wuzhen update

backend/sql/fix_quota_unique_constraint.sql

@@ -0,0 +1,101 @@
+-- ========================================
+-- 修复奖学金名额分配唯一约束问题
+-- 创建时间: 2025-01-28
+-- 问题描述: 唯一约束包含deleted字段导致逻辑删除时出现约束冲突
+-- ========================================
+
+USE hzdyjs_xg;
+
+-- 1. 查看当前的唯一约束问题数据
+SELECT
+    batch_id,
+    scholarship_type_id,
+    target_dept_id,
+    deleted,
+    COUNT(*) as count_records,
+    GROUP_CONCAT(id) as record_ids,
+    GROUP_CONCAT(status) as statuses
+FROM jcbt_scholarship_quota
+GROUP BY batch_id, scholarship_type_id, target_dept_id, deleted
+HAVING COUNT(*) > 1
+ORDER BY batch_id, scholarship_type_id, target_dept_id;
+
+-- 2. 查看可能存在冲突的记录（同一组合下有删除和未删除的记录）
+SELECT
+    q1.id as active_id,
+    q1.batch_id,
+    q1.scholarship_type_id,
+    q1.target_dept_id,
+    q1.deleted as active_deleted,
+    q1.status as active_status,
+    q2.id as deleted_id,
+    q2.deleted as deleted_deleted,
+    q2.status as deleted_status
+FROM jcbt_scholarship_quota q1
+INNER JOIN jcbt_scholarship_quota q2 ON
+    q1.batch_id = q2.batch_id
+    AND q1.scholarship_type_id = q2.scholarship_type_id
+    AND q1.target_dept_id = q2.target_dept_id
+    AND q1.deleted = 0
+    AND q2.deleted = 1
+ORDER BY q1.batch_id, q1.scholarship_type_id, q1.target_dept_id;
+
+-- 3. 删除旧的唯一约束（包含deleted字段的约束）
+ALTER TABLE jcbt_scholarship_quota DROP INDEX uk_batch_type_dept;
+
+-- 4. 先清理可能的重复数据，然后重新添加不包含deleted字段的唯一约束
+-- 这样可以避免删除时的约束冲突，同时保证业务数据的唯一性
+
+-- 清理重复的已删除记录（保留最新的一条）
+DELETE q1 FROM jcbt_scholarship_quota q1
+INNER JOIN jcbt_scholarship_quota q2
+WHERE q1.batch_id = q2.batch_id
+  AND q1.scholarship_type_id = q2.scholarship_type_id
+  AND q1.target_dept_id = q2.target_dept_id
+  AND q1.deleted = 1
+  AND q2.deleted = 1
+  AND q1.id < q2.id;
+
+-- 如果仍然存在同一业务组合的active和deleted记录，物理删除deleted记录
+DELETE FROM jcbt_scholarship_quota
+WHERE deleted = 1
+AND EXISTS (
+    SELECT 1 FROM jcbt_scholarship_quota q2
+    WHERE q2.batch_id = jcbt_scholarship_quota.batch_id
+      AND q2.scholarship_type_id = jcbt_scholarship_quota.scholarship_type_id
+      AND q2.target_dept_id = jcbt_scholarship_quota.target_dept_id
+      AND q2.deleted = 0
+);
+
+-- 重新添加不包含deleted字段的唯一约束
+ALTER TABLE jcbt_scholarship_quota
+ADD CONSTRAINT uk_batch_type_dept_business
+UNIQUE (batch_id, scholarship_type_id, target_dept_id);
+
+-- 5. 验证修复结果
+SELECT
+    '修复后检查' as check_type,
+    batch_id,
+    scholarship_type_id,
+    target_dept_id,
+    COUNT(*) as count_records,
+    GROUP_CONCAT(CONCAT('id:', id, ',deleted:', deleted)) as record_details
+FROM jcbt_scholarship_quota
+WHERE deleted = 0
+GROUP BY batch_id, scholarship_type_id, target_dept_id
+HAVING COUNT(*) > 1
+UNION ALL
+SELECT
+    '已删除记录检查' as check_type,
+    batch_id,
+    scholarship_type_id,
+    target_dept_id,
+    COUNT(*) as count_records,
+    GROUP_CONCAT(CONCAT('id:', id, ',deleted:', deleted)) as record_details
+FROM jcbt_scholarship_quota
+WHERE deleted = 1
+GROUP BY batch_id, scholarship_type_id, target_dept_id
+HAVING COUNT(*) > 1;
+
+-- 6. 显示当前表的约束信息
+SHOW INDEX FROM jcbt_scholarship_quota WHERE Key_name LIKE '%batch%' OR Key_name LIKE '%type%' OR Key_name LIKE '%dept%';