diff --git a/ccdi-info-collection/src/main/resources/mapper/info/collection/CcdiStaffRecruitmentMapper.xml b/ccdi-info-collection/src/main/resources/mapper/info/collection/CcdiStaffRecruitmentMapper.xml
index 452bf01b..466d3aad 100644
--- a/ccdi-info-collection/src/main/resources/mapper/info/collection/CcdiStaffRecruitmentMapper.xml
+++ b/ccdi-info-collection/src/main/resources/mapper/info/collection/CcdiStaffRecruitmentMapper.xml
@@ -40,10 +40,10 @@
             r.created_by, r.create_time, r.updated_by, r.update_time
         FROM ccdi_staff_recruitment r
         LEFT JOIN (
-            SELECT recruit_id, COUNT(1) AS work_experience_count
+            SELECT recruit_id COLLATE utf8mb4_general_ci AS recruit_id, COUNT(1) AS work_experience_count
             FROM ccdi_staff_recruitment_work
-            GROUP BY recruit_id
-        ) w ON w.recruit_id = r.recruit_id
+            GROUP BY recruit_id COLLATE utf8mb4_general_ci
+        ) w ON w.recruit_id COLLATE utf8mb4_general_ci = r.recruit_id COLLATE utf8mb4_general_ci
         <where>
             <if test="query.recruitName != null and query.recruitName != ''">
                 AND r.recruit_name LIKE CONCAT('%', #{query.recruitName}, '%')
diff --git a/docs/plans/backend/2026-04-22-ccdi-database-default-collation-backend-implementation.md b/docs/plans/backend/2026-04-22-ccdi-database-default-collation-backend-implementation.md
new file mode 100644
index 00000000..ea8a46f2
--- /dev/null
+++ b/docs/plans/backend/2026-04-22-ccdi-database-default-collation-backend-implementation.md
@@ -0,0 +1,39 @@
+# CCDI 数据库默认排序规则修复实施计划
+
+## 保存路径确认
+
+- 路径：`docs/plans/backend/2026-04-22-ccdi-database-default-collation-backend-implementation.md`
+- 归类：后端实施计划
+
+## 目标
+
+- 将 `ccdi` 数据库默认字符集统一为 `utf8mb4`
+- 将 `ccdi` 数据库默认排序规则统一为 `utf8mb4_general_ci`
+
+## 背景
+
+- 当前 `ccdi` 数据库默认排序规则为 `utf8mb4_unicode_ci`。
+- 仓库数据库规范要求业务库默认排序规则统一为 `utf8mb4_general_ci`，避免新建表或新增字符字段继续继承错误默认值。
+
+## 实施步骤
+
+1. 新增数据库增量脚本，执行 `ALTER DATABASE ccdi CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci`。
+2. 使用 `bin/mysql_utf8_exec.sh` 在当前开发库执行脚本。
+3. 查询 `information_schema.SCHEMATA` 回查默认字符集与默认排序规则是否生效。
+4. 补充实施记录，说明变更范围与验证结果。
+
+## 验证命令
+
+```bash
+bin/mysql_utf8_exec.sh sql/migration/2026-04-22-fix-ccdi-database-default-collation.sql
+```
+
+```bash
+mysql ... -e "SELECT SCHEMA_NAME, DEFAULT_CHARACTER_SET_NAME, DEFAULT_COLLATION_NAME FROM information_schema.SCHEMATA WHERE SCHEMA_NAME='ccdi';"
+```
+
+## 完成标准
+
+- `ccdi` 的 `DEFAULT_CHARACTER_SET_NAME` 为 `utf8mb4`
+- `ccdi` 的 `DEFAULT_COLLATION_NAME` 为 `utf8mb4_general_ci`
+- 本次变更已形成实施记录
diff --git a/docs/plans/backend/2026-04-22-staff-recruitment-collation-fix-backend-implementation.md b/docs/plans/backend/2026-04-22-staff-recruitment-collation-fix-backend-implementation.md
new file mode 100644
index 00000000..d6045964
--- /dev/null
+++ b/docs/plans/backend/2026-04-22-staff-recruitment-collation-fix-backend-implementation.md
@@ -0,0 +1,31 @@
+# 员工招聘列表排序规则冲突修复实施计划
+
+## 保存路径确认
+
+- 路径：`docs/plans/backend/2026-04-22-staff-recruitment-collation-fix-backend-implementation.md`
+- 归类：后端实施计划
+
+## 背景
+
+- 员工招聘列表查询执行 `ccdi_staff_recruitment` 与 `ccdi_staff_recruitment_work` 的 `recruit_id` 关联时，报错 `Illegal mix of collations (utf8mb4_0900_ai_ci) and (utf8mb4_general_ci)`。
+- 现有招聘主表已被纳入全库统一排序规则脚本，但历史工作经历子表在建表时未显式声明 `utf8mb4_general_ci`，且未被纳入统一修复脚本，导致在 MySQL 8 环境中可能沿用默认 `utf8mb4_0900_ai_ci`。
+
+## 实施范围
+
+- 后端 MyBatis 查询 XML
+- 招聘相关 SQL 建表脚本
+- 数据库增量迁移脚本
+
+## 实施步骤
+
+1. 修改招聘列表查询 SQL，在 `ccdi_staff_recruitment_work.recruit_id` 聚合与关联时显式使用 `utf8mb4_general_ci`，先恢复查询可用性。
+2. 修正 `2026-04-15-add-staff-recruitment-social-work-summary.sql`，为 `ccdi_staff_recruitment_work` 建表语句补齐 `COLLATE=utf8mb4_general_ci`。
+3. 补充增量脚本，将现有库中的 `ccdi_staff_recruitment_work` 转换为 `utf8mb4_general_ci`。
+4. 更新全库统一排序规则脚本，将该表纳入统一修复范围，避免后续漏执行。
+5. 编译受影响模块，确认 Mapper XML 与资源装配正常。
+
+## 验证要点
+
+- `selectRecruitmentPage` 查询不再因 `recruit_id` 关联报排序规则冲突。
+- `ccdi_staff_recruitment_work` 表级与字符字段排序规则统一为 `utf8mb4_general_ci`。
+- `mvn -pl ccdi-info-collection -am compile` 通过。
diff --git a/docs/reports/implementation/2026-04-22-ccdi-database-default-collation-implementation.md b/docs/reports/implementation/2026-04-22-ccdi-database-default-collation-implementation.md
new file mode 100644
index 00000000..d8659021
--- /dev/null
+++ b/docs/reports/implementation/2026-04-22-ccdi-database-default-collation-implementation.md
@@ -0,0 +1,32 @@
+# CCDI 数据库默认排序规则修复实施记录
+
+## 基本信息
+
+- 日期：2026-04-22
+- 范围：`ccdi` 数据库默认字符集与默认排序规则
+- 关联计划：`docs/plans/backend/2026-04-22-ccdi-database-default-collation-backend-implementation.md`
+
+## 实施内容
+
+- 新增 `sql/migration/2026-04-22-fix-ccdi-database-default-collation.sql`
+- 通过 `ALTER DATABASE ccdi CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci` 修正数据库级默认值
+- 执行后回查 `information_schema.SCHEMATA` 验证默认字符集与默认排序规则
+
+## 验证结果
+
+- 执行前：
+  - `DEFAULT_CHARACTER_SET_NAME = utf8mb4`
+  - `DEFAULT_COLLATION_NAME = utf8mb4_unicode_ci`
+- 执行脚本：
+  `bin/mysql_utf8_exec.sh sql/migration/2026-04-22-fix-ccdi-database-default-collation.sql`
+  结果：PASS
+- 执行后回查：
+  - `DEFAULT_CHARACTER_SET_NAME = utf8mb4`
+  - `DEFAULT_COLLATION_NAME = utf8mb4_general_ci`
+  - `SHOW CREATE DATABASE ccdi` 返回：
+    `CREATE DATABASE \`ccdi\` DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci`
+
+## 说明
+
+- 本次仅修改数据库默认字符集与默认排序规则，不会自动改写已存在表或已有字符字段的排序规则。
+- 已存在对象若仍为其他排序规则，需要通过表级或字段级迁移脚本单独修复。
diff --git a/docs/reports/implementation/2026-04-22-staff-recruitment-collation-fix-implementation.md b/docs/reports/implementation/2026-04-22-staff-recruitment-collation-fix-implementation.md
new file mode 100644
index 00000000..98af2ae3
--- /dev/null
+++ b/docs/reports/implementation/2026-04-22-staff-recruitment-collation-fix-implementation.md
@@ -0,0 +1,34 @@
+# 员工招聘列表排序规则冲突修复实施记录
+
+## 基本信息
+
+- 日期：2026-04-22
+- 范围：员工招聘列表后端查询与数据库排序规则修复
+- 关联计划：`docs/plans/backend/2026-04-22-staff-recruitment-collation-fix-backend-implementation.md`
+
+## 实施内容
+
+- 修复 `CcdiStaffRecruitmentMapper.xml` 中招聘列表查询，对历史工作经历子查询的 `recruit_id` 聚合与关联显式指定 `utf8mb4_general_ci`，避免主表与子表排序规则不一致时在查询阶段报错。
+- 修复 `2026-04-15-add-staff-recruitment-social-work-summary.sql`，为 `ccdi_staff_recruitment_work` 建表语句补齐 `COLLATE=utf8mb4_general_ci`，防止新环境建表时继承 MySQL 默认 `utf8mb4_0900_ai_ci`。
+- 新增 `2026-04-22-fix-staff-recruitment-work-collation.sql`，用于修复已有库中 `ccdi_staff_recruitment_work` 的存量排序规则。
+- 更新 `2026-04-17-unify-all-table-collation-to-utf8mb4-general-ci.sql`，将 `ccdi_staff_recruitment_work` 纳入统一排序规则脚本。
+
+## 根因结论
+
+- `ccdi_staff_recruitment` 已统一为 `utf8mb4_general_ci`。
+- `ccdi_staff_recruitment_work` 的建表脚本未显式指定排序规则，且全库统一脚本遗漏该表，在 MySQL 8 默认排序规则为 `utf8mb4_0900_ai_ci` 的环境中会产生漂移。
+- 招聘列表 SQL 使用 `w.recruit_id = r.recruit_id` 进行关联时触发不同排序规则比较，导致查询失败。
+
+## 验证结果
+
+- 后端编译：
+  `mvn -pl ccdi-info-collection -am compile`
+  结果：PASS
+- 数据库修复脚本：
+  `bin/mysql_utf8_exec.sh sql/migration/2026-04-22-fix-staff-recruitment-work-collation.sql`
+  结果：未执行（本次仅完成代码与脚本修复，待目标库执行）
+
+## 后续执行说明
+
+- 代码发布前，需先在目标库执行本次新增的排序规则修复脚本。
+- 若目标库此前执行过 `2026-04-17-unify-all-table-collation-to-utf8mb4-general-ci.sql`，也仍需补执行本次新增脚本，因为旧脚本未覆盖 `ccdi_staff_recruitment_work`。
diff --git a/sql/migration/2026-04-15-add-staff-recruitment-social-work-summary.sql b/sql/migration/2026-04-15-add-staff-recruitment-social-work-summary.sql
index cb724adc..b30ff936 100644
--- a/sql/migration/2026-04-15-add-staff-recruitment-social-work-summary.sql
+++ b/sql/migration/2026-04-15-add-staff-recruitment-social-work-summary.sql
@@ -41,4 +41,4 @@ CREATE TABLE IF NOT EXISTS `ccdi_staff_recruitment_work`
     PRIMARY KEY (`id`),
     KEY `idx_recruit_id` (`recruit_id`),
     KEY `idx_recruit_id_sort_order` (`recruit_id`, `sort_order`)
-) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='招聘信息历史工作经历表';
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci COMMENT='招聘信息历史工作经历表';
diff --git a/sql/migration/2026-04-17-unify-all-table-collation-to-utf8mb4-general-ci.sql b/sql/migration/2026-04-17-unify-all-table-collation-to-utf8mb4-general-ci.sql
index 980845fa..21b1538c 100644
--- a/sql/migration/2026-04-17-unify-all-table-collation-to-utf8mb4-general-ci.sql
+++ b/sql/migration/2026-04-17-unify-all-table-collation-to-utf8mb4-general-ci.sql
@@ -36,6 +36,7 @@ ALTER TABLE ccdi_purchase_transaction CONVERT TO CHARACTER SET utf8mb4 COLLATE u
 ALTER TABLE ccdi_staff_enterprise_relation CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci;
 ALTER TABLE ccdi_staff_fmy_relation CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci;
 ALTER TABLE ccdi_staff_recruitment CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci;
+ALTER TABLE ccdi_staff_recruitment_work CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci;
 ALTER TABLE ccdi_staff_transfer CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci;
 ALTER TABLE gen_table CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci;
 ALTER TABLE gen_table_column CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci;
diff --git a/sql/migration/2026-04-22-fix-ccdi-database-default-collation.sql b/sql/migration/2026-04-22-fix-ccdi-database-default-collation.sql
new file mode 100644
index 00000000..d80ce989
--- /dev/null
+++ b/sql/migration/2026-04-22-fix-ccdi-database-default-collation.sql
@@ -0,0 +1,6 @@
+-- 修复 ccdi 数据库默认字符集与排序规则
+-- 目标：将数据库默认字符集统一为 utf8mb4，默认排序规则统一为 utf8mb4_general_ci
+
+ALTER DATABASE `ccdi`
+    CHARACTER SET = utf8mb4
+    COLLATE = utf8mb4_general_ci;
diff --git a/sql/migration/2026-04-22-fix-staff-recruitment-work-collation.sql b/sql/migration/2026-04-22-fix-staff-recruitment-work-collation.sql
new file mode 100644
index 00000000..c56b124d
--- /dev/null
+++ b/sql/migration/2026-04-22-fix-staff-recruitment-work-collation.sql
@@ -0,0 +1,7 @@
+-- 修复员工招聘历史工作经历表排序规则漂移
+-- 目标：
+-- 1. 将 ccdi_staff_recruitment_work 统一为 utf8mb4 / utf8mb4_general_ci。
+-- 2. 消除与 ccdi_staff_recruitment 在 recruit_id 关联时的排序规则冲突。
+
+ALTER TABLE `ccdi_staff_recruitment_work`
+    CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci;