165 lines
10 KiB
SQL
165 lines
10 KiB
SQL
-- =============================================
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-- Education 模块 — 交卷提交与成绩报告 DDL
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-- Ticket #8: 交卷 CAS、保护性答案快照、评分与报告
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-- Migration: 004
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-- Prerequisites: 003-education-answer-idempotency.sql
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-- =============================================
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-- =============================================
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-- Preconditions
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-- =============================================
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-- Operator is expected to verify:
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-- SELECT COUNT(*) FROM information_schema.tables
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-- WHERE table_schema = DATABASE()
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-- AND table_name IN ('education_submit_idempotency',
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-- 'education_practice_report',
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-- 'education_practice_report_detail');
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-- Result MUST be 0 before executing this migration.
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--
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-- Verify prerequisite tables exist:
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-- SELECT COUNT(*) FROM information_schema.tables
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-- WHERE table_schema = DATABASE()
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-- AND table_name IN ('education_practice_session',
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-- 'education_practice_question',
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-- 'education_answer_idempotency');
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-- Result MUST be 3.
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-- =============================================
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-- PracticeQuestionDO: add protected answer snapshot columns
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-- =============================================
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-- Purpose: At session creation, snapshot correct_answer and explanation
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-- from the full CatalogQuestionDTO. These fields are NEVER exposed
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-- before submission (enforced by SafeQuestionRespVO allow-list and
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-- PracticeQuestionRespVO which does not include them).
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ALTER TABLE `education_practice_question`
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ADD COLUMN `correct_answer` TEXT DEFAULT NULL COMMENT '正确答案快照（不可在交卷前暴露）',
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ADD COLUMN `explanation` TEXT DEFAULT NULL COMMENT '解析快照（不可在交卷前暴露）';
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-- =============================================
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-- 交卷幂等表
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-- =============================================
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-- Purpose: Provide durable idempotency for submit-session commands.
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-- Same (tenant, user, operation, idempotency_key) + same request_hash → replay original report.
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-- Same key + different request_hash → conflict.
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-- Concurrent same-key inserts resolved by unique constraint race handling.
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--
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-- Indexes:
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-- uk_submit_idempotency — per-tenant, per-actor, per-operation uniqueness for idempotency key.
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-- INSERT during submit. DuplicateKeyException catch for concurrent-create race resolution.
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-- idx_submit_session — covers lookup by session for audit/debug.
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CREATE TABLE `education_submit_idempotency` (
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`id` BIGINT NOT NULL AUTO_INCREMENT COMMENT '主键',
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`tenant_id` BIGINT NOT NULL COMMENT '租户编号',
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`user_id` BIGINT NOT NULL COMMENT '交卷用户编号',
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`operation` VARCHAR(32) NOT NULL DEFAULT 'SUBMIT_SESSION'
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COMMENT '操作类型：SUBMIT_SESSION',
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`idempotency_key` VARCHAR(64) NOT NULL COMMENT '客户端幂等键（UUID）',
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`request_hash` VARCHAR(64) NOT NULL COMMENT '请求载荷 SHA-256 哈希',
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`session_id` BIGINT NOT NULL COMMENT '会话 ID',
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`report_id` BIGINT DEFAULT NULL COMMENT '关联的报告 ID（成功时有值）',
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`status` VARCHAR(20) NOT NULL DEFAULT 'ACCEPTED'
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COMMENT '状态：ACCEPTED-已接受, CONFLICT-冲突',
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`response_json` TEXT NOT NULL COMMENT '首次成功响应 JSON（用于重试重放）',
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`creator` VARCHAR(64) DEFAULT '' COMMENT '创建者',
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`create_time` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
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`updater` VARCHAR(64) DEFAULT '' COMMENT '更新者',
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`update_time` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
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`deleted` BIT(1) NOT NULL DEFAULT b'0' COMMENT '是否删除',
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PRIMARY KEY (`id`),
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UNIQUE KEY `uk_submit_idempotency` (`tenant_id`, `user_id`, `operation`, `idempotency_key`),
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KEY `idx_submit_session` (`tenant_id`, `session_id`)
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='教育-交卷幂等记录';
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-- =============================================
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-- 练习报告表（会话级）
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-- =============================================
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-- Purpose: Store the computed scoring result for a submitted session.
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-- One report per session. Immutable after creation.
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-- Question snapshots (stem, selectedAnswer, correctAnswer, explanation)
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-- are stored in report_details so source question edits don't affect history.
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--
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-- Indexes:
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-- uk_report_session — one report per session (unique).
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-- idx_report_tenant_user — covers paginated history queries for current tenant+user.
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-- idx_report_create_time — covers time-sorted listing.
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CREATE TABLE `education_practice_report` (
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`id` BIGINT NOT NULL AUTO_INCREMENT COMMENT '主键',
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`tenant_id` BIGINT NOT NULL COMMENT '租户编号',
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`user_id` BIGINT NOT NULL COMMENT '用户编号',
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`session_id` BIGINT NOT NULL COMMENT '会话 ID',
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`question_count` INT NOT NULL COMMENT '题目总数',
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`answered_count` INT NOT NULL DEFAULT 0 COMMENT '已答题数',
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`unanswered_count` INT NOT NULL DEFAULT 0 COMMENT '未答题数',
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`correct_count` INT NOT NULL DEFAULT 0 COMMENT '正确题数',
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`incorrect_count` INT NOT NULL DEFAULT 0 COMMENT '错误题数',
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`score` INT NOT NULL DEFAULT 0 COMMENT '得分（整数，满分 100 为基准）',
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`status` VARCHAR(20) NOT NULL DEFAULT 'SUBMITTED'
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COMMENT '报告状态：SUBMITTED',
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`creator` VARCHAR(64) DEFAULT '' COMMENT '创建者',
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`create_time` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
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`updater` VARCHAR(64) DEFAULT '' COMMENT '更新者',
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`update_time` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
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`deleted` BIT(1) NOT NULL DEFAULT b'0' COMMENT '是否删除',
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PRIMARY KEY (`id`),
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UNIQUE KEY `uk_report_session` (`session_id`),
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KEY `idx_report_tenant_user` (`tenant_id`, `user_id`),
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KEY `idx_report_create_time` (`create_time`)
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='教育-练习报告';
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-- =============================================
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-- 练习报告明细表（逐题结果）
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-- =============================================
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-- Purpose: Store per-question scoring results at submission time.
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-- Includes snapshot of stem, selectedAnswer, correctAnswer, and explanation
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-- so that history is stable even if source questions are later edited.
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--
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-- Indexes:
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-- uk_report_sequence — per-report uniqueness for question sequence.
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-- idx_detail_session — covers lookup by session for report assembly.
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CREATE TABLE `education_practice_report_detail` (
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`id` BIGINT NOT NULL AUTO_INCREMENT COMMENT '主键',
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`tenant_id` BIGINT NOT NULL COMMENT '租户编号',
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`user_id` BIGINT NOT NULL COMMENT '用户编号',
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`report_id` BIGINT NOT NULL COMMENT '报告 ID',
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`session_id` BIGINT NOT NULL COMMENT '会话 ID',
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`question_id` VARCHAR(64) NOT NULL COMMENT '原始题目 ID',
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`sequence` INT NOT NULL COMMENT '题目序号（1-based）',
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`stem` TEXT NOT NULL COMMENT '题干快照',
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`type` VARCHAR(32) NOT NULL COMMENT '题型快照',
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`difficulty` VARCHAR(32) DEFAULT NULL COMMENT '难度快照',
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`selected_answer` TEXT DEFAULT NULL COMMENT '学生已选答案',
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`correct_answer` TEXT DEFAULT NULL COMMENT '正确答案快照',
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`is_correct` BIT(1) NOT NULL DEFAULT b'0' COMMENT '是否正确',
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`explanation` TEXT DEFAULT NULL COMMENT '解析快照',
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`creator` VARCHAR(64) DEFAULT '' COMMENT '创建者',
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`create_time` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
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`updater` VARCHAR(64) DEFAULT '' COMMENT '更新者',
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`update_time` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
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`deleted` BIT(1) NOT NULL DEFAULT b'0' COMMENT '是否删除',
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PRIMARY KEY (`id`),
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UNIQUE KEY `uk_report_sequence` (`report_id`, `sequence`),
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KEY `idx_detail_session` (`session_id`)
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='教育-练习报告明细';
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-- =============================================
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-- Post-migration verification queries
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-- =============================================
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-- Verify new tables exist:
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-- SHOW CREATE TABLE education_submit_idempotency;
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-- SHOW CREATE TABLE education_practice_report;
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-- SHOW CREATE TABLE education_practice_report_detail;
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-- Verify columns added to question table:
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-- SELECT COLUMN_NAME, DATA_TYPE, COLUMN_DEFAULT
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-- FROM information_schema.COLUMNS
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-- WHERE TABLE_SCHEMA = DATABASE()
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-- AND TABLE_NAME = 'education_practice_question'
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-- AND COLUMN_NAME IN ('correct_answer', 'explanation');
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-- Verify unique keys are enforced:
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-- SHOW INDEX FROM education_submit_idempotency WHERE Key_name = 'uk_submit_idempotency';
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-- SHOW INDEX FROM education_practice_report WHERE Key_name = 'uk_report_session';
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-- SHOW INDEX FROM education_practice_report_detail WHERE Key_name = 'uk_report_sequence';
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-- Verify no orphan data (should be 0 after fresh migration):
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-- SELECT COUNT(*) FROM education_submit_idempotency;
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-- SELECT COUNT(*) FROM education_practice_report;
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-- SELECT COUNT(*) FROM education_practice_report_detail;
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