102 lines
3.4 KiB
SQL
102 lines
3.4 KiB
SQL
-- ========================================
|
|
-- 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%';
|