqrq -->
     <select id="checkCallingFlagByPalletIds" resultType="java.lang.String">
         SELECT pallet_id
-        FROM pallet
+        FROM pallet WITH (NOLOCK)
         WHERE site = #{site}
         AND pallet_id IN
         <foreach collection="palletIds" item="palletId" open="(" separator="," close=")">
             #{palletId}
         </foreach>
-        AND calling_flag ='Y'
+        AND calling_flag = 'Y'
     </select>
     
     <!-- rqrq - 根据notifyNo和productionOrderNo查询itemNo -->
@@ -341,9 +343,10 @@
     </update>
     
     <!-- rqrq - 根据栈板ID和序列号列表查询栈板明细信息 -->
+    <!-- 优化：添加 WITH (NOLOCK) 避免死锁 - rqrq -->
     <select id="getPalletDetailsByPalletAndSerials" resultType="com.gaotao.modules.automatedWarehouse.entity.PalletDetail">
         SELECT position, layer, serial_no as serialNo
-        FROM pallet_detail
+        FROM pallet_detail WITH (NOLOCK)
         WHERE site = #{site}
         AND pallet_id = #{palletId}
         AND serial_no IN
diff --git a/src/main/resources/mapper/warehouse/PalletMapper.xml b/src/main/resources/mapper/warehouse/PalletMapper.xml
index 45e8197..c47d9c0 100644
--- a/src/main/resources/mapper/warehouse/PalletMapper.xml
+++ b/src/main/resources/mapper/warehouse/PalletMapper.xml
@@ -4,6 +4,7 @@
 <mapper namespace="com.gaotao.modules.warehouse.dao.PalletMapper">
 
     <!-- rqrq - 查询托盘列表（关联pallet_type和pallet_family表） -->
+    <!-- 优化：添加 WITH (NOLOCK) 避免死锁 - rqrq -->
     <select id="selectPalletList" resultType="PalletData">
         SELECT
             p.id,
@@ -34,9 +35,9 @@
             pt.max_layer as maxLayer,
             pt.active as active,
             pf.pallet_family_desc as palletFamilyDesc
-        FROM pallet p
-        LEFT JOIN pallet_type pt ON p.site = pt.site AND p.pallet_type = pt.pallet_type
-        LEFT JOIN pallet_family pf ON p.site = pf.site AND p.pallet_family = pf.pallet_family
+        FROM pallet p WITH (NOLOCK)
+        LEFT JOIN pallet_type pt WITH (NOLOCK) ON p.site = pt.site AND p.pallet_type = pt.pallet_type
+        LEFT JOIN pallet_family pf WITH (NOLOCK) ON p.site = pf.site AND p.pallet_family = pf.pallet_family
     <where>
         <if test="query.site != null and query.site != ''">
             AND p.site = #{query.site}
@@ -67,6 +68,7 @@
     </select>
 
     <!-- rqrq - 根据托盘ID查询托盘信息（关联pallet_type和pallet_family表） -->
+    <!-- 优化：添加 WITH (NOLOCK) 避免死锁 - rqrq -->
     <select id="selectPalletByPalletId" resultType="PalletData">
         SELECT
             p.id,
@@ -97,9 +99,9 @@
             pt.max_layer as maxLayer,
             pt.active as active,
             pf.pallet_family_desc as palletFamilyDesc
-        FROM pallet p
-        LEFT JOIN pallet_type pt ON p.site = pt.site AND p.pallet_type = pt.pallet_type
-        LEFT JOIN pallet_family pf ON p.site = pf.site AND p.pallet_family = pf.pallet_family
+        FROM pallet p WITH (NOLOCK)
+        LEFT JOIN pallet_type pt WITH (NOLOCK) ON p.site = pt.site AND p.pallet_type = pt.pallet_type
+        LEFT JOIN pallet_family pf WITH (NOLOCK) ON p.site = pf.site AND p.pallet_family = pf.pallet_family
         WHERE p.pallet_id = #{palletId}
     </select>