144 lines
5.5 KiB
SQL
144 lines
5.5 KiB
SQL
-- ===========================================
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-- 班级操行分管理系统 - v2.0 数据库迁移脚本
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-- 适用版本: v1.8 → v2.0
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-- 字符集: utf8mb4
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--
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-- 说明:
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-- v2.0 主要为应用层代码变更（UI折叠菜单、扣分类型扩展、
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-- 科目选择修复、页面改名、记录人优化、学期管理优化等），
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-- 数据库 schema 变更较少。本脚本主要处理历史数据迁移
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-- 和索引优化。
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--
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-- 迁移内容:
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-- 1. 将 conduct_records.recorder_name 从用户名更新为真实姓名
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-- 2. 将 attendance_records 相关记录中的 recorder_name 同步更新
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-- 3. 确保 semester_id 索引存在（学期记录数统计优化）
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-- 4. 数据验证
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--
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-- 重要: 执行前请备份数据库！
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-- ===========================================
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USE `classmanagerdb`;
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-- ===========================================
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-- 1. 更新 conduct_records 中的 recorder_name
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-- v2.0 将 recorder_name 从用户名(username)改为真实姓名(real_name)
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-- 需要将历史记录中的用户名更新为对应的真实姓名
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-- ===========================================
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-- 通过 JOIN users 表将 recorder_name 从 username 更新为 real_name
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UPDATE conduct_records cr
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INNER JOIN users u ON cr.recorder_id = u.user_id
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SET cr.recorder_name = u.real_name
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WHERE cr.recorder_name != u.real_name
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OR cr.recorder_name IS NULL;
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-- ===========================================
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-- 2. 确保学期相关索引存在
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-- v2.0 新增学期记录数统计功能，需要 semester_id 索引优化查询
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-- ===========================================
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SET @dbname = DATABASE();
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-- conduct_records 表 semester_id 索引
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SET @indexname = 'idx_conduct_semester_id';
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SET @preparedStatement = (SELECT IF(
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(SELECT COUNT(*) FROM INFORMATION_SCHEMA.STATISTICS
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WHERE TABLE_SCHEMA = @dbname AND TABLE_NAME = 'conduct_records' AND INDEX_NAME = @indexname) > 0,
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'SELECT 1',
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'ALTER TABLE conduct_records ADD INDEX idx_conduct_semester_id (semester_id)'
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));
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PREPARE alterIfNotExists FROM @preparedStatement;
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EXECUTE alterIfNotExists;
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DEALLOCATE PREPARE alterIfNotExists;
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-- attendance_records 表 semester_id 索引
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SET @indexname = 'idx_attendance_semester_id';
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SET @preparedStatement = (SELECT IF(
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(SELECT COUNT(*) FROM INFORMATION_SCHEMA.STATISTICS
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WHERE TABLE_SCHEMA = @dbname AND TABLE_NAME = 'attendance_records' AND INDEX_NAME = @indexname) > 0,
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'SELECT 1',
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'ALTER TABLE attendance_records ADD INDEX idx_attendance_semester_id (semester_id)'
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));
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PREPARE alterIfNotExists FROM @preparedStatement;
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EXECUTE alterIfNotExists;
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DEALLOCATE PREPARE alterIfNotExists;
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-- ===========================================
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-- 3. 确保之前版本的索引也存在（幂等兼容）
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-- ===========================================
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-- assignments 表 subject_id 索引（v1.8 科目删除数据检查）
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SET @indexname = 'idx_assignments_subject_id';
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SET @preparedStatement = (SELECT IF(
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(SELECT COUNT(*) FROM INFORMATION_SCHEMA.STATISTICS
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WHERE TABLE_SCHEMA = @dbname AND TABLE_NAME = 'assignments' AND INDEX_NAME = @indexname) > 0,
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'SELECT 1',
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'ALTER TABLE assignments ADD INDEX idx_assignments_subject_id (subject_id)'
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));
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PREPARE alterIfNotExists FROM @preparedStatement;
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EXECUTE alterIfNotExists;
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DEALLOCATE PREPARE alterIfNotExists;
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-- conduct_records 表 student_id 索引
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SET @indexname = 'idx_conduct_student_id';
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SET @preparedStatement = (SELECT IF(
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(SELECT COUNT(*) FROM INFORMATION_SCHEMA.STATISTICS
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WHERE TABLE_SCHEMA = @dbname AND TABLE_NAME = 'conduct_records' AND INDEX_NAME = @indexname) > 0,
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'SELECT 1',
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'ALTER TABLE conduct_records ADD INDEX idx_conduct_student_id (student_id)'
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));
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PREPARE alterIfNotExists FROM @preparedStatement;
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EXECUTE alterIfNotExists;
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DEALLOCATE PREPARE alterIfNotExists;
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-- conduct_records 表 created_at 索引
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SET @indexname = 'idx_conduct_created_at';
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SET @preparedStatement = (SELECT IF(
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(SELECT COUNT(*) FROM INFORMATION_SCHEMA.STATISTICS
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WHERE TABLE_SCHEMA = @dbname AND TABLE_NAME = 'conduct_records' AND INDEX_NAME = @indexname) > 0,
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'SELECT 1',
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'ALTER TABLE conduct_records ADD INDEX idx_conduct_created_at (created_at)'
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));
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PREPARE alterIfNotExists FROM @preparedStatement;
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EXECUTE alterIfNotExists;
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DEALLOCATE PREPARE alterIfNotExists;
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-- ===========================================
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-- 4. 验证迁移结果
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-- ===========================================
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SELECT '===== v2.0 数据库迁移验证 =====' AS '';
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-- 检查 recorder_name 是否已更新为真实姓名
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SELECT
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'recorder_name 迁移验证' AS `检查项`,
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COUNT(*) AS `总记录数`,
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SUM(CASE WHEN cr.recorder_name = u.real_name THEN 1 ELSE 0 END) AS `已匹配真实姓名`,
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SUM(CASE WHEN cr.recorder_name != u.real_name AND u.real_name IS NOT NULL THEN 1 ELSE 0 END) AS `仍为用户名`
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FROM conduct_records cr
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INNER JOIN users u ON cr.recorder_id = u.user_id;
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-- 检查学期相关索引
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SELECT
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'学期索引验证' AS `检查项`,
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TABLE_NAME AS `表名`,
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INDEX_NAME AS `索引名`
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FROM INFORMATION_SCHEMA.STATISTICS
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WHERE TABLE_SCHEMA = @dbname
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AND INDEX_NAME IN ('idx_conduct_semester_id', 'idx_attendance_semester_id')
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GROUP BY TABLE_NAME, INDEX_NAME;
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-- 检查学期记录数统计示例
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SELECT
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'学期记录统计示例' AS `检查项`,
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s.semester_name,
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s.is_active,
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(SELECT COUNT(*) FROM conduct_records WHERE semester_id = s.semester_id) AS `操行分记录数`,
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(SELECT COUNT(*) FROM attendance_records WHERE semester_id = s.semester_id) AS `考勤记录数`
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FROM semesters s
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ORDER BY s.is_active DESC, s.created_at DESC
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LIMIT 5;
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SELECT 'v2.0 数据库迁移完成！' AS message;
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