feat:数据库设计

sql/postgersql.sql

@@ -1,5 +1,5 @@
--- CREATE DATABASE  serve;
--- USE serve;
+CREATE DATABASE  oj;
+-- USE oj;
 
 -- 创建 schema（如果不存在）
 CREATE SCHEMA IF NOT EXISTS dev;
@@ -22,14 +22,16 @@ CREATE SCHEMA IF NOT EXISTS dev;
 DROP TABLE IF EXISTS dev.user;
 -- 在 dev schema 下创建用户表
 CREATE TABLE dev.user (
-                          id SERIAL PRIMARY KEY,
+                          id BIGSERIAL PRIMARY KEY,
                           account VARCHAR(50) NOT NULL UNIQUE,
                           password VARCHAR(255) NOT NULL,
                           username VARCHAR(100) NOT NULL,
-                          role VARCHAR(20) NOT NULL DEFAULT 'user',
+                          role VARCHAR(20) NOT NULL DEFAULT 'user' CHECK (role IN ('user', 'coach', 'admin')),
                           avatar TEXT,
-                          enable INT NOT NULL DEFAULT 1,
-                          delete_flag INT NOT NULL DEFAULT 0
+                          enable INT NOT NULL DEFAULT 1 CHECK (enable IN (0, 1)),
+                          delete_flag INT NOT NULL DEFAULT 0 CHECK (delete_flag IN (0, 1)),
+                          created_at TIMESTAMP NOT NULL DEFAULT NOW(),
+                          updated_at TIMESTAMP NOT NULL DEFAULT NOW()
 );
 
 -- 添加注释
@@ -38,13 +40,267 @@ COMMENT ON COLUMN dev.user.id IS '用户ID，自增主键';
 COMMENT ON COLUMN dev.user.account IS '账号，唯一';
 COMMENT ON COLUMN dev.user.password IS '密码';
 COMMENT ON COLUMN dev.user.username IS '用户名';
-COMMENT ON COLUMN dev.user.role IS '角色';
+COMMENT ON COLUMN dev.user.role IS '角色：user-普通用户，coach-教练，admin-管理员';
 COMMENT ON COLUMN dev.user.avatar IS '头像URL';
 COMMENT ON COLUMN dev.user.enable IS '是否启用';
 COMMENT ON COLUMN dev.user.delete_flag IS '删除标记';
+COMMENT ON COLUMN dev.user.created_at IS '创建时间';
+COMMENT ON COLUMN dev.user.updated_at IS '更新时间';
 
 -- 创建索引
-CREATE INDEX idx_user_account ON dev.user(account);
 CREATE INDEX idx_user_role ON dev.user(role);
 CREATE INDEX idx_user_enable ON dev.user(enable);
 CREATE INDEX idx_user_delete_flag ON dev.user(delete_flag);
+
+-- 题目表
+DROP TABLE IF EXISTS dev.problem;
+CREATE TABLE dev.problem (
+                         id BIGSERIAL PRIMARY KEY,
+                         title VARCHAR(200) NOT NULL,
+                         description TEXT NOT NULL,
+                         time_limit_ms INT NOT NULL CHECK (time_limit_ms > 0),
+                         memory_limit_mb INT NOT NULL CHECK (memory_limit_mb > 0),
+                         try_count BIGINT NOT NULL DEFAULT 0,
+                         accepted_count BIGINT NOT NULL DEFAULT 0,
+                         is_public SMALLINT NOT NULL DEFAULT 0 CHECK (is_public IN (0, 1)),
+                         difficulty VARCHAR(10) CHECK (difficulty IN ('easy', 'medium', 'hard')),
+                         created_by BIGINT,
+                         created_at TIMESTAMP NOT NULL DEFAULT NOW(),
+                         updated_at TIMESTAMP NOT NULL DEFAULT NOW()
+);
+
+COMMENT ON TABLE dev.problem IS '题目表';
+COMMENT ON COLUMN dev.problem.id IS '题目唯一标识';
+COMMENT ON COLUMN dev.problem.title IS '题目标题';
+COMMENT ON COLUMN dev.problem.description IS '题目描述';
+COMMENT ON COLUMN dev.problem.time_limit_ms IS '时间限制（毫秒）';
+COMMENT ON COLUMN dev.problem.memory_limit_mb IS '内存限制（MB）';
+COMMENT ON COLUMN dev.problem.try_count IS '总提交次数';
+COMMENT ON COLUMN dev.problem.accepted_count IS '通过次数（AC次数）';
+COMMENT ON COLUMN dev.problem.is_public IS '是否公开题目,0-未公开,1-公开';
+COMMENT ON COLUMN dev.problem.difficulty IS '难度：easy-简单，medium-中等，hard-困难';
+COMMENT ON COLUMN dev.problem.created_by IS '创建者ID，逻辑外键，关联用户表';
+COMMENT ON COLUMN dev.problem.created_at IS '创建时间';
+COMMENT ON COLUMN dev.problem.updated_at IS '更新时间';
+
+-- 题目样例表
+DROP TABLE IF EXISTS dev.problem_case;
+CREATE TABLE dev.problem_case (
+                              id BIGSERIAL PRIMARY KEY,
+                              problem_id BIGINT NOT NULL,
+                              input TEXT,
+                              output TEXT,
+                              description TEXT,
+                              sort_order INT NOT NULL DEFAULT 0,
+                              created_at TIMESTAMP NOT NULL DEFAULT NOW(),
+                              updated_at TIMESTAMP NOT NULL DEFAULT NOW()
+);
+
+COMMENT ON TABLE dev.problem_case IS '题目样例表（展示给用户的示例）';
+COMMENT ON COLUMN dev.problem_case.id IS '样例唯一标识';
+COMMENT ON COLUMN dev.problem_case.problem_id IS '所属题目ID，逻辑外键，关联题目表';
+COMMENT ON COLUMN dev.problem_case.input IS '样例输入';
+COMMENT ON COLUMN dev.problem_case.output IS '样例输出';
+COMMENT ON COLUMN dev.problem_case.description IS '样例说明';
+COMMENT ON COLUMN dev.problem_case.sort_order IS '显示顺序';
+COMMENT ON COLUMN dev.problem_case.created_at IS '创建时间';
+COMMENT ON COLUMN dev.problem_case.updated_at IS '更新时间';
+
+-- 题目评测用例表
+DROP TABLE IF EXISTS dev.problem_test;
+CREATE TABLE dev.problem_test (
+                              id BIGSERIAL PRIMARY KEY,
+                              problem_id BIGINT NOT NULL,
+                              input TEXT,
+                              output TEXT,
+                              sort_order INT NOT NULL DEFAULT 0,
+                              is_hidden INT NOT NULL DEFAULT 0,
+                              created_at TIMESTAMP NOT NULL DEFAULT NOW(),
+                              updated_at TIMESTAMP NOT NULL DEFAULT NOW()
+);
+
+COMMENT ON TABLE dev.problem_test IS '题目评测用例表（后台判题用）';
+COMMENT ON COLUMN dev.problem_test.id IS '用例唯一标识';
+COMMENT ON COLUMN dev.problem_test.problem_id IS '所属题目ID，逻辑外键，关联题目表';
+COMMENT ON COLUMN dev.problem_test.input IS '测试输入';
+COMMENT ON COLUMN dev.problem_test.output IS '测试输出';
+COMMENT ON COLUMN dev.problem_test.sort_order IS '判题顺序';
+COMMENT ON COLUMN dev.problem_test.is_hidden IS '是否隐藏用例，0-不隐藏，1-隐藏（不展示给用户）';
+COMMENT ON COLUMN dev.problem_test.created_at IS '创建时间';
+COMMENT ON COLUMN dev.problem_test.updated_at IS '更新时间';
+
+-- 提交记录表
+DROP TABLE IF EXISTS dev.submission;
+CREATE TABLE dev.submission (
+                            id BIGSERIAL PRIMARY KEY,
+                            problem_id BIGINT NOT NULL,
+                            user_id BIGINT NOT NULL,
+                            contest_id BIGINT,
+                            code TEXT NOT NULL,
+                            language VARCHAR(20) NOT NULL,
+                            status VARCHAR(20) NOT NULL DEFAULT 'SUBMITTED' CHECK (status IN ('SUBMITTED', 'JUDGING', 'AC', 'WA', 'TLE', 'MLE', 'RE', 'CE')),
+                            judge_detail TEXT,
+                            time_used_ms INT,
+                            memory_used_kb INT,
+                            score INT,
+                            total_test_cases INT NOT NULL DEFAULT 0,
+                            passed_test_cases INT NOT NULL DEFAULT 0,
+                            created_at TIMESTAMP NOT NULL DEFAULT NOW(),
+                            updated_at TIMESTAMP NOT NULL DEFAULT NOW()
+);
+
+COMMENT ON TABLE dev.submission IS '提交记录表';
+COMMENT ON COLUMN dev.submission.id IS '提交唯一标识';
+COMMENT ON COLUMN dev.submission.problem_id IS '题目ID，逻辑外键，关联题目表';
+COMMENT ON COLUMN dev.submission.user_id IS '提交用户ID，逻辑外键，关联用户表';
+COMMENT ON COLUMN dev.submission.contest_id IS '所属比赛ID，逻辑外键，关联比赛表，为空表示非比赛提交';
+COMMENT ON COLUMN dev.submission.code IS '提交代码';
+COMMENT ON COLUMN dev.submission.language IS '编程语言（c/cpp/java/python等）';
+COMMENT ON COLUMN dev.submission.status IS '判题状态：SUBMITTED-提交成功，JUDGING-判题中，AC-全部测试用例通过，WA-输出与预期不符，TLE-运行时间超限，MLE-内存使用超限，RE-运行时错误，CE-编译失败';
+COMMENT ON COLUMN dev.submission.judge_detail IS '判题详情（如编译错误输出、失败用例说明等）';
+COMMENT ON COLUMN dev.submission.time_used_ms IS '运行耗时（毫秒）';
+COMMENT ON COLUMN dev.submission.memory_used_kb IS '内存占用（KB）';
+COMMENT ON COLUMN dev.submission.score IS '该题得分（用于比赛）';
+COMMENT ON COLUMN dev.submission.total_test_cases IS '总测试用例数';
+COMMENT ON COLUMN dev.submission.passed_test_cases IS '通过的测试用例数';
+COMMENT ON COLUMN dev.submission.created_at IS '创建时间';
+COMMENT ON COLUMN dev.submission.updated_at IS '更新时间';
+
+-- 题目类别表
+DROP TABLE IF EXISTS dev.category;
+CREATE TABLE dev.category (
+                          id BIGSERIAL PRIMARY KEY,
+                          category_name VARCHAR(50) NOT NULL UNIQUE,
+                          description TEXT,
+                          created_at TIMESTAMP NOT NULL DEFAULT NOW(),
+                          updated_at TIMESTAMP NOT NULL DEFAULT NOW()
+);
+
+COMMENT ON TABLE dev.category IS '题目类别表（如动态规划、贪心等）';
+COMMENT ON COLUMN dev.category.id IS '类别唯一标识';
+COMMENT ON COLUMN dev.category.category_name IS '类别名称';
+COMMENT ON COLUMN dev.category.description IS '类别描述';
+COMMENT ON COLUMN dev.category.created_at IS '创建时间';
+COMMENT ON COLUMN dev.category.updated_at IS '更新时间';
+
+-- 题目-类别关联表
+DROP TABLE IF EXISTS dev.problem_category_rel;
+CREATE TABLE dev.problem_category_rel (
+                                      problem_id BIGINT NOT NULL,
+                                      category_id BIGINT NOT NULL,
+                                      created_at TIMESTAMP NOT NULL DEFAULT NOW(),
+                                      updated_at TIMESTAMP NOT NULL DEFAULT NOW(),
+                                      PRIMARY KEY (problem_id, category_id)
+);
+
+COMMENT ON TABLE dev.problem_category_rel IS '题目与类别关联表';
+COMMENT ON COLUMN dev.problem_category_rel.problem_id IS '题目ID，逻辑外键，关联题目表';
+COMMENT ON COLUMN dev.problem_category_rel.category_id IS '类别ID，逻辑外键，关联类别表';
+COMMENT ON COLUMN dev.problem_category_rel.created_at IS '创建时间';
+COMMENT ON COLUMN dev.problem_category_rel.updated_at IS '更新时间';
+
+-- 比赛表
+DROP TABLE IF EXISTS dev.contest;
+CREATE TABLE dev.contest (
+                         id BIGSERIAL PRIMARY KEY,
+                         title VARCHAR(200) NOT NULL,
+                         description TEXT,
+                         type VARCHAR(20) NOT NULL CHECK (type IN ('public', 'private', 'password')),
+                         password VARCHAR(255),
+                         start_datetime TIMESTAMP NOT NULL,
+                         end_datetime TIMESTAMP NOT NULL CHECK (end_datetime > start_datetime),
+                         status VARCHAR(20) NOT NULL DEFAULT 'pending' CHECK (status IN ('pending', 'running', 'ended')),
+                         created_by BIGINT,
+                         created_at TIMESTAMP NOT NULL DEFAULT NOW(),
+                         updated_at TIMESTAMP NOT NULL DEFAULT NOW()
+);
+
+COMMENT ON TABLE dev.contest IS '比赛表';
+COMMENT ON COLUMN dev.contest.id IS '比赛唯一标识';
+COMMENT ON COLUMN dev.contest.title IS '比赛标题';
+COMMENT ON COLUMN dev.contest.description IS '比赛描述';
+COMMENT ON COLUMN dev.contest.type IS '比赛类型：public-公开，private-私有，password-密码访问';
+COMMENT ON COLUMN dev.contest.password IS '访问密码（type为password时使用）';
+COMMENT ON COLUMN dev.contest.start_datetime IS '开始时间';
+COMMENT ON COLUMN dev.contest.end_datetime IS '结束时间';
+COMMENT ON COLUMN dev.contest.status IS '状态：pending-未开始，running-进行中，ended-已结束';
+COMMENT ON COLUMN dev.contest.created_by IS '创建者ID，逻辑外键，关联用户表（管理员或教练）';
+COMMENT ON COLUMN dev.contest.created_at IS '创建时间';
+COMMENT ON COLUMN dev.contest.updated_at IS '更新时间';
+
+-- 比赛题目表
+DROP TABLE IF EXISTS dev.contest_problem;
+CREATE TABLE dev.contest_problem (
+                                 contest_id BIGINT NOT NULL,
+                                 problem_id BIGINT NOT NULL,
+                                 display_order INT NOT NULL,
+                                 score INT NOT NULL,
+                                 created_at TIMESTAMP NOT NULL DEFAULT NOW(),
+                                 updated_at TIMESTAMP NOT NULL DEFAULT NOW(),
+                                 PRIMARY KEY (contest_id, problem_id)
+);
+
+COMMENT ON TABLE dev.contest_problem IS '比赛与题目关联表';
+COMMENT ON COLUMN dev.contest_problem.contest_id IS '比赛ID，逻辑外键，关联比赛表';
+COMMENT ON COLUMN dev.contest_problem.problem_id IS '题目ID，逻辑外键，关联题目表';
+COMMENT ON COLUMN dev.contest_problem.display_order IS '题目在比赛中的显示序号';
+COMMENT ON COLUMN dev.contest_problem.score IS '本题分值';
+COMMENT ON COLUMN dev.contest_problem.created_at IS '创建时间';
+COMMENT ON COLUMN dev.contest_problem.updated_at IS '更新时间';
+
+-- 比赛报名表
+DROP TABLE IF EXISTS dev.contest_registration;
+CREATE TABLE dev.contest_registration (
+                                      id BIGSERIAL PRIMARY KEY,
+                                      contest_id BIGINT NOT NULL,
+                                      user_id BIGINT NOT NULL,
+                                      created_at TIMESTAMP NOT NULL DEFAULT NOW(),
+                                      updated_at TIMESTAMP NOT NULL DEFAULT NOW(),
+                                      UNIQUE (contest_id, user_id)
+);
+
+COMMENT ON TABLE dev.contest_registration IS '比赛报名表';
+COMMENT ON COLUMN dev.contest_registration.id IS '报名记录ID';
+COMMENT ON COLUMN dev.contest_registration.contest_id IS '比赛ID，逻辑外键，关联比赛表';
+COMMENT ON COLUMN dev.contest_registration.user_id IS '报名用户ID，逻辑外键，关联用户表';
+COMMENT ON COLUMN dev.contest_registration.created_at IS '创建时间';
+COMMENT ON COLUMN dev.contest_registration.updated_at IS '更新时间';
+
+-- 索引
+CREATE INDEX idx_problem_created_by ON dev.problem(created_by);
+CREATE INDEX idx_problem_is_public ON dev.problem(is_public);
+CREATE INDEX idx_problem_case_problem_id ON dev.problem_case(problem_id);
+CREATE INDEX idx_problem_test_problem_id ON dev.problem_test(problem_id);
+CREATE INDEX idx_submission_problem_id ON dev.submission(problem_id);
+CREATE INDEX idx_submission_user_id ON dev.submission(user_id);
+CREATE INDEX idx_submission_contest_id ON dev.submission(contest_id);
+CREATE INDEX idx_submission_created_at ON dev.submission(created_at);
+CREATE INDEX idx_submission_user_problem ON dev.submission(user_id, problem_id);
+CREATE INDEX idx_submission_contest_status ON dev.submission(contest_id, status);
+CREATE INDEX idx_problem_category_rel_problem_id ON dev.problem_category_rel(problem_id);
+CREATE INDEX idx_problem_category_rel_category_id ON dev.problem_category_rel(category_id);
+CREATE INDEX idx_contest_status ON dev.contest(status);
+CREATE INDEX idx_contest_start_datetime ON dev.contest(start_datetime);
+CREATE INDEX idx_contest_problem_contest_id ON dev.contest_problem(contest_id);
+CREATE INDEX idx_contest_problem_problem_id ON dev.contest_problem(problem_id);
+CREATE INDEX idx_contest_registration_contest_id ON dev.contest_registration(contest_id);
+CREATE INDEX idx_contest_registration_user_id ON dev.contest_registration(user_id);
+
+COMMENT ON INDEX idx_problem_created_by IS '题目创建者索引';
+COMMENT ON INDEX idx_problem_is_public IS '题目公开状态索引';
+COMMENT ON INDEX idx_problem_case_problem_id IS '题目样例题目ID索引';
+COMMENT ON INDEX idx_problem_test_problem_id IS '评测用例题目ID索引';
+COMMENT ON INDEX idx_submission_problem_id IS '提交记录题目ID索引';
+COMMENT ON INDEX idx_submission_user_id IS '提交记录用户ID索引';
+COMMENT ON INDEX idx_submission_contest_id IS '提交记录比赛ID索引';
+COMMENT ON INDEX idx_submission_created_at IS '提交记录时间索引';
+COMMENT ON INDEX idx_submission_user_problem IS '提交记录用户+题目索引';
+COMMENT ON INDEX idx_submission_contest_status IS '提交记录比赛+状态索引';
+COMMENT ON INDEX idx_problem_category_rel_problem_id IS '题目类别关联题目ID索引';
+COMMENT ON INDEX idx_problem_category_rel_category_id IS '题目类别关联类别ID索引';
+COMMENT ON INDEX idx_contest_status IS '比赛状态索引';
+COMMENT ON INDEX idx_contest_start_datetime IS '比赛开始时间索引';
+COMMENT ON INDEX idx_contest_problem_contest_id IS '比赛题目比赛ID索引';
+COMMENT ON INDEX idx_contest_problem_problem_id IS '比赛题目题目ID索引';
+COMMENT ON INDEX idx_contest_registration_contest_id IS '比赛报名比赛ID索引';
+COMMENT ON INDEX idx_contest_registration_user_id IS '比赛报名用户ID索引';