v2.3更新

sql/upgrades/v1.5.sql

@@ -0,0 +1,30 @@
+-- ===========================================
+-- 班级操行分管理系统 - v1.4 → v1.5 升级脚本
+-- 字符集: utf8mb4
+--
+-- 变更内容:
+--   1. 创建 semester_archives（学期归档快照表）
+--
+-- 兼容性: 使用 IF NOT EXISTS 实现幂等，phpMyAdmin 可直接执行
+-- ===========================================
+
+CREATE TABLE IF NOT EXISTS `semester_archives` (
+    `archive_id` INT PRIMARY KEY AUTO_INCREMENT,
+    `semester_id` INT NOT NULL,
+    `student_id` INT NOT NULL,
+    `student_no` VARCHAR(20) NOT NULL,
+    `student_name` VARCHAR(50) NOT NULL,
+    `final_points` INT NOT NULL COMMENT '学期最终操行分',
+    `rank_position` INT DEFAULT NULL COMMENT '排名',
+    `total_students` INT DEFAULT NULL COMMENT '班级总人数',
+    `attendance_present` INT DEFAULT 0 COMMENT '出勤次数',
+    `attendance_absent` INT DEFAULT 0 COMMENT '缺勤次数',
+    `attendance_late` INT DEFAULT 0 COMMENT '迟到次数',
+    `attendance_leave` INT DEFAULT 0 COMMENT '请假次数',
+    `homework_submitted` INT DEFAULT 0 COMMENT '已交作业数',
+    `homework_not_submitted` INT DEFAULT 0 COMMENT '未交作业数',
+    `homework_late` INT DEFAULT 0 COMMENT '迟交作业数',
+    `archived_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    FOREIGN KEY (`semester_id`) REFERENCES `semesters`(`semester_id`),
+    FOREIGN KEY (`student_id`) REFERENCES `students`(`student_id`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;