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NoteBook/MySQL/5. 索引失效.md
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wonder 22728239a8 🔄Update: MySQL
2025-09-26 13:07:32 +08:00

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索引失效

  • 左模糊匹配
  • 对索引使用函数
  • 隐式类型转换
    • 表中 String ，传入 Int
  • 联合索引非最左匹配
  • OR 子句
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