From f7a871e3e42dacc199700bf8eedaee1f928a2bbb Mon Sep 17 00:00:00 2001
From: liuyihe <2513762445@qq.com>
Date: Tue, 13 Oct 2026 10:47:52 +0800
Subject: [PATCH 1/3] =?UTF-8?q?=E8=B4=B4=E6=A0=87=E7=94=B3=E8=AF=B7?=
 =?UTF-8?q?=EF=BC=8C=E4=BB=93=E5=82=A8=E8=BD=AC=E8=BF=90?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../mapper/ReturnInventoryMovementMapper.java   | 17 +++++++++--------
 .../ReturnOutboundPdaPersistenceTest.java       | 12 ++++++++++++
 2 files changed, 21 insertions(+), 8 deletions(-)

diff --git a/lastleg-service/src/main/java/com/baiyue/lastleg/returnreceipt/mapper/ReturnInventoryMovementMapper.java b/lastleg-service/src/main/java/com/baiyue/lastleg/returnreceipt/mapper/ReturnInventoryMovementMapper.java
index 57bda1bff..49b39b262 100644
--- a/lastleg-service/src/main/java/com/baiyue/lastleg/returnreceipt/mapper/ReturnInventoryMovementMapper.java
+++ b/lastleg-service/src/main/java/com/baiyue/lastleg/returnreceipt/mapper/ReturnInventoryMovementMapper.java
@@ -10,18 +10,19 @@ import java.util.List;
 /** Receipt/merge projections plus immutable outbound SKU movements. */
 @Mapper
 public interface ReturnInventoryMovementMapper extends com.baomidou.mybatisplus.core.mapper.BaseMapper<com.baiyue.lastleg.returnreceipt.entity.ReturnInventoryOutboundMovement> {
-    String MOVEMENTS = "SELECT o.customer_id customerId,o.overseas_warehouse_id overseasWarehouseId,ri.sku_code skuCode,oi.product_name_zh productNameZh," +
-        "'RECEIPT' movementType,r.receipt_no referenceNo,ri.received_quantity totalDelta,ri.received_quantity availableDelta,r.signed_at occurredAt " +
+    // UNION text projections must not inherit differing source-table or connection collations.
+    String MOVEMENTS = "SELECT CONVERT(o.customer_id USING utf8mb4) COLLATE utf8mb4_unicode_ci customerId,CONVERT(o.overseas_warehouse_id USING utf8mb4) COLLATE utf8mb4_unicode_ci overseasWarehouseId,CONVERT(ri.sku_code USING utf8mb4) COLLATE utf8mb4_unicode_ci skuCode,CONVERT(oi.product_name_zh USING utf8mb4) COLLATE utf8mb4_unicode_ci productNameZh," +
+        "CONVERT('RECEIPT' USING utf8mb4) COLLATE utf8mb4_unicode_ci movementType,CONVERT(r.receipt_no USING utf8mb4) COLLATE utf8mb4_unicode_ci referenceNo,ri.received_quantity totalDelta,ri.received_quantity availableDelta,r.signed_at occurredAt " +
         "FROM ll_return_receipt r JOIN ll_return_order o ON o.id=r.return_order_id JOIN ll_return_receipt_item ri ON ri.receipt_id=r.id " +
         "JOIN ll_return_order_item oi ON oi.id=ri.return_order_item_id " +
-        "UNION ALL SELECT c.customer_id,c.overseas_warehouse_id,i.sku_code,i.product_name_zh,'MERGE',c.carton_mark,0,-i.quantity,c.created_at " +
+        "UNION ALL SELECT CONVERT(c.customer_id USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT(c.overseas_warehouse_id USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT(i.sku_code USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT(i.product_name_zh USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT('MERGE' USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT(c.carton_mark USING utf8mb4) COLLATE utf8mb4_unicode_ci,0,-i.quantity,c.created_at " +
         "FROM ll_return_inventory_carton c JOIN ll_return_inventory_carton_item i ON i.carton_id=c.id WHERE c.source_batch_no='MERGED'" +
-        " UNION ALL SELECT customer_id,overseas_warehouse_id,sku_code,product_name_zh,'OUTBOUND',outbound_no," +
+        " UNION ALL SELECT CONVERT(customer_id USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT(overseas_warehouse_id USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT(sku_code USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT(product_name_zh USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT('OUTBOUND' USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT(outbound_no USING utf8mb4) COLLATE utf8mb4_unicode_ci," +
         "-quantity,-quantity,occurred_at FROM ll_return_inventory_outbound_movement" +
-        " UNION ALL SELECT customer_id,overseas_warehouse_id,old_sku_code,product_name_zh,'SKU_CONVERSION_OUT',relabel_no,-quantity,-quantity,completed_at FROM ll_return_sku_conversion" +
-        " UNION ALL SELECT customer_id,overseas_warehouse_id,new_sku_code,product_name_zh,'SKU_CONVERSION_IN',relabel_no,quantity,quantity,completed_at FROM ll_return_sku_conversion" +
-        " UNION ALL SELECT customer_id,overseas_warehouse_id,old_sku_code,product_name_zh,'SKU_CONVERSION_REVERSE_IN',relabel_no,quantity,quantity,reversed_at FROM ll_return_sku_conversion WHERE status='REVERSED'" +
-        " UNION ALL SELECT customer_id,overseas_warehouse_id,new_sku_code,product_name_zh,'SKU_CONVERSION_REVERSE_OUT',relabel_no,-quantity,-quantity,reversed_at FROM ll_return_sku_conversion WHERE status='REVERSED'";
+        " UNION ALL SELECT CONVERT(customer_id USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT(overseas_warehouse_id USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT(old_sku_code USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT(product_name_zh USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT('SKU_CONVERSION_OUT' USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT(relabel_no USING utf8mb4) COLLATE utf8mb4_unicode_ci,-quantity,-quantity,completed_at FROM ll_return_sku_conversion" +
+        " UNION ALL SELECT CONVERT(customer_id USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT(overseas_warehouse_id USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT(new_sku_code USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT(product_name_zh USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT('SKU_CONVERSION_IN' USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT(relabel_no USING utf8mb4) COLLATE utf8mb4_unicode_ci,quantity,quantity,completed_at FROM ll_return_sku_conversion" +
+        " UNION ALL SELECT CONVERT(customer_id USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT(overseas_warehouse_id USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT(old_sku_code USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT(product_name_zh USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT('SKU_CONVERSION_REVERSE_IN' USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT(relabel_no USING utf8mb4) COLLATE utf8mb4_unicode_ci,quantity,quantity,reversed_at FROM ll_return_sku_conversion WHERE status='REVERSED'" +
+        " UNION ALL SELECT CONVERT(customer_id USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT(overseas_warehouse_id USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT(new_sku_code USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT(product_name_zh USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT('SKU_CONVERSION_REVERSE_OUT' USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT(relabel_no USING utf8mb4) COLLATE utf8mb4_unicode_ci,-quantity,-quantity,reversed_at FROM ll_return_sku_conversion WHERE status='REVERSED'";
 
     @Select("<script>SELECT COUNT(*) FROM (" + MOVEMENTS + ") m WHERE 1=1 " +
         "<if test='customerId != null and customerId != \"\"'>AND m.customerId=#{customerId} </if>" +
diff --git a/lastleg-service/src/test/java/com/baiyue/lastleg/delivery/service/ReturnOutboundPdaPersistenceTest.java b/lastleg-service/src/test/java/com/baiyue/lastleg/delivery/service/ReturnOutboundPdaPersistenceTest.java
index 793fc2459..4c810efe5 100644
--- a/lastleg-service/src/test/java/com/baiyue/lastleg/delivery/service/ReturnOutboundPdaPersistenceTest.java
+++ b/lastleg-service/src/test/java/com/baiyue/lastleg/delivery/service/ReturnOutboundPdaPersistenceTest.java
@@ -58,6 +58,18 @@ class ReturnOutboundPdaPersistenceTest {
         for (Class<?> mapper : List.of(OutboundOrderMapper.class, OutboundPalletItemMapper.class,
                 OutboundPdaTaskMapper.class, OutboundPdaPickMapper.class, DeliveryOrderMapper.class, ReturnInventoryCartonMapper.class,
                 ReturnInventoryCartonItemMapper.class, ReturnInventoryBalanceMapper.class, ReturnInventoryMovementMapper.class)) configuration.addMapper(mapper);
+        // H2 does not implement MySQL charset/collation expressions. Preserve the real
+        // movement query and bindings, removing only those expressions in this H2 fixture.
+        for (String method : List.of("platformCount", "platformPage")) {
+            var statement = configuration.getMappedStatement(ReturnInventoryMovementMapper.class.getName() + "." + method);
+            var mysqlSource = statement.getSqlSource();
+            org.apache.ibatis.mapping.SqlSource h2Source = params -> {
+                var bound = mysqlSource.getBoundSql(params);
+                String sql = bound.getSql().replaceAll("CONVERT\\(([^()]+) USING utf8mb4\\) COLLATE utf8mb4_unicode_ci", "$1");
+                return new org.apache.ibatis.mapping.BoundSql(configuration, sql, bound.getParameterMappings(), params);
+            };
+            ReflectionTestUtils.setField(statement, "sqlSource", h2Source);
+        }
         var factory = new MybatisSqlSessionFactoryBean(); factory.setDataSource(ds); factory.setConfiguration(configuration);
         var session = new SqlSessionTemplate(factory.getObject());
         movementMapper = session.getMapper(ReturnInventoryMovementMapper.class);

From c920d954efabf58274394f550f5779eb29c798fc Mon Sep 17 00:00:00 2001
From: liuyihe <2513762445@qq.com>
Date: Tue, 13 Oct 2026 10:47:58 +0800
Subject: [PATCH 2/3] =?UTF-8?q?=E8=B4=B4=E6=A0=87=E7=94=B3=E8=AF=B7?=
 =?UTF-8?q?=EF=BC=8C=E4=BB=93=E5=82=A8=E8=BD=AC=E8=BF=90?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../ReturnInventoryMovementSqlTest.java       | 42 +++++++++++++++++++
 1 file changed, 42 insertions(+)
 create mode 100644 lastleg-service/src/test/java/com/baiyue/lastleg/returnreceipt/service/ReturnInventoryMovementSqlTest.java

diff --git a/lastleg-service/src/test/java/com/baiyue/lastleg/returnreceipt/service/ReturnInventoryMovementSqlTest.java b/lastleg-service/src/test/java/com/baiyue/lastleg/returnreceipt/service/ReturnInventoryMovementSqlTest.java
new file mode 100644
index 000000000..b9915e50f
--- /dev/null
+++ b/lastleg-service/src/test/java/com/baiyue/lastleg/returnreceipt/service/ReturnInventoryMovementSqlTest.java
@@ -0,0 +1,42 @@
+package com.baiyue.lastleg.returnreceipt.service;
+
+import com.baiyue.lastleg.returnreceipt.mapper.ReturnInventoryMovementMapper;
+import org.apache.ibatis.builder.annotation.MapperAnnotationBuilder;
+import org.apache.ibatis.session.Configuration;
+import org.junit.jupiter.api.Test;
+
+import java.util.Map;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+class ReturnInventoryMovementSqlTest {
+    @Test
+    void everyUnionBranchNormalizesAllSixTextColumns() {
+        String[] branches = ReturnInventoryMovementMapper.MOVEMENTS.split("UNION ALL");
+        assertEquals(7, branches.length);
+        for (String branch : branches) {
+            String projection = branch.substring(0, branch.indexOf("FROM"));
+            assertEquals(6, projection.split("COLLATE utf8mb4_unicode_ci", -1).length - 1, branch);
+            assertEquals(6, projection.split("USING utf8mb4", -1).length - 1, branch);
+        }
+    }
+
+    @Test
+    void countAndPageShareNormalizedProjectionAndKeepScopeFilters() {
+        Configuration configuration = new Configuration();
+        new MapperAnnotationBuilder(configuration, ReturnInventoryMovementMapper.class).parse();
+        Map<String, Object> params = Map.of("customerId", "CUSTOMER", "warehouseId", "WAREHOUSE",
+                "skuCode", "SKU", "offset", 0L, "size", 20L);
+        for (String method : new String[]{"platformCount", "platformPage"}) {
+            var boundSql = configuration.getMappedStatement(ReturnInventoryMovementMapper.class.getName() + "." + method)
+                    .getBoundSql(params);
+            String sql = boundSql.getSql();
+            assertEquals(42, sql.split("COLLATE utf8mb4_unicode_ci", -1).length - 1);
+            assertTrue(sql.contains("m.customerId=?"));
+            assertTrue(sql.contains("m.overseasWarehouseId=?"));
+            assertTrue(sql.contains("m.skuCode LIKE CONCAT('%',?,'%')"));
+            assertEquals(method.equals("platformPage") ? 5 : 3, boundSql.getParameterMappings().size());
+        }
+    }
+}

From 3b86a6d7791a8aba3b3bb4928ee54036e98cde7c Mon Sep 17 00:00:00 2001
From: liuyihe <2513762445@qq.com>
Date: Tue, 13 Oct 2026 11:00:31 +0800
Subject: [PATCH 3/3] =?UTF-8?q?=E8=B4=B4=E6=A0=87=E7=94=B3=E8=AF=B7?=
 =?UTF-8?q?=EF=BC=8C=E4=BB=93=E5=82=A8=E8=BD=AC=E8=BF=90?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 deploy/sql/README.md                          |  2 +
 .../V23__align_return_movement_collation.sql  | 44 ++++++++++++++++
 deploy/sql/海外区域统一增量-MySQL8.sql        | 48 +++++++++---------
 .../mapper/ReturnInventoryMovementMapper.java | 17 +++----
 .../src/main/resources/db/lastleg.sql         | 50 +++++++++----------
 .../resources/db/return-sku-conversion.sql    | 14 +++---
 .../ReturnOutboundPdaPersistenceTest.java     | 12 -----
 .../ReturnInventoryMovementSqlTest.java       | 41 +++++++++++----
 8 files changed, 142 insertions(+), 86 deletions(-)
 create mode 100644 deploy/sql/migrations/overseas/baiyue_lastleg/V23__align_return_movement_collation.sql

diff --git a/deploy/sql/README.md b/deploy/sql/README.md
index 63c836090..ca918e5f0 100644
--- a/deploy/sql/README.md
+++ b/deploy/sql/README.md
@@ -1,5 +1,7 @@
 # 单测试环境数据库空库初始化
 
+`migrations/overseas/baiyue_lastleg/V23__align_return_movement_collation.sql` 将退货进销存 UNION 涉及的八张表、22 个文本字段及表默认规则显式统一为 `utf8mb4_unicode_ci`，同步 Lastleg 两份源基线与海外统一空库基线。执行前核对字段长度、默认值、可空性及目标规则下唯一索引无冲突；只修改规则，不回填或删除数据，不重放空库基线。DDL 非事务，失败时停止并复查实际已完成项；可按最终定义重跑。脚本存在不表示测试库已执行，执行后用原始计数/分页查询验证，无需发布查询转换代码。
+
 `migrations/overseas/baiyue_lastleg/V22__selfop_warehouse_daily_sales.sql` 新增自营仓库每日汇总表及销量版本 `warehouse_daily_ready` 标记。与匹配 Lastleg 一起发布；汇总随 SKU 日事实批次原子构建，完整性验证后方可发布。已有未构建汇总的销量版本须重新构建发布，不回填旧版本、不回退旧查询；空版本同样必须有就绪证据。源基线与海外空库基线同步。
 
 `migrations/overseas/baiyue_lastleg/V21__procurement_fee_confirmation_origin.sql` 增加采购费用核定入口，区分业务节点与财务操作，用于独立新增费用、替代核定及其重试权限。同步源基线和海外统一空库基线；不回填测试存量，不表示已执行。
diff --git a/deploy/sql/migrations/overseas/baiyue_lastleg/V23__align_return_movement_collation.sql b/deploy/sql/migrations/overseas/baiyue_lastleg/V23__align_return_movement_collation.sql
new file mode 100644
index 000000000..588c40a39
--- /dev/null
+++ b/deploy/sql/migrations/overseas/baiyue_lastleg/V23__align_return_movement_collation.sql
@@ -0,0 +1,44 @@
+-- Region: OVERSEAS
+-- Schema: baiyue_lastleg
+-- Purpose: 统一退货进销存 UNION 文本列排序规则，去除查询转换需求
+-- Preconditions: 八张退货表已存在；核对字段长度、可空性、默认值及唯一索引无目标规则冲突
+-- Postconditions: 指定文本字段及表默认规则统一为 utf8mb4_unicode_ci；不修改数量、状态或业务标识
+-- 不重放空库基线；本文件可重复执行。DDL 非事务，失败停止并核对后续执行范围。
+ALTER TABLE ll_return_order
+  DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci,
+  MODIFY COLUMN customer_id VARCHAR(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '客户ID和隔离键',
+  MODIFY COLUMN overseas_warehouse_id VARCHAR(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '操作海外仓ID';
+ALTER TABLE ll_return_order_item
+  DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci,
+  MODIFY COLUMN sku_code VARCHAR(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT 'SKU编码',
+  MODIFY COLUMN product_name_zh VARCHAR(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NULL COMMENT '中文品名';
+ALTER TABLE ll_return_receipt
+  DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci,
+  MODIFY COLUMN receipt_no VARCHAR(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '签收单号';
+ALTER TABLE ll_return_receipt_item
+  DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci,
+  MODIFY COLUMN sku_code VARCHAR(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT 'SKU编码';
+ALTER TABLE ll_return_inventory_carton
+  DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci,
+  MODIFY COLUMN customer_id VARCHAR(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '客户ID和隔离键',
+  MODIFY COLUMN overseas_warehouse_id VARCHAR(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '海外仓ID',
+  MODIFY COLUMN carton_mark VARCHAR(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '退货箱号和箱唛编码';
+ALTER TABLE ll_return_inventory_carton_item
+  DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci,
+  MODIFY COLUMN sku_code VARCHAR(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT 'SKU编码',
+  MODIFY COLUMN product_name_zh VARCHAR(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NULL COMMENT '中文品名';
+ALTER TABLE ll_return_inventory_outbound_movement
+  DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci,
+  MODIFY COLUMN customer_id VARCHAR(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '库存所属客户ID和隔离键',
+  MODIFY COLUMN overseas_warehouse_id VARCHAR(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '实际出库海外仓ID',
+  MODIFY COLUMN sku_code VARCHAR(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '本次出库SKU编码快照',
+  MODIFY COLUMN product_name_zh VARCHAR(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NULL COMMENT '中文品名快照',
+  MODIFY COLUMN outbound_no VARCHAR(64) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '本次退货出库业务单号';
+ALTER TABLE ll_return_sku_conversion
+  DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci,
+  MODIFY COLUMN customer_id VARCHAR(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '客户隔离键',
+  MODIFY COLUMN overseas_warehouse_id VARCHAR(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '操作海外仓ID',
+  MODIFY COLUMN old_sku_code VARCHAR(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '换标前SKU',
+  MODIFY COLUMN new_sku_code VARCHAR(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '换标后SKU',
+  MODIFY COLUMN product_name_zh VARCHAR(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NULL COMMENT '中文品名快照',
+  MODIFY COLUMN relabel_no VARCHAR(64) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '换标单号';
diff --git a/deploy/sql/海外区域统一增量-MySQL8.sql b/deploy/sql/海外区域统一增量-MySQL8.sql
index b60674589..0d8e39888 100644
--- a/deploy/sql/海外区域统一增量-MySQL8.sql
+++ b/deploy/sql/海外区域统一增量-MySQL8.sql
@@ -2373,13 +2373,13 @@ CREATE TABLE ll_relabel_status_history (
 CREATE TABLE ll_return_inventory_outbound_movement (
  id BIGINT NOT NULL COMMENT '退货出库SKU流水ID',
  outbound_pick_id BIGINT NOT NULL COMMENT '同事务PDA出库拣货记录ID',
- customer_id VARCHAR(128) NOT NULL COMMENT '库存所属客户ID和隔离键',
- overseas_warehouse_id VARCHAR(128) NOT NULL COMMENT '实际出库海外仓ID',
+ customer_id VARCHAR(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '库存所属客户ID和隔离键',
+ overseas_warehouse_id VARCHAR(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '实际出库海外仓ID',
  carton_id BIGINT NOT NULL COMMENT '真实退货库存箱ID',
  carton_mark VARCHAR(128) NOT NULL COMMENT '冻结的真实退货箱业务码',
- outbound_no VARCHAR(64) NOT NULL COMMENT '本次退货出库业务单号',
- sku_code VARCHAR(128) NOT NULL COMMENT '本次出库SKU编码快照', return_sku_quantity BIGINT NULL COMMENT '退货单SKU本来源计划出库件数快照，NULL为历史整箱出库',
- product_name_zh VARCHAR(255) NULL COMMENT '中文品名快照',
+ outbound_no VARCHAR(64) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '本次退货出库业务单号',
+ sku_code VARCHAR(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '本次出库SKU编码快照', return_sku_quantity BIGINT NULL COMMENT '退货单SKU本来源计划出库件数快照，NULL为历史整箱出库',
+ product_name_zh VARCHAR(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NULL COMMENT '中文品名快照',
  quantity BIGINT NOT NULL COMMENT '本箱该SKU实际出库件数，始终为正',
  total_before BIGINT NOT NULL COMMENT '客户仓SKU出库前实物总数量',
  total_after BIGINT NOT NULL COMMENT '客户仓SKU出库后实物总数量',
@@ -2395,7 +2395,7 @@ CREATE TABLE ll_return_inventory_outbound_movement (
  CONSTRAINT chk_ll_return_outbound_movement_delta CHECK(quantity>0 AND total_after>=0 AND available_after>=0
    AND total_before-total_after=quantity AND available_before-available_after=quantity
    AND cartons_after>=0 AND cartons_before-cartons_after IN (0,1) AND total_after>=available_after)
-) ENGINE=InnoDB COMMENT='不可变退货出库SKU库存流水';
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='不可变退货出库SKU库存流水';
 
 CREATE TABLE ll_return_inventory_balance (
   id bigint NOT NULL COMMENT '退货库存余额ID',
@@ -2418,13 +2418,13 @@ CREATE TABLE ll_return_inventory_carton (
   label_status varchar(32) DEFAULT NULL COMMENT 'WAIT_LABEL待贴标 CONFIRMED已扫码确认标签',
   new_carton_mark varchar(255) COLLATE utf8mb4_unicode_ci DEFAULT NULL COMMENT '换标后新箱唛',
   id bigint NOT NULL COMMENT '退货库存箱ID',
-  customer_id varchar(128) COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '客户ID和隔离键',
-  overseas_warehouse_id varchar(128) COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '海外仓ID',
+  customer_id varchar(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '客户ID和隔离键',
+  overseas_warehouse_id varchar(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '海外仓ID',
   source_receipt_id bigint DEFAULT NULL COMMENT '来源PDA签收单ID',
   source_batch_no text COLLATE utf8mb4_unicode_ci COMMENT '实际消耗来源签收批次号，多个批次逗号分隔',
   source_return_no text COLLATE utf8mb4_unicode_ci COMMENT '实际消耗来源退货单号，多个单号逗号分隔',
   pallet_code varchar(128) COLLATE utf8mb4_unicode_ci DEFAULT NULL COMMENT '签收时绑定的托盘码',
-  carton_mark varchar(128) COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '退货箱号和箱唛编码',
+  carton_mark varchar(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '退货箱号和箱唛编码',
   fba_carton_mark varchar(255) COLLATE utf8mb4_unicode_ci DEFAULT NULL COMMENT 'FBA箱唛',
   destination_warehouse_code varchar(128) COLLATE utf8mb4_unicode_ci DEFAULT NULL COMMENT '目的仓编码',
   destination_warehouse_name varchar(255) COLLATE utf8mb4_unicode_ci DEFAULT NULL COMMENT '目的仓名称',
@@ -2461,8 +2461,8 @@ CREATE TABLE ll_return_inventory_carton_item (
   id bigint NOT NULL COMMENT '退货库存箱SKU明细ID',
   carton_id bigint NOT NULL COMMENT '退货库存箱ID',
   customer_id varchar(128) COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '客户ID和隔离键',
-  sku_code varchar(128) COLLATE utf8mb4_unicode_ci NOT NULL COMMENT 'SKU编码',
-  product_name_zh varchar(255) COLLATE utf8mb4_unicode_ci DEFAULT NULL COMMENT '中文品名',
+  sku_code varchar(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT 'SKU编码',
+  product_name_zh varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci DEFAULT NULL COMMENT '中文品名',
   quantity bigint NOT NULL COMMENT '该SKU箱内数量',
   relabelled_quantity BIGINT NOT NULL DEFAULT 0 COMMENT '当前SKU已经换标的实物件数，不可二次换标',
   PRIMARY KEY (id),
@@ -2489,9 +2489,9 @@ CREATE TABLE ll_return_inventory_operation (
 
 CREATE TABLE ll_return_order (
   id bigint NOT NULL COMMENT '退货订单ID',
-  customer_id varchar(128) COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '客户ID和隔离键',
+  customer_id varchar(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '客户ID和隔离键',
   return_no varchar(128) COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '退货订单号',
-  overseas_warehouse_id varchar(128) COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '操作海外仓ID',
+  overseas_warehouse_id varchar(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '操作海外仓ID',
   warehouse_contact_name varchar(128) COLLATE utf8mb4_unicode_ci DEFAULT NULL COMMENT '中转仓联系人快照',
   warehouse_contact_phone varchar(64) COLLATE utf8mb4_unicode_ci DEFAULT NULL COMMENT '中转仓联系电话快照',
   customer_reference_no varchar(128) COLLATE utf8mb4_unicode_ci DEFAULT NULL COMMENT '客户参考号',
@@ -2524,8 +2524,8 @@ CREATE TABLE ll_return_order_item (
   id bigint NOT NULL COMMENT '退货预报明细ID',
   return_order_id bigint NOT NULL COMMENT '退货订单ID',
   customer_id varchar(128) COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '客户ID和隔离键',
-  sku_code varchar(128) COLLATE utf8mb4_unicode_ci NOT NULL COMMENT 'SKU编码',
-  product_name_zh varchar(255) COLLATE utf8mb4_unicode_ci DEFAULT NULL COMMENT '中文品名',
+  sku_code varchar(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT 'SKU编码',
+  product_name_zh varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci DEFAULT NULL COMMENT '中文品名',
   expected_quantity bigint NOT NULL COMMENT 'SKU预报数量',
   received_quantity bigint NOT NULL DEFAULT '0' COMMENT 'SKU累计实收数量',
   created_at datetime(3) NOT NULL COMMENT '创建时间',
@@ -2540,7 +2540,7 @@ CREATE TABLE ll_return_receipt (
   id bigint NOT NULL COMMENT 'PDA退货签收单ID',
   return_order_id bigint NOT NULL COMMENT '退货订单ID',
   customer_id varchar(128) COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '客户ID和隔离键',
-  receipt_no varchar(128) COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '签收单号',
+  receipt_no varchar(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '签收单号',
   receipt_batch_no varchar(128) COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '签收批次号',
   pallet_code varchar(128) COLLATE utf8mb4_unicode_ci DEFAULT NULL COMMENT '本次签收绑定的托盘码',
   carton_mark varchar(128) COLLATE utf8mb4_unicode_ci DEFAULT NULL COMMENT '签收生成或绑定的退货箱号',
@@ -2593,7 +2593,7 @@ CREATE TABLE ll_return_receipt_item (
   receipt_id bigint NOT NULL COMMENT 'PDA退货签收单ID',
   return_order_item_id bigint NOT NULL COMMENT '退货预报明细ID',
   customer_id varchar(128) COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '客户ID和隔离键',
-  sku_code varchar(128) COLLATE utf8mb4_unicode_ci NOT NULL COMMENT 'SKU编码',
+  sku_code varchar(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT 'SKU编码',
   received_quantity bigint NOT NULL COMMENT '本次SKU实收数量',
   PRIMARY KEY (id),
   KEY idx_ll_return_receipt_item_receipt (receipt_id),
@@ -4280,17 +4280,17 @@ CREATE TABLE IF NOT EXISTS ll_appointment_impact_history (
 -- SKU 换标实物转换：先执行本增量，再部署服务。不会自动改写存量业务事实。
 CREATE TABLE ll_return_sku_conversion (
  id BIGINT NOT NULL COMMENT 'SKU库存转换记录ID',
- customer_id VARCHAR(128) NOT NULL COMMENT '客户隔离键',
- overseas_warehouse_id VARCHAR(128) NOT NULL COMMENT '操作海外仓ID',
+ customer_id VARCHAR(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '客户隔离键',
+ overseas_warehouse_id VARCHAR(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '操作海外仓ID',
  application_id BIGINT NOT NULL COMMENT '换标申请ID',
- relabel_no VARCHAR(64) NOT NULL COMMENT '换标单号',
+ relabel_no VARCHAR(64) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '换标单号',
  item_id BIGINT NOT NULL COMMENT '换标箱级明细ID',
  round_key VARCHAR(64) NOT NULL COMMENT '作业轮次，退回重做使用新轮次',
  carton_id BIGINT NOT NULL COMMENT '实物来源包裹或箱ID',
  carton_mark VARCHAR(128) NOT NULL COMMENT '完工时仓库识别码',
- old_sku_code VARCHAR(128) NOT NULL COMMENT '换标前SKU',
- new_sku_code VARCHAR(128) NOT NULL COMMENT '换标后SKU',
- product_name_zh VARCHAR(255) NULL COMMENT '中文品名快照',
+ old_sku_code VARCHAR(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '换标前SKU',
+ new_sku_code VARCHAR(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '换标后SKU',
+ product_name_zh VARCHAR(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NULL COMMENT '中文品名快照',
  quantity BIGINT NOT NULL COMMENT '实际完成转换件数',
  status VARCHAR(32) NOT NULL COMMENT 'APPLIED待客户确认/CONFIRMED已确认/REVERSED退回冲回',
  ownership_json LONGTEXT NOT NULL COMMENT '本次转换件数的来源退货单快照，供精确冲回',
@@ -4302,4 +4302,4 @@ CREATE TABLE ll_return_sku_conversion (
  KEY idx_return_sku_conversion_app(customer_id,application_id,status),
  KEY idx_return_sku_conversion_carton(customer_id,carton_id),
  CONSTRAINT chk_return_sku_conversion_quantity CHECK(quantity>0)
-) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='退货实物SKU换标库存转换和冲回记录';
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='退货实物SKU换标库存转换和冲回记录';
diff --git a/lastleg-service/src/main/java/com/baiyue/lastleg/returnreceipt/mapper/ReturnInventoryMovementMapper.java b/lastleg-service/src/main/java/com/baiyue/lastleg/returnreceipt/mapper/ReturnInventoryMovementMapper.java
index 49b39b262..57bda1bff 100644
--- a/lastleg-service/src/main/java/com/baiyue/lastleg/returnreceipt/mapper/ReturnInventoryMovementMapper.java
+++ b/lastleg-service/src/main/java/com/baiyue/lastleg/returnreceipt/mapper/ReturnInventoryMovementMapper.java
@@ -10,19 +10,18 @@ import java.util.List;
 /** Receipt/merge projections plus immutable outbound SKU movements. */
 @Mapper
 public interface ReturnInventoryMovementMapper extends com.baomidou.mybatisplus.core.mapper.BaseMapper<com.baiyue.lastleg.returnreceipt.entity.ReturnInventoryOutboundMovement> {
-    // UNION text projections must not inherit differing source-table or connection collations.
-    String MOVEMENTS = "SELECT CONVERT(o.customer_id USING utf8mb4) COLLATE utf8mb4_unicode_ci customerId,CONVERT(o.overseas_warehouse_id USING utf8mb4) COLLATE utf8mb4_unicode_ci overseasWarehouseId,CONVERT(ri.sku_code USING utf8mb4) COLLATE utf8mb4_unicode_ci skuCode,CONVERT(oi.product_name_zh USING utf8mb4) COLLATE utf8mb4_unicode_ci productNameZh," +
-        "CONVERT('RECEIPT' USING utf8mb4) COLLATE utf8mb4_unicode_ci movementType,CONVERT(r.receipt_no USING utf8mb4) COLLATE utf8mb4_unicode_ci referenceNo,ri.received_quantity totalDelta,ri.received_quantity availableDelta,r.signed_at occurredAt " +
+    String MOVEMENTS = "SELECT o.customer_id customerId,o.overseas_warehouse_id overseasWarehouseId,ri.sku_code skuCode,oi.product_name_zh productNameZh," +
+        "'RECEIPT' movementType,r.receipt_no referenceNo,ri.received_quantity totalDelta,ri.received_quantity availableDelta,r.signed_at occurredAt " +
         "FROM ll_return_receipt r JOIN ll_return_order o ON o.id=r.return_order_id JOIN ll_return_receipt_item ri ON ri.receipt_id=r.id " +
         "JOIN ll_return_order_item oi ON oi.id=ri.return_order_item_id " +
-        "UNION ALL SELECT CONVERT(c.customer_id USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT(c.overseas_warehouse_id USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT(i.sku_code USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT(i.product_name_zh USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT('MERGE' USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT(c.carton_mark USING utf8mb4) COLLATE utf8mb4_unicode_ci,0,-i.quantity,c.created_at " +
+        "UNION ALL SELECT c.customer_id,c.overseas_warehouse_id,i.sku_code,i.product_name_zh,'MERGE',c.carton_mark,0,-i.quantity,c.created_at " +
         "FROM ll_return_inventory_carton c JOIN ll_return_inventory_carton_item i ON i.carton_id=c.id WHERE c.source_batch_no='MERGED'" +
-        " UNION ALL SELECT CONVERT(customer_id USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT(overseas_warehouse_id USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT(sku_code USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT(product_name_zh USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT('OUTBOUND' USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT(outbound_no USING utf8mb4) COLLATE utf8mb4_unicode_ci," +
+        " UNION ALL SELECT customer_id,overseas_warehouse_id,sku_code,product_name_zh,'OUTBOUND',outbound_no," +
         "-quantity,-quantity,occurred_at FROM ll_return_inventory_outbound_movement" +
-        " UNION ALL SELECT CONVERT(customer_id USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT(overseas_warehouse_id USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT(old_sku_code USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT(product_name_zh USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT('SKU_CONVERSION_OUT' USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT(relabel_no USING utf8mb4) COLLATE utf8mb4_unicode_ci,-quantity,-quantity,completed_at FROM ll_return_sku_conversion" +
-        " UNION ALL SELECT CONVERT(customer_id USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT(overseas_warehouse_id USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT(new_sku_code USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT(product_name_zh USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT('SKU_CONVERSION_IN' USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT(relabel_no USING utf8mb4) COLLATE utf8mb4_unicode_ci,quantity,quantity,completed_at FROM ll_return_sku_conversion" +
-        " UNION ALL SELECT CONVERT(customer_id USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT(overseas_warehouse_id USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT(old_sku_code USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT(product_name_zh USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT('SKU_CONVERSION_REVERSE_IN' USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT(relabel_no USING utf8mb4) COLLATE utf8mb4_unicode_ci,quantity,quantity,reversed_at FROM ll_return_sku_conversion WHERE status='REVERSED'" +
-        " UNION ALL SELECT CONVERT(customer_id USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT(overseas_warehouse_id USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT(new_sku_code USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT(product_name_zh USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT('SKU_CONVERSION_REVERSE_OUT' USING utf8mb4) COLLATE utf8mb4_unicode_ci,CONVERT(relabel_no USING utf8mb4) COLLATE utf8mb4_unicode_ci,-quantity,-quantity,reversed_at FROM ll_return_sku_conversion WHERE status='REVERSED'";
+        " UNION ALL SELECT customer_id,overseas_warehouse_id,old_sku_code,product_name_zh,'SKU_CONVERSION_OUT',relabel_no,-quantity,-quantity,completed_at FROM ll_return_sku_conversion" +
+        " UNION ALL SELECT customer_id,overseas_warehouse_id,new_sku_code,product_name_zh,'SKU_CONVERSION_IN',relabel_no,quantity,quantity,completed_at FROM ll_return_sku_conversion" +
+        " UNION ALL SELECT customer_id,overseas_warehouse_id,old_sku_code,product_name_zh,'SKU_CONVERSION_REVERSE_IN',relabel_no,quantity,quantity,reversed_at FROM ll_return_sku_conversion WHERE status='REVERSED'" +
+        " UNION ALL SELECT customer_id,overseas_warehouse_id,new_sku_code,product_name_zh,'SKU_CONVERSION_REVERSE_OUT',relabel_no,-quantity,-quantity,reversed_at FROM ll_return_sku_conversion WHERE status='REVERSED'";
 
     @Select("<script>SELECT COUNT(*) FROM (" + MOVEMENTS + ") m WHERE 1=1 " +
         "<if test='customerId != null and customerId != \"\"'>AND m.customerId=#{customerId} </if>" +
diff --git a/lastleg-service/src/main/resources/db/lastleg.sql b/lastleg-service/src/main/resources/db/lastleg.sql
index e3c0bd3fe..bf6542e1a 100644
--- a/lastleg-service/src/main/resources/db/lastleg.sql
+++ b/lastleg-service/src/main/resources/db/lastleg.sql
@@ -2962,9 +2962,9 @@ CREATE TABLE IF NOT EXISTS ll_destuff_pallet_cost_allocation (
 -- 客户退货预报、PDA 签收与仓储费起算批次
 CREATE TABLE IF NOT EXISTS ll_return_order (
  -- need_relabel is added below for existing deployments
- id BIGINT NOT NULL COMMENT '退货订单ID', customer_id VARCHAR(128) NOT NULL COMMENT '客户ID和隔离键', return_no VARCHAR(128) NOT NULL COMMENT '退货订单号', overseas_warehouse_id VARCHAR(128) NOT NULL COMMENT '操作海外仓ID', warehouse_contact_name VARCHAR(128) NULL COMMENT '中转仓联系人快照', warehouse_contact_phone VARCHAR(64) NULL COMMENT '中转仓联系电话快照', customer_reference_no VARCHAR(128) NULL COMMENT '客户参考号', lastleg_order_id BIGINT NULL COMMENT '尾程订单ID', lastleg_order_no VARCHAR(32) NULL COMMENT '尾程订单号', status VARCHAR(32) NOT NULL COMMENT 'PENDING_RECEIPT、PARTIALLY_RECEIVED或COMPLETED', expected_sku_types INT NOT NULL COMMENT '预报SKU种类数', expected_quantity BIGINT NOT NULL COMMENT '预报总数量', received_quantity BIGINT NOT NULL DEFAULT 0 COMMENT '累计实收总数量', remark VARCHAR(1000) NULL COMMENT '客户备注', idempotency_key VARCHAR(255) NOT NULL COMMENT '创建幂等键', request_hash CHAR(64) NOT NULL COMMENT '创建请求SHA-256', created_by VARCHAR(128) NULL COMMENT '创建操作人ID', created_at DATETIME(3) NOT NULL COMMENT '创建时间', updated_at DATETIME(3) NOT NULL COMMENT '最后更新时间',
+ id BIGINT NOT NULL COMMENT '退货订单ID', customer_id VARCHAR(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '客户ID和隔离键', return_no VARCHAR(128) NOT NULL COMMENT '退货订单号', overseas_warehouse_id VARCHAR(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '操作海外仓ID', warehouse_contact_name VARCHAR(128) NULL COMMENT '中转仓联系人快照', warehouse_contact_phone VARCHAR(64) NULL COMMENT '中转仓联系电话快照', customer_reference_no VARCHAR(128) NULL COMMENT '客户参考号', lastleg_order_id BIGINT NULL COMMENT '尾程订单ID', lastleg_order_no VARCHAR(32) NULL COMMENT '尾程订单号', status VARCHAR(32) NOT NULL COMMENT 'PENDING_RECEIPT、PARTIALLY_RECEIVED或COMPLETED', expected_sku_types INT NOT NULL COMMENT '预报SKU种类数', expected_quantity BIGINT NOT NULL COMMENT '预报总数量', received_quantity BIGINT NOT NULL DEFAULT 0 COMMENT '累计实收总数量', remark VARCHAR(1000) NULL COMMENT '客户备注', idempotency_key VARCHAR(255) NOT NULL COMMENT '创建幂等键', request_hash CHAR(64) NOT NULL COMMENT '创建请求SHA-256', created_by VARCHAR(128) NULL COMMENT '创建操作人ID', created_at DATETIME(3) NOT NULL COMMENT '创建时间', updated_at DATETIME(3) NOT NULL COMMENT '最后更新时间',
  PRIMARY KEY(id), UNIQUE KEY uk_ll_return_order_customer_no(customer_id,return_no), UNIQUE KEY uk_ll_return_order_customer_key(customer_id,idempotency_key), KEY idx_ll_return_order_warehouse_status(overseas_warehouse_id,status,created_at), CONSTRAINT chk_ll_return_order_quantity CHECK(expected_sku_types>0 AND expected_quantity>0 AND received_quantity>=0 AND received_quantity<=expected_quantity)
-) ENGINE=InnoDB COMMENT='客户退货订单及SKU实收汇总';
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='客户退货订单及SKU实收汇总';
 SET @ll_return_order_need_relabel = (SELECT IF(EXISTS (SELECT 1 FROM information_schema.columns WHERE table_schema=DATABASE() AND table_name='ll_return_order' AND column_name='need_relabel'), 'SELECT 1', 'ALTER TABLE ll_return_order ADD COLUMN need_relabel TINYINT(1) NOT NULL DEFAULT 0 COMMENT ''是否需要换标'' AFTER customer_reference_no')); PREPARE stmt FROM @ll_return_order_need_relabel; EXECUTE stmt; DEALLOCATE PREPARE stmt;
 SET @ddl = (SELECT IF(EXISTS (SELECT 1 FROM information_schema.columns WHERE table_schema=DATABASE() AND table_name='ll_return_order' AND column_name='lastleg_order_id'), 'SELECT 1', 'ALTER TABLE ll_return_order ADD COLUMN lastleg_order_id BIGINT NULL COMMENT ''尾程订单ID'' AFTER customer_reference_no')); PREPARE stmt FROM @ddl; EXECUTE stmt; DEALLOCATE PREPARE stmt;
 SET @ddl = (SELECT IF(EXISTS (SELECT 1 FROM information_schema.columns WHERE table_schema=DATABASE() AND table_name='ll_return_order' AND column_name='lastleg_order_no'), 'SELECT 1', 'ALTER TABLE ll_return_order ADD COLUMN lastleg_order_no VARCHAR(32) NULL COMMENT ''尾程订单号'' AFTER lastleg_order_id')); PREPARE stmt FROM @ddl; EXECUTE stmt; DEALLOCATE PREPARE stmt;
@@ -2974,14 +2974,14 @@ SET @ddl = (SELECT IF(EXISTS (SELECT 1 FROM information_schema.columns WHERE tab
 SET @ddl = (SELECT IF(EXISTS (SELECT 1 FROM information_schema.columns WHERE table_schema=DATABASE() AND table_name='ll_return_order' AND column_name='relabel_no'), 'SELECT 1', 'ALTER TABLE ll_return_order ADD COLUMN relabel_no VARCHAR(64) NULL COMMENT ''绑定换标单号'' AFTER relabel_application_id')); PREPARE stmt FROM @ddl; EXECUTE stmt; DEALLOCATE PREPARE stmt;
 SET @ddl = (SELECT IF(EXISTS (SELECT 1 FROM information_schema.columns WHERE table_schema=DATABASE() AND table_name='ll_return_order' AND column_name='relabel_status'), 'SELECT 1', 'ALTER TABLE ll_return_order ADD COLUMN relabel_status VARCHAR(32) NULL COMMENT ''换标状态'' AFTER relabel_no')); PREPARE stmt FROM @ddl; EXECUTE stmt; DEALLOCATE PREPARE stmt;
 CREATE TABLE IF NOT EXISTS ll_return_order_item (
- id BIGINT NOT NULL COMMENT '退货预报明细ID', return_order_id BIGINT NOT NULL COMMENT '退货订单ID', customer_id VARCHAR(128) NOT NULL COMMENT '客户ID和隔离键', sku_code VARCHAR(128) NOT NULL COMMENT 'SKU编码', product_name_zh VARCHAR(255) NULL COMMENT '中文品名', expected_quantity BIGINT NOT NULL COMMENT 'SKU预报数量', received_quantity BIGINT NOT NULL DEFAULT 0 COMMENT 'SKU累计实收数量', created_at DATETIME(3) NOT NULL COMMENT '创建时间', updated_at DATETIME(3) NOT NULL COMMENT '最后更新时间',
+ id BIGINT NOT NULL COMMENT '退货预报明细ID', return_order_id BIGINT NOT NULL COMMENT '退货订单ID', customer_id VARCHAR(128) NOT NULL COMMENT '客户ID和隔离键', sku_code VARCHAR(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT 'SKU编码', product_name_zh VARCHAR(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NULL COMMENT '中文品名', expected_quantity BIGINT NOT NULL COMMENT 'SKU预报数量', received_quantity BIGINT NOT NULL DEFAULT 0 COMMENT 'SKU累计实收数量', created_at DATETIME(3) NOT NULL COMMENT '创建时间', updated_at DATETIME(3) NOT NULL COMMENT '最后更新时间',
  PRIMARY KEY(id), UNIQUE KEY uk_ll_return_item_order_sku(return_order_id,sku_code), KEY idx_ll_return_item_sku(sku_code,received_quantity), CONSTRAINT chk_ll_return_item_quantity CHECK(expected_quantity>0 AND received_quantity>=0 AND received_quantity<=expected_quantity)
-) ENGINE=InnoDB COMMENT='客户退货订单的SKU预报与实收明细';
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='客户退货订单的SKU预报与实收明细';
 CREATE TABLE IF NOT EXISTS ll_return_receipt (
  original_packaging TINYINT(1) NULL COMMENT '是否使用原箱原包装', measurement_source VARCHAR(32) NULL COMMENT '尺寸重量来源',
- id BIGINT NOT NULL COMMENT 'PDA退货签收单ID', return_order_id BIGINT NOT NULL COMMENT '退货订单ID', customer_id VARCHAR(128) NOT NULL COMMENT '客户ID和隔离键', receipt_no VARCHAR(128) NOT NULL COMMENT '签收单号', receipt_batch_no VARCHAR(128) NOT NULL COMMENT '签收批次号', tracking_no VARCHAR(128) NULL COMMENT '本次签收包裹的可选快递单号', bound_by VARCHAR(16) NOT NULL COMMENT '开始签收方式，RETURN_NO退货单号或SKU候选', status VARCHAR(32) NOT NULL COMMENT '签收状态，当前SIGNED', received_quantity BIGINT NOT NULL COMMENT '本次实收数量', operator_id VARCHAR(128) NOT NULL COMMENT 'PDA操作人ID', operator_name VARCHAR(128) NULL COMMENT 'PDA操作人名称', idempotency_key VARCHAR(255) NOT NULL COMMENT 'PDA确认幂等键', request_hash CHAR(64) NOT NULL COMMENT 'PDA确认请求SHA-256', signed_at DATETIME(3) NOT NULL COMMENT '签收时间', created_at DATETIME(3) NOT NULL COMMENT '创建时间',
+ id BIGINT NOT NULL COMMENT 'PDA退货签收单ID', return_order_id BIGINT NOT NULL COMMENT '退货订单ID', customer_id VARCHAR(128) NOT NULL COMMENT '客户ID和隔离键', receipt_no VARCHAR(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '签收单号', receipt_batch_no VARCHAR(128) NOT NULL COMMENT '签收批次号', tracking_no VARCHAR(128) NULL COMMENT '本次签收包裹的可选快递单号', bound_by VARCHAR(16) NOT NULL COMMENT '开始签收方式，RETURN_NO退货单号或SKU候选', status VARCHAR(32) NOT NULL COMMENT '签收状态，当前SIGNED', received_quantity BIGINT NOT NULL COMMENT '本次实收数量', operator_id VARCHAR(128) NOT NULL COMMENT 'PDA操作人ID', operator_name VARCHAR(128) NULL COMMENT 'PDA操作人名称', idempotency_key VARCHAR(255) NOT NULL COMMENT 'PDA确认幂等键', request_hash CHAR(64) NOT NULL COMMENT 'PDA确认请求SHA-256', signed_at DATETIME(3) NOT NULL COMMENT '签收时间', created_at DATETIME(3) NOT NULL COMMENT '创建时间',
  PRIMARY KEY(id), UNIQUE KEY uk_ll_return_receipt_no(receipt_no), UNIQUE KEY uk_ll_return_receipt_batch(receipt_batch_no), UNIQUE KEY uk_ll_return_receipt_operator_key(operator_id,idempotency_key), KEY idx_ll_return_receipt_order(return_order_id,signed_at), CONSTRAINT chk_ll_return_receipt_quantity CHECK(received_quantity>0), CONSTRAINT chk_ll_return_receipt_bound CHECK(bound_by IN('RETURN_NO','SKU'))
-) ENGINE=InnoDB COMMENT='PDA退货实收签收事实';
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='PDA退货实收签收事实';
 
 -- 已创建开发库升级为“客户只预报 SKU，快递单号仅属于签收批次”的最终模型。
 SET @ll_return_item_drop_tracking_order_sku = (SELECT IF(COUNT(*) > 0, 'ALTER TABLE ll_return_order_item DROP INDEX uk_ll_return_item_order_tracking_sku', 'SELECT 1') FROM information_schema.statistics WHERE table_schema=DATABASE() AND table_name='ll_return_order_item' AND index_name='uk_ll_return_item_order_tracking_sku');
@@ -3024,9 +3024,9 @@ PREPARE ll_return_receipt_add_measurement_facts_stmt FROM @ll_return_receipt_add
 SET @ll_return_receipt_add_measurement_facts = (SELECT IF(COUNT(*)=0, 'ALTER TABLE ll_return_receipt ADD COLUMN measurement_source VARCHAR(32) NULL COMMENT ''尺寸重量来源'' AFTER original_packaging', 'SELECT 1') FROM information_schema.columns WHERE table_schema=DATABASE() AND table_name='ll_return_receipt' AND column_name='measurement_source');
 PREPARE ll_return_receipt_add_measurement_facts_stmt FROM @ll_return_receipt_add_measurement_facts; EXECUTE ll_return_receipt_add_measurement_facts_stmt; DEALLOCATE PREPARE ll_return_receipt_add_measurement_facts_stmt;
 CREATE TABLE IF NOT EXISTS ll_return_receipt_item (
- id BIGINT NOT NULL COMMENT '签收SKU明细ID', receipt_id BIGINT NOT NULL COMMENT 'PDA退货签收单ID', return_order_item_id BIGINT NOT NULL COMMENT '退货预报明细ID', customer_id VARCHAR(128) NOT NULL COMMENT '客户ID和隔离键', sku_code VARCHAR(128) NOT NULL COMMENT 'SKU编码', received_quantity BIGINT NOT NULL COMMENT '本次SKU实收数量',
+ id BIGINT NOT NULL COMMENT '签收SKU明细ID', receipt_id BIGINT NOT NULL COMMENT 'PDA退货签收单ID', return_order_item_id BIGINT NOT NULL COMMENT '退货预报明细ID', customer_id VARCHAR(128) NOT NULL COMMENT '客户ID和隔离键', sku_code VARCHAR(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT 'SKU编码', received_quantity BIGINT NOT NULL COMMENT '本次SKU实收数量',
  PRIMARY KEY(id), KEY idx_ll_return_receipt_item_receipt(receipt_id), KEY idx_ll_return_receipt_item_order_item(return_order_item_id), CONSTRAINT chk_ll_return_receipt_item_quantity CHECK(received_quantity>0)
-) ENGINE=InnoDB COMMENT='PDA退货签收SKU实际数量明细';
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='PDA退货签收SKU实际数量明细';
 CREATE TABLE IF NOT EXISTS ll_return_receipt_batch (
  id BIGINT NOT NULL COMMENT '退货仓储计费批次ID', return_order_id BIGINT NOT NULL COMMENT '退货订单ID', receipt_id BIGINT NOT NULL COMMENT 'PDA退货签收单ID', customer_id VARCHAR(128) NOT NULL COMMENT '客户ID和隔离键', batch_no VARCHAR(128) NOT NULL COMMENT '签收批次号', overseas_warehouse_id VARCHAR(128) NOT NULL COMMENT '操作海外仓ID', storage_billing_status VARCHAR(32) NOT NULL COMMENT '仓储计费状态，初始PENDING_PRICING', storage_started_at DATETIME(3) NOT NULL COMMENT '仓储计费起算时间', created_at DATETIME(3) NOT NULL COMMENT '创建时间',
  PRIMARY KEY(id), UNIQUE KEY uk_ll_return_batch_no(batch_no), UNIQUE KEY uk_ll_return_batch_receipt(receipt_id), KEY idx_ll_return_batch_billing(customer_id,overseas_warehouse_id,storage_billing_status,storage_started_at)
@@ -3038,9 +3038,9 @@ PREPARE return_receipt_carton_mark_stmt FROM @ddl; EXECUTE return_receipt_carton
 CREATE TABLE IF NOT EXISTS ll_return_inventory_carton (
  original_packaging TINYINT(1) NULL COMMENT '是否使用原箱原包装',
  new_carton_mark VARCHAR(255) NULL COMMENT '换标后新箱唛',
- id BIGINT NOT NULL COMMENT '退货库存箱ID', customer_id VARCHAR(128) NOT NULL COMMENT '客户ID和隔离键', overseas_warehouse_id VARCHAR(128) NOT NULL COMMENT '海外仓ID', source_receipt_id BIGINT NULL COMMENT '来源PDA签收单ID', source_batch_no VARCHAR(128) NULL COMMENT '来源签收批次号', carton_mark VARCHAR(128) NOT NULL COMMENT '退货箱号和箱唛编码', status VARCHAR(32) NOT NULL COMMENT 'AVAILABLE可用或MERGED已合箱', sku_types INT NOT NULL COMMENT '箱内SKU种类数', total_quantity BIGINT NOT NULL COMMENT '箱内总件数', length DECIMAL(12,3) NULL COMMENT '箱长CM', width DECIMAL(12,3) NULL COMMENT '箱宽CM', height DECIMAL(12,3) NULL COMMENT '箱高CM', weight DECIMAL(12,3) NULL COMMENT '箱重KG', created_at DATETIME(3) NOT NULL COMMENT '创建时间', updated_at DATETIME(3) NOT NULL COMMENT '最后更新时间', merged_at DATETIME(3) NULL COMMENT '合箱完成时间',
+ id BIGINT NOT NULL COMMENT '退货库存箱ID', customer_id VARCHAR(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '客户ID和隔离键', overseas_warehouse_id VARCHAR(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '海外仓ID', source_receipt_id BIGINT NULL COMMENT '来源PDA签收单ID', source_batch_no VARCHAR(128) NULL COMMENT '来源签收批次号', carton_mark VARCHAR(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '退货箱号和箱唛编码', status VARCHAR(32) NOT NULL COMMENT 'AVAILABLE可用或MERGED已合箱', sku_types INT NOT NULL COMMENT '箱内SKU种类数', total_quantity BIGINT NOT NULL COMMENT '箱内总件数', length DECIMAL(12,3) NULL COMMENT '箱长CM', width DECIMAL(12,3) NULL COMMENT '箱宽CM', height DECIMAL(12,3) NULL COMMENT '箱高CM', weight DECIMAL(12,3) NULL COMMENT '箱重KG', created_at DATETIME(3) NOT NULL COMMENT '创建时间', updated_at DATETIME(3) NOT NULL COMMENT '最后更新时间', merged_at DATETIME(3) NULL COMMENT '合箱完成时间',
  PRIMARY KEY(id), UNIQUE KEY uk_ll_return_inventory_carton_mark(carton_mark), UNIQUE KEY uk_ll_return_inventory_carton_receipt(source_receipt_id), KEY idx_ll_return_inventory_carton_customer(customer_id,overseas_warehouse_id,status,created_at), CONSTRAINT chk_ll_return_inventory_carton_quantity CHECK((status IN('AVAILABLE','RELABEL_PENDING','OUTBOUNDED','DISCARD_PENDING') AND sku_types>0 AND total_quantity>0) OR (status IN('MERGED','DISCARDED') AND sku_types=0 AND total_quantity=0)), CONSTRAINT chk_ll_return_inventory_carton_status CHECK(status IN('AVAILABLE','RELABEL_PENDING','MERGED','OUTBOUNDED','DISCARD_PENDING','DISCARDED'))
-) ENGINE=InnoDB COMMENT='退货实物库存箱及箱唛';
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='退货实物库存箱及箱唛';
 SET @ll_return_carton_add_pallet = (SELECT IF(EXISTS (SELECT 1 FROM information_schema.columns WHERE table_schema=DATABASE() AND table_name='ll_return_inventory_carton' AND column_name='pallet_code'), 'SELECT 1', 'ALTER TABLE ll_return_inventory_carton ADD COLUMN pallet_code VARCHAR(128) NULL COMMENT ''签收时绑定的托盘码'' AFTER source_batch_no'));
 PREPARE ll_return_carton_add_pallet_stmt FROM @ll_return_carton_add_pallet; EXECUTE ll_return_carton_add_pallet_stmt; DEALLOCATE PREPARE ll_return_carton_add_pallet_stmt;
 SET @ll_return_carton_add_original_packaging = (SELECT IF(COUNT(*)=0, 'ALTER TABLE ll_return_inventory_carton ADD COLUMN original_packaging TINYINT(1) NULL COMMENT ''是否使用原箱原包装'' AFTER weight', 'SELECT 1') FROM information_schema.columns WHERE table_schema=DATABASE() AND table_name='ll_return_inventory_carton' AND column_name='original_packaging');
@@ -3063,20 +3063,20 @@ SET @ddl = (SELECT IF(EXISTS (SELECT 1 FROM information_schema.columns WHERE tab
 SET @ddl = (SELECT IF(EXISTS (SELECT 1 FROM information_schema.columns WHERE table_schema=DATABASE() AND table_name='ll_return_inventory_carton' AND column_name='relabel_status'), 'SELECT 1', 'ALTER TABLE ll_return_inventory_carton ADD COLUMN relabel_status VARCHAR(32) NULL COMMENT ''换标状态'' AFTER relabel_no')); PREPARE stmt FROM @ddl; EXECUTE stmt; DEALLOCATE PREPARE stmt;
 SET @ddl = (SELECT IF(EXISTS (SELECT 1 FROM information_schema.columns WHERE table_schema=DATABASE() AND table_name='ll_return_inventory_carton' AND column_name='relabel_completed_at'), 'SELECT 1', 'ALTER TABLE ll_return_inventory_carton ADD COLUMN relabel_completed_at DATETIME(3) NULL COMMENT ''换标完成时间'' AFTER relabel_status')); PREPARE stmt FROM @ddl; EXECUTE stmt; DEALLOCATE PREPARE stmt;
 CREATE TABLE IF NOT EXISTS ll_return_inventory_carton_item (
- id BIGINT NOT NULL COMMENT '退货库存箱SKU明细ID', carton_id BIGINT NOT NULL COMMENT '退货库存箱ID', customer_id VARCHAR(128) NOT NULL COMMENT '客户ID和隔离键', sku_code VARCHAR(128) NOT NULL COMMENT 'SKU编码', product_name_zh VARCHAR(255) NULL COMMENT '中文品名', quantity BIGINT NOT NULL COMMENT '该SKU箱内数量',
+ id BIGINT NOT NULL COMMENT '退货库存箱SKU明细ID', carton_id BIGINT NOT NULL COMMENT '退货库存箱ID', customer_id VARCHAR(128) NOT NULL COMMENT '客户ID和隔离键', sku_code VARCHAR(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT 'SKU编码', product_name_zh VARCHAR(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NULL COMMENT '中文品名', quantity BIGINT NOT NULL COMMENT '该SKU箱内数量',
  PRIMARY KEY(id), UNIQUE KEY uk_ll_return_inventory_carton_item(carton_id,sku_code), KEY idx_ll_return_inventory_carton_item_customer(customer_id,sku_code), CONSTRAINT chk_ll_return_inventory_carton_item_quantity CHECK(quantity>0)
-) ENGINE=InnoDB COMMENT='退货库存箱内SKU和数量';
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='退货库存箱内SKU和数量';
 -- 退货出库按SKU固化扣减前后快照，与PDA拣货同事务提交；不修改历史箱内容。
 CREATE TABLE IF NOT EXISTS ll_return_inventory_outbound_movement (
  id BIGINT NOT NULL COMMENT '退货出库SKU流水ID',
  outbound_pick_id BIGINT NOT NULL COMMENT '同事务PDA出库拣货记录ID',
- customer_id VARCHAR(128) NOT NULL COMMENT '库存所属客户ID和隔离键',
- overseas_warehouse_id VARCHAR(128) NOT NULL COMMENT '实际出库海外仓ID',
+ customer_id VARCHAR(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '库存所属客户ID和隔离键',
+ overseas_warehouse_id VARCHAR(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '实际出库海外仓ID',
  carton_id BIGINT NOT NULL COMMENT '真实退货库存箱ID',
  carton_mark VARCHAR(128) NOT NULL COMMENT '冻结的真实退货箱业务码',
- outbound_no VARCHAR(64) NOT NULL COMMENT '本次退货出库业务单号',
- sku_code VARCHAR(128) NOT NULL COMMENT '本次出库SKU编码快照',
- product_name_zh VARCHAR(255) NULL COMMENT '中文品名快照',
+ outbound_no VARCHAR(64) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '本次退货出库业务单号',
+ sku_code VARCHAR(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '本次出库SKU编码快照',
+ product_name_zh VARCHAR(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NULL COMMENT '中文品名快照',
  quantity BIGINT NOT NULL COMMENT '本箱该SKU实际出库件数，始终为正',
  total_before BIGINT NOT NULL COMMENT '客户仓SKU出库前实物总数量',
  total_after BIGINT NOT NULL COMMENT '客户仓SKU出库后实物总数量',
@@ -3092,7 +3092,7 @@ CREATE TABLE IF NOT EXISTS ll_return_inventory_outbound_movement (
  CONSTRAINT chk_ll_return_outbound_movement_delta CHECK(quantity>0 AND total_after>=0 AND available_after>=0
    AND total_before-total_after=quantity AND available_before-available_after=quantity
    AND cartons_after>=0 AND cartons_before-cartons_after IN (0,1) AND total_after>=available_after)
-) ENGINE=InnoDB COMMENT='不可变退货出库SKU库存流水';
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='不可变退货出库SKU库存流水';
 
 CREATE TABLE IF NOT EXISTS ll_return_inventory_balance (
  id BIGINT NOT NULL COMMENT '退货库存余额ID', customer_id VARCHAR(128) NOT NULL COMMENT '客户ID和隔离键', overseas_warehouse_id VARCHAR(128) NOT NULL COMMENT '海外仓ID', sku_code VARCHAR(128) NOT NULL COMMENT 'SKU编码', product_name_zh VARCHAR(255) NULL COMMENT '中文品名', total_quantity BIGINT NOT NULL DEFAULT 0 COMMENT '实物总库存，仅实际出库扣减', available_quantity BIGINT NOT NULL COMMENT '未合箱可用上架数量', carton_quantity BIGINT NOT NULL COMMENT '包含该SKU的可用箱数', created_at DATETIME(3) NOT NULL COMMENT '创建时间', updated_at DATETIME(3) NOT NULL COMMENT '最后更新时间',
@@ -3602,17 +3602,17 @@ SET @return_sku_ddl = (SELECT IF(EXISTS(SELECT 1 FROM information_schema.columns
 PREPARE return_sku_stmt FROM @return_sku_ddl; EXECUTE return_sku_stmt; DEALLOCATE PREPARE return_sku_stmt;
 CREATE TABLE IF NOT EXISTS ll_return_sku_conversion (
  id BIGINT NOT NULL COMMENT 'SKU库存转换记录ID',
- customer_id VARCHAR(128) NOT NULL COMMENT '客户隔离键',
- overseas_warehouse_id VARCHAR(128) NOT NULL COMMENT '操作海外仓ID',
+ customer_id VARCHAR(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '客户隔离键',
+ overseas_warehouse_id VARCHAR(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '操作海外仓ID',
  application_id BIGINT NOT NULL COMMENT '换标申请ID',
- relabel_no VARCHAR(64) NOT NULL COMMENT '换标单号',
+ relabel_no VARCHAR(64) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '换标单号',
  item_id BIGINT NOT NULL COMMENT '换标箱级明细ID',
  round_key VARCHAR(64) NOT NULL COMMENT '作业轮次，退回重做使用新轮次',
  carton_id BIGINT NOT NULL COMMENT '实物来源包裹或箱ID',
  carton_mark VARCHAR(128) NOT NULL COMMENT '完工时仓库识别码',
- old_sku_code VARCHAR(128) NOT NULL COMMENT '换标前SKU',
- new_sku_code VARCHAR(128) NOT NULL COMMENT '换标后SKU',
- product_name_zh VARCHAR(255) NULL COMMENT '中文品名快照',
+ old_sku_code VARCHAR(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '换标前SKU',
+ new_sku_code VARCHAR(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '换标后SKU',
+ product_name_zh VARCHAR(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NULL COMMENT '中文品名快照',
  quantity BIGINT NOT NULL COMMENT '实际完成转换件数',
  status VARCHAR(32) NOT NULL COMMENT 'APPLIED待客户确认/CONFIRMED已确认/REVERSED退回冲回',
  ownership_json LONGTEXT NOT NULL COMMENT '本次转换件数的来源退货单快照，供精确冲回',
@@ -3624,7 +3624,7 @@ CREATE TABLE IF NOT EXISTS ll_return_sku_conversion (
  KEY idx_return_sku_conversion_app(customer_id,application_id,status),
  KEY idx_return_sku_conversion_carton(customer_id,carton_id),
  CONSTRAINT chk_return_sku_conversion_quantity CHECK(quantity>0)
-) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='退货实物SKU换标库存转换和冲回记录';
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='退货实物SKU换标库存转换和冲回记录';
 
 
 -- 平台自营领星统计：独立事实与不可变发布版本；仅空库初始化，不自动执行。
diff --git a/lastleg-service/src/main/resources/db/return-sku-conversion.sql b/lastleg-service/src/main/resources/db/return-sku-conversion.sql
index a3fe0860b..0a22307ed 100644
--- a/lastleg-service/src/main/resources/db/return-sku-conversion.sql
+++ b/lastleg-service/src/main/resources/db/return-sku-conversion.sql
@@ -3,17 +3,17 @@ SET @return_sku_ddl = (SELECT IF(EXISTS(SELECT 1 FROM information_schema.columns
 PREPARE return_sku_stmt FROM @return_sku_ddl; EXECUTE return_sku_stmt; DEALLOCATE PREPARE return_sku_stmt;
 CREATE TABLE IF NOT EXISTS ll_return_sku_conversion (
  id BIGINT NOT NULL COMMENT 'SKU库存转换记录ID',
- customer_id VARCHAR(128) NOT NULL COMMENT '客户隔离键',
- overseas_warehouse_id VARCHAR(128) NOT NULL COMMENT '操作海外仓ID',
+ customer_id VARCHAR(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '客户隔离键',
+ overseas_warehouse_id VARCHAR(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '操作海外仓ID',
  application_id BIGINT NOT NULL COMMENT '换标申请ID',
- relabel_no VARCHAR(64) NOT NULL COMMENT '换标单号',
+ relabel_no VARCHAR(64) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '换标单号',
  item_id BIGINT NOT NULL COMMENT '换标箱级明细ID',
  round_key VARCHAR(64) NOT NULL COMMENT '作业轮次，退回重做使用新轮次',
  carton_id BIGINT NOT NULL COMMENT '实物来源包裹或箱ID',
  carton_mark VARCHAR(128) NOT NULL COMMENT '完工时仓库识别码',
- old_sku_code VARCHAR(128) NOT NULL COMMENT '换标前SKU',
- new_sku_code VARCHAR(128) NOT NULL COMMENT '换标后SKU',
- product_name_zh VARCHAR(255) NULL COMMENT '中文品名快照',
+ old_sku_code VARCHAR(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '换标前SKU',
+ new_sku_code VARCHAR(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '换标后SKU',
+ product_name_zh VARCHAR(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NULL COMMENT '中文品名快照',
  quantity BIGINT NOT NULL COMMENT '实际完成转换件数',
  status VARCHAR(32) NOT NULL COMMENT 'APPLIED待客户确认/CONFIRMED已确认/REVERSED退回冲回',
  ownership_json LONGTEXT NOT NULL COMMENT '本次转换件数的来源退货单快照，供精确冲回',
@@ -25,4 +25,4 @@ CREATE TABLE IF NOT EXISTS ll_return_sku_conversion (
  KEY idx_return_sku_conversion_app(customer_id,application_id,status),
  KEY idx_return_sku_conversion_carton(customer_id,carton_id),
  CONSTRAINT chk_return_sku_conversion_quantity CHECK(quantity>0)
-) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='退货实物SKU换标库存转换和冲回记录';
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='退货实物SKU换标库存转换和冲回记录';
diff --git a/lastleg-service/src/test/java/com/baiyue/lastleg/delivery/service/ReturnOutboundPdaPersistenceTest.java b/lastleg-service/src/test/java/com/baiyue/lastleg/delivery/service/ReturnOutboundPdaPersistenceTest.java
index 4c810efe5..793fc2459 100644
--- a/lastleg-service/src/test/java/com/baiyue/lastleg/delivery/service/ReturnOutboundPdaPersistenceTest.java
+++ b/lastleg-service/src/test/java/com/baiyue/lastleg/delivery/service/ReturnOutboundPdaPersistenceTest.java
@@ -58,18 +58,6 @@ class ReturnOutboundPdaPersistenceTest {
         for (Class<?> mapper : List.of(OutboundOrderMapper.class, OutboundPalletItemMapper.class,
                 OutboundPdaTaskMapper.class, OutboundPdaPickMapper.class, DeliveryOrderMapper.class, ReturnInventoryCartonMapper.class,
                 ReturnInventoryCartonItemMapper.class, ReturnInventoryBalanceMapper.class, ReturnInventoryMovementMapper.class)) configuration.addMapper(mapper);
-        // H2 does not implement MySQL charset/collation expressions. Preserve the real
-        // movement query and bindings, removing only those expressions in this H2 fixture.
-        for (String method : List.of("platformCount", "platformPage")) {
-            var statement = configuration.getMappedStatement(ReturnInventoryMovementMapper.class.getName() + "." + method);
-            var mysqlSource = statement.getSqlSource();
-            org.apache.ibatis.mapping.SqlSource h2Source = params -> {
-                var bound = mysqlSource.getBoundSql(params);
-                String sql = bound.getSql().replaceAll("CONVERT\\(([^()]+) USING utf8mb4\\) COLLATE utf8mb4_unicode_ci", "$1");
-                return new org.apache.ibatis.mapping.BoundSql(configuration, sql, bound.getParameterMappings(), params);
-            };
-            ReflectionTestUtils.setField(statement, "sqlSource", h2Source);
-        }
         var factory = new MybatisSqlSessionFactoryBean(); factory.setDataSource(ds); factory.setConfiguration(configuration);
         var session = new SqlSessionTemplate(factory.getObject());
         movementMapper = session.getMapper(ReturnInventoryMovementMapper.class);
diff --git a/lastleg-service/src/test/java/com/baiyue/lastleg/returnreceipt/service/ReturnInventoryMovementSqlTest.java b/lastleg-service/src/test/java/com/baiyue/lastleg/returnreceipt/service/ReturnInventoryMovementSqlTest.java
index b9915e50f..9d044f40b 100644
--- a/lastleg-service/src/test/java/com/baiyue/lastleg/returnreceipt/service/ReturnInventoryMovementSqlTest.java
+++ b/lastleg-service/src/test/java/com/baiyue/lastleg/returnreceipt/service/ReturnInventoryMovementSqlTest.java
@@ -6,24 +6,46 @@ import org.apache.ibatis.session.Configuration;
 import org.junit.jupiter.api.Test;
 
 import java.util.Map;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.List;
+import java.util.regex.Pattern;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertTrue;
 
 class ReturnInventoryMovementSqlTest {
     @Test
-    void everyUnionBranchNormalizesAllSixTextColumns() {
-        String[] branches = ReturnInventoryMovementMapper.MOVEMENTS.split("UNION ALL");
-        assertEquals(7, branches.length);
-        for (String branch : branches) {
-            String projection = branch.substring(0, branch.indexOf("FROM"));
-            assertEquals(6, projection.split("COLLATE utf8mb4_unicode_ci", -1).length - 1, branch);
-            assertEquals(6, projection.split("USING utf8mb4", -1).length - 1, branch);
+    void unionSourceColumnsHaveExplicitMatchingCollationsInBothBaselinesAndMigration() throws Exception {
+        Map<String, List<String>> fields = Map.of(
+                "ll_return_order", List.of("customer_id", "overseas_warehouse_id"),
+                "ll_return_order_item", List.of("sku_code", "product_name_zh"),
+                "ll_return_receipt", List.of("receipt_no"),
+                "ll_return_receipt_item", List.of("sku_code"),
+                "ll_return_inventory_carton", List.of("customer_id", "overseas_warehouse_id", "carton_mark"),
+                "ll_return_inventory_carton_item", List.of("sku_code", "product_name_zh"),
+                "ll_return_inventory_outbound_movement", List.of("customer_id", "overseas_warehouse_id", "sku_code", "product_name_zh", "outbound_no"),
+                "ll_return_sku_conversion", List.of("customer_id", "overseas_warehouse_id", "old_sku_code", "new_sku_code", "product_name_zh", "relabel_no"));
+        for (Path file : List.of(Path.of("src/main/resources/db/lastleg.sql"),
+                Path.of("../deploy/sql/海外区域统一增量-MySQL8.sql"),
+                Path.of("../deploy/sql/migrations/overseas/baiyue_lastleg/V23__align_return_movement_collation.sql"))) {
+            String sql = Files.readString(file);
+            for (var entry : fields.entrySet()) {
+                var block = Pattern.compile("(?s)(?:CREATE TABLE (?:IF NOT EXISTS )?|ALTER TABLE )" + entry.getKey() + "\\b.*?;").matcher(sql);
+                assertTrue(block.find(), file + ": " + entry.getKey());
+                for (String column : entry.getValue()) {
+                    assertTrue(Pattern.compile("(?i)\\b" + column + "\\s+varchar\\(\\d+\\) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci").matcher(block.group()).find(),
+                            file + ": " + entry.getKey() + "." + column);
+                }
+            }
         }
+        String standalone = Files.readString(Path.of("src/main/resources/db/return-sku-conversion.sql"));
+        for (String column : fields.get("ll_return_sku_conversion"))
+            assertTrue(Pattern.compile("\\b" + column + "\\s+VARCHAR\\(\\d+\\) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci").matcher(standalone).find());
     }
 
     @Test
-    void countAndPageShareNormalizedProjectionAndKeepScopeFilters() {
+    void countAndPageKeepOriginalProjectionAndScopeFilters() {
         Configuration configuration = new Configuration();
         new MapperAnnotationBuilder(configuration, ReturnInventoryMovementMapper.class).parse();
         Map<String, Object> params = Map.of("customerId", "CUSTOMER", "warehouseId", "WAREHOUSE",
@@ -32,7 +54,8 @@ class ReturnInventoryMovementSqlTest {
             var boundSql = configuration.getMappedStatement(ReturnInventoryMovementMapper.class.getName() + "." + method)
                     .getBoundSql(params);
             String sql = boundSql.getSql();
-            assertEquals(42, sql.split("COLLATE utf8mb4_unicode_ci", -1).length - 1);
+            assertEquals(7, sql.split("UNION ALL", -1).length);
+            assertTrue(!sql.contains("CONVERT("));
             assertTrue(sql.contains("m.customerId=?"));
             assertTrue(sql.contains("m.overseasWarehouseId=?"));
             assertTrue(sql.contains("m.skuCode LIKE CONCAT('%',?,'%')"));