13 lines
418 B
SQL
13 lines
418 B
SQL
-- 修复答案保存问题
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-- 唯一索引 uk_assessment_item 已存在，无需再创建
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-- 验证索引
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SHOW INDEX FROM psy_assessment_answer;
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-- 如果有重复数据需要清理，可以执行以下语句（可选）：
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-- DELETE a FROM psy_assessment_answer a
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-- INNER JOIN psy_assessment_answer b
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-- WHERE a.assessment_id = b.assessment_id
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-- AND a.item_id = b.item_id
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-- AND a.answer_id < b.answer_id;
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