240 lines
7.9 KiB
SQL
240 lines
7.9 KiB
SQL
-- ====================================================
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-- 统一题库和考试题目格式，确保数据一致性
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-- ====================================================
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-- 问题：从题库导入题目后显示没有题目
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-- 原因：数据格式不一致或字段为空
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-- ====================================================
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-- 第1步：检查考试题目
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-- ====================================================
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-- 查看考试和题目数量
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SELECT
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e.id AS 考试ID,
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e.exam_name AS 考试名称,
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e.question_count AS 记录题数,
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COUNT(q.id) AS 实际题数,
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CASE
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WHEN e.question_count = COUNT(q.id) THEN '✓ 一致'
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WHEN e.question_count > COUNT(q.id) THEN '❌ 记录比实际多'
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WHEN e.question_count < COUNT(q.id) THEN '❌ 实际比记录多'
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END AS 状态
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FROM study_exam e
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LEFT JOIN study_question q ON e.id = q.exam_id
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GROUP BY e.id, e.exam_name, e.question_count
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ORDER BY e.create_time DESC
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LIMIT 10;
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-- 查看题目详情
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SELECT
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q.id AS 题目ID,
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q.exam_id AS 考试ID,
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e.exam_name AS 考试名称,
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q.question_type AS 题型,
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LEFT(q.question_content, 30) AS 题目内容,
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q.options AS 选项JSON,
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q.correct_answer AS 正确答案,
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q.score AS 分值,
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q.source_type AS 来源,
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q.sort_order AS 排序
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FROM study_question q
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LEFT JOIN study_exam e ON q.exam_id = e.id
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WHERE e.exam_name LIKE '%Test%' -- 根据考试名称过滤
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ORDER BY q.exam_id, q.sort_order;
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-- ====================================================
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-- 第2步：检查数据完整性问题
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-- ====================================================
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-- 检查缺失必填字段的题目
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SELECT
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'考试题目' AS 来源,
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q.id,
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q.exam_id,
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CASE
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WHEN q.question_type IS NULL OR q.question_type = '' THEN '❌ 题型为空'
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WHEN q.question_content IS NULL OR q.question_content = '' THEN '❌ 题干为空'
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WHEN q.correct_answer IS NULL OR q.correct_answer = '' THEN '❌ 答案为空'
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WHEN q.score IS NULL OR q.score = 0 THEN '❌ 分值为空或0'
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WHEN q.options IS NULL OR q.options = '' THEN '⚠️ 选项为空'
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ELSE '✓ 完整'
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END AS 问题
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FROM study_question q
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WHERE q.question_type IS NULL OR q.question_type = ''
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OR q.question_content IS NULL OR q.question_content = ''
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OR q.correct_answer IS NULL OR q.correct_answer = ''
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OR q.score IS NULL OR q.score = 0
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ORDER BY q.exam_id, q.id;
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-- 检查题库题目
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SELECT
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'题库题目' AS 来源,
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i.id,
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i.bank_id,
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CASE
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WHEN i.question_type IS NULL OR i.question_type = '' THEN '❌ 题型为空'
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WHEN i.question_content IS NULL OR i.question_content = '' THEN '❌ 题干为空'
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WHEN i.correct_answer IS NULL OR i.correct_answer = '' THEN '❌ 答案为空'
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WHEN i.score IS NULL OR i.score = 0 THEN '❌ 分值为空或0'
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WHEN i.options IS NULL OR i.options = '' THEN '⚠️ 选项为空'
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ELSE '✓ 完整'
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END AS 问题
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FROM study_question_bank_item i
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WHERE i.question_type IS NULL OR i.question_type = ''
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OR i.question_content IS NULL OR i.question_content = ''
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OR i.correct_answer IS NULL OR i.correct_answer = ''
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OR i.score IS NULL OR i.score = 0
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ORDER BY i.bank_id, i.id;
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-- ====================================================
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-- 第3步：检查options字段格式
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-- ====================================================
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-- 查看选项格式（应该是JSON数组格式）
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SELECT
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'考试题目' AS 来源,
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id,
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question_type,
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LEFT(question_content, 30) AS 题目,
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options,
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CASE
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WHEN options IS NULL THEN '❌ NULL'
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WHEN options = '' THEN '❌ 空字符串'
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WHEN options LIKE '[%]' THEN '✓ JSON数组'
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WHEN options LIKE '{%}' THEN '⚠️ JSON对象'
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ELSE '❌ 其他格式'
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END AS 格式检查
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FROM study_question
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WHERE question_type IN ('single', 'multiple')
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AND (options IS NULL OR options = '' OR NOT (options LIKE '[%]'))
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LIMIT 20;
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-- ====================================================
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-- 第4步：修复空数据
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-- ====================================================
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-- 为题型为空的题目设置默认值
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-- UPDATE study_question
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-- SET question_type = 'single'
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-- WHERE question_type IS NULL OR question_type = '';
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-- 为分值为0或NULL的题目设置默认分值
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UPDATE study_question
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SET score = 5
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WHERE score IS NULL OR score = 0;
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UPDATE study_question_bank_item
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SET score = 5
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WHERE score IS NULL OR score = 0;
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-- 为排序为空的题目设置排序
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SET @row_number = 0;
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UPDATE study_question q
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JOIN (
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SELECT id, exam_id, (@row_number:=IF(@exam_id=exam_id, @row_number+1, 1)) AS new_order, (@exam_id:=exam_id)
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FROM study_question
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ORDER BY exam_id, IFNULL(sort_order, 999), id
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) AS ranked ON q.id = ranked.id
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SET q.sort_order = ranked.new_order
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WHERE q.sort_order IS NULL;
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-- ====================================================
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-- 第5步：同步考试题量和总分
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-- ====================================================
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-- 重新计算每个考试的题量和总分
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UPDATE study_exam e
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LEFT JOIN (
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SELECT
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exam_id,
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COUNT(*) AS actual_count,
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SUM(IFNULL(score, 0)) AS actual_score
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FROM study_question
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GROUP BY exam_id
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) AS stats ON e.id = stats.exam_id
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SET
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e.question_count = IFNULL(stats.actual_count, 0),
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e.total_score = IFNULL(stats.actual_score, 0);
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-- ====================================================
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-- 第6步：验证修复结果
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-- ====================================================
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-- 查看修复后的考试信息
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SELECT
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e.id,
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e.exam_name,
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e.question_count AS 题量,
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e.total_score AS 总分,
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COUNT(q.id) AS 实际题量,
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SUM(IFNULL(q.score, 0)) AS 实际总分,
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CASE
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WHEN e.question_count = COUNT(q.id) AND e.total_score = SUM(IFNULL(q.score, 0)) THEN '✓ 正确'
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ELSE '❌ 不一致'
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END AS 状态
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FROM study_exam e
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LEFT JOIN study_question q ON e.id = q.exam_id
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GROUP BY e.id
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ORDER BY e.create_time DESC
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LIMIT 10;
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-- 查看题目完整性
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SELECT
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COUNT(*) AS 总题目数,
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SUM(CASE WHEN question_type IS NOT NULL AND question_type != '' THEN 1 ELSE 0 END) AS 有题型,
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SUM(CASE WHEN question_content IS NOT NULL AND question_content != '' THEN 1 ELSE 0 END) AS 有题干,
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SUM(CASE WHEN correct_answer IS NOT NULL AND correct_answer != '' THEN 1 ELSE 0 END) AS 有答案,
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SUM(CASE WHEN score IS NOT NULL AND score > 0 THEN 1 ELSE 0 END) AS 有分值,
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SUM(CASE WHEN sort_order IS NOT NULL THEN 1 ELSE 0 END) AS 有排序
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FROM study_question;
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-- ====================================================
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-- 第7步：标准化数据格式
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-- ====================================================
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-- 确保多选题答案格式为 "A,B,C" （逗号分隔，无空格）
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UPDATE study_question
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SET correct_answer = REPLACE(REPLACE(correct_answer, ', ', ','), ' ,', ',')
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WHERE question_type = 'multiple';
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UPDATE study_question_bank_item
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SET correct_answer = REPLACE(REPLACE(correct_answer, ', ', ','), ' ,', ',')
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WHERE question_type = 'multiple';
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-- 确保判断题答案格式为 "正确" 或 "错误"
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UPDATE study_question
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SET correct_answer = CASE
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WHEN LOWER(correct_answer) IN ('true', 't', '1', 'yes', '对') THEN '正确'
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WHEN LOWER(correct_answer) IN ('false', 'f', '0', 'no', '错') THEN '错误'
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ELSE correct_answer
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END
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WHERE question_type = 'judge';
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UPDATE study_question_bank_item
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SET correct_answer = CASE
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WHEN LOWER(correct_answer) IN ('true', 't', '1', 'yes', '对') THEN '正确'
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WHEN LOWER(correct_answer) IN ('false', 'f', '0', 'no', '错') THEN '错误'
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ELSE correct_answer
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END
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WHERE question_type = 'judge';
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-- ====================================================
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-- 完成！执行说明
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-- ====================================================
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-- 1. 依次执行上面的检查SQL，找出问题
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-- 2. 执行修复SQL（UPDATE语句）
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-- 3. 执行验证SQL，确认修复成功
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-- 4. 重新刷新后台页面
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-- 5. 重新创建考试并导入题目测试
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-- 注意：执行UPDATE前建议备份数据库！
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