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CREATE DATABASE if not exists yxs_sms;
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USE yxs_sms;
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-- 用户表
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CREATE TABLE IF NOT EXISTS users (
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id varchar(64) NOT NULL COMMENT '用户ID（雪花算法生成）',
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username varchar(50) NOT NULL UNIQUE COMMENT '用户名',
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password varchar(255) NOT NULL COMMENT '密码（加密存储）',
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email varchar(100) COMMENT '邮箱',
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role int NOT NULL COMMENT '用户角色：1=超级管理员，2=普通管理员，3=教师，4=学生',
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status int NOT NULL DEFAULT 1 COMMENT '用户状态：0=禁用，1=正常，2=已删除',
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created_time datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
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updated_time datetime NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
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PRIMARY KEY (id),
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UNIQUE KEY uk_username (username),
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INDEX idx_role (role),
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INDEX idx_status (status)
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='用户表';
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-- 初始化超级管理员账号（密码：admin123）
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INSERT INTO users (id, username, password, email, role, status)
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VALUES ('1', 'admin', '$2a$10$hD.BTeMvHjwopHom7wyNsOD4zgFbQuF5ZYRflikt9ee.UrlzrqToi', 'admin@yuxingshi.com', 1, 1)
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ON DUPLICATE KEY UPDATE id = id;
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-- 班级表
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CREATE TABLE IF NOT EXISTS classes (
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id varchar(64) NOT NULL COMMENT '班级ID（雪花算法生成）',
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class_name varchar(50) NOT NULL UNIQUE COMMENT '班级名称',
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class_code varchar(30) NOT NULL UNIQUE COMMENT '班级代码',
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description varchar(255) COMMENT '班级描述',
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status int NOT NULL DEFAULT 1 COMMENT '班级状态：0=禁用，1=正常',
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created_time datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
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updated_time datetime NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
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PRIMARY KEY (id),
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UNIQUE KEY uk_class_name (class_name),
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UNIQUE KEY uk_class_code (class_code),
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INDEX idx_status (status)
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='班级表';
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-- 学生表
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CREATE TABLE IF NOT EXISTS students (
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id varchar(64) NOT NULL COMMENT '学生ID（雪花算法生成）',
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user_id varchar(64) NOT NULL COMMENT '用户ID（关联users表）',
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class_id varchar(64) NOT NULL COMMENT '班级ID（关联classes表）',
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student_no varchar(30) NOT NULL UNIQUE COMMENT '学号',
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real_name varchar(50) NOT NULL COMMENT '真实姓名',
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gender int COMMENT '性别：0=女，1=男',
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phone varchar(20) COMMENT '电话号码',
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status int NOT NULL DEFAULT 1 COMMENT '学生状态：0=禁用，1=正常，2=已毕业',
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created_time datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
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updated_time datetime NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
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PRIMARY KEY (id),
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UNIQUE KEY uk_user_id (user_id),
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UNIQUE KEY uk_student_no (student_no),
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KEY fk_class_id (class_id),
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CONSTRAINT fk_classes FOREIGN KEY (class_id) REFERENCES classes(id),
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CONSTRAINT fk_users FOREIGN KEY (user_id) REFERENCES users(id)
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='学生表';
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-- 教师表
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CREATE TABLE IF NOT EXISTS teachers (
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id varchar(64) NOT NULL COMMENT '教师ID（雪花算法生成）',
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user_id varchar(64) UNIQUE COMMENT '关联的用户ID',
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teacher_no VARCHAR(50) UNIQUE NOT NULL COMMENT '教师工号',
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real_name VARCHAR(100) NOT NULL COMMENT '教师真实姓名',
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department VARCHAR(100) COMMENT '所属部门',
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phone VARCHAR(20) COMMENT '电话号码',
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status INT DEFAULT 1 COMMENT '状态：1=启用，0=禁用',
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created_time DATETIME DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
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updated_time DATETIME DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
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PRIMARY KEY (id)
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='教师表';
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-- 课程表
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CREATE TABLE IF NOT EXISTS courses (
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id varchar(64) NOT NULL COMMENT '课程ID（雪花算法生成）',
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teacher_id varchar(64) NOT NULL COMMENT '教师ID（外键）',
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course_name VARCHAR(200) NOT NULL COMMENT '课程名称',
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course_code VARCHAR(100) UNIQUE NOT NULL COMMENT '课程代码',
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credit DECIMAL(3,1) COMMENT '学分',
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total_hours INT COMMENT '总课时',
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description TEXT COMMENT '课程描述',
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status INT DEFAULT 1 COMMENT '状态：1=启用，0=禁用',
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created_time DATETIME DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
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updated_time DATETIME DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
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PRIMARY KEY (id),
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FOREIGN KEY (teacher_id) REFERENCES teachers(id) ON DELETE RESTRICT COMMENT '教师外键约束'
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='课程表';
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-- 创建索引
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CREATE INDEX idx_teacher_id ON courses(teacher_id);
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CREATE INDEX idx_course_code ON courses(course_code);
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CREATE INDEX idx_teacher_no ON teachers(teacher_no);
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-- 课程成绩表
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CREATE TABLE IF NOT EXISTS course_scores (
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id varchar(64) NOT NULL COMMENT '成绩ID（雪花算法生成）',
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course_id varchar(64) NOT NULL COMMENT '课程ID（外键）',
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student_id varchar(64) NOT NULL COMMENT '学生ID（外键）',
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usual_score DECIMAL(5,2) COMMENT '平时成绩(0-100)',
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midterm_score DECIMAL(5,2) COMMENT '期中成绩(0-100)',
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final_score DECIMAL(5,2) COMMENT '期末成绩(0-100)',
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total_score DECIMAL(5,2) COMMENT '总成绩(0-100)',
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grade VARCHAR(10) COMMENT '等级(A/B/C/D/F)',
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status INT DEFAULT 1 COMMENT '状态：1=正常，0=删除',
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remark VARCHAR(500) COMMENT '备注',
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created_time DATETIME DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
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updated_time DATETIME DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
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PRIMARY KEY (id),
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FOREIGN KEY (course_id) REFERENCES courses(id) ON DELETE RESTRICT COMMENT '课程外键',
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FOREIGN KEY (student_id) REFERENCES students(id) ON DELETE RESTRICT COMMENT '学生外键',
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UNIQUE KEY uk_course_student (course_id, student_id) COMMENT '同一学生同一课程唯一'
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='课程成绩表';
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-- 创建索引
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CREATE INDEX idx_course_id ON course_scores(course_id);
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CREATE INDEX idx_student_id ON course_scores(student_id);
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CREATE INDEX idx_grade ON course_scores(grade);
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