60 lines
1.8 KiB
SQL
60 lines
1.8 KiB
SQL
USE study;
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-- ========================================
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-- 批量修复题目答案
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-- ========================================
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-- 方案1：设置默认答案 A,B（需要后续手动调整）
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-- 对于缺少答案的多选题，先设置一个默认答案，避免显示"暂无"
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UPDATE question
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SET correct_answer = 'A,B'
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WHERE id IN (227, 229, 236, 241)
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AND (correct_answer IS NULL OR correct_answer = '');
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-- 方案2：修复答案格式错误的题目
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-- id 205 的答案是 "A. 阿斯蒂芬收到"，应该改为 "A"
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UPDATE question
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SET correct_answer = 'A'
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WHERE id = 205;
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-- 验证修复结果
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SELECT
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q.id,
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e.exam_name,
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q.question_type,
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LEFT(q.question_content, 30) AS content,
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q.correct_answer,
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CASE
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WHEN q.correct_answer IS NULL OR q.correct_answer = '' THEN '❌ 空'
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WHEN q.question_type = 'multiple' AND q.correct_answer NOT LIKE '%,%' THEN '⚠️ 格式可疑'
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ELSE '✓ OK'
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END AS status
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FROM question q
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LEFT JOIN exam e ON q.exam_id = e.id
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WHERE e.exam_name LIKE '%Test%'
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AND q.question_type = 'multiple'
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ORDER BY q.id;
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-- ========================================
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-- 如果你知道每道题的正确答案，可以用下面的语句单独修改
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-- ========================================
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-- Test4 (id 227)
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-- UPDATE question SET correct_answer = 'A,B' WHERE id = 227;
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-- Test5 (id 229)
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-- UPDATE question SET correct_answer = 'A,B' WHERE id = 229;
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-- Test6 (id 236)
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-- UPDATE question SET correct_answer = 'A,B' WHERE id = 236;
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-- Test7 (id 241)
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-- UPDATE question SET correct_answer = 'A,B' WHERE id = 241;
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-- ========================================
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-- 完成后的检查清单
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-- ========================================
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-- ✓ 所有多选题都有正确答案
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-- ✓ 答案格式统一为 "A,B,C"（字母标签，逗号分隔）
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-- ✓ 学生端查看成绩时能正确显示答案
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