106 lines
3.0 KiB
MySQL
106 lines
3.0 KiB
MySQL
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-- 修复题目格式问题
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-- 问题：选项和答案包含 "A. " 前缀，导致答案判断失败
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-- ==========================================
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-- 1. 查看有问题的题目
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-- ==========================================
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SELECT
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id,
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question_type,
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question_content,
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options,
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correct_answer,
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exam_id
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FROM study_question
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WHERE
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-- 选项包含 "A. " 前缀的
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options LIKE '%"A. %'
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OR options LIKE '%"B. %'
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OR options LIKE '%"C. %'
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-- 或正确答案包含前缀的
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OR (question_type = 'single' AND correct_answer LIKE '%. %')
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ORDER BY exam_id, id;
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-- ==========================================
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-- 2. 手动修复示例（替换你的题目ID和内容）
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-- ==========================================
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-- 修复单选题（去除选项和答案的前缀）
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-- 示例：
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-- UPDATE study_question
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-- SET
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-- options = '["选项内容1","选项内容2","选项内容3"]', -- 去除 "A. "、"B. " 等前缀
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-- correct_answer = 'A' -- 只保留字母
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-- WHERE id = {题目ID};
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-- ==========================================
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-- 3. 批量修复脚本（谨慎使用！先备份！）
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-- ==========================================
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-- 备份表
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-- CREATE TABLE study_question_backup AS SELECT * FROM study_question;
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-- 注意：以下脚本需要根据实际数据调整，建议一条一条手动执行
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-- 修复考试14的题目（根据你的实际情况修改）
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-- 题目149
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UPDATE study_question
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SET
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options = REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(
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options,
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'"A. ', '"'),
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'"B. ', '"'),
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'"C. ', '"'),
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'"D. ', '"'),
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'"E. ', '"'),
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'"F. ', '"'),
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correct_answer = CASE
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WHEN correct_answer LIKE 'A. %' THEN 'A'
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WHEN correct_answer LIKE 'B. %' THEN 'B'
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WHEN correct_answer LIKE 'C. %' THEN 'C'
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WHEN correct_answer LIKE 'D. %' THEN 'D'
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WHEN correct_answer LIKE 'E. %' THEN 'E'
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WHEN correct_answer LIKE 'F. %' THEN 'F'
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ELSE correct_answer
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END
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WHERE exam_id = 14 AND question_type IN ('single', 'multiple');
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-- ==========================================
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-- 4. 验证修复结果
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-- ==========================================
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SELECT
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id,
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question_type,
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question_content,
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options,
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correct_answer
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FROM study_question
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WHERE exam_id = 14
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ORDER BY id;
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-- ==========================================
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-- 5. 检查学生答案是否也需要修复
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-- ==========================================
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SELECT
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sa.id,
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sa.question_id,
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sa.student_answer,
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sa.is_correct,
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q.correct_answer,
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q.question_type
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FROM study_student_answer sa
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JOIN study_question q ON sa.question_id = q.id
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WHERE sa.exam_id = 14
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ORDER BY sa.student_id, sa.question_id;
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-- 如果学生答案也包含前缀，也需要修复
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-- UPDATE study_student_answer
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-- SET student_answer = CASE
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-- WHEN student_answer LIKE 'A. %' THEN 'A'
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-- WHEN student_answer LIKE 'B. %' THEN 'B'
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-- WHEN student_answer LIKE 'C. %' THEN 'C'
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-- WHEN student_answer LIKE 'D. %' THEN 'D'
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-- ELSE student_answer
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-- END
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-- WHERE exam_id = 14;
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