今天我们来聊聊让无数开发者又爱又恨的——数据库索引。 别急，今天我就通过10个问题，带你彻底搞懂索引的奥秘！ 希望对你会有所帮助。 一、什么是索引？为什么需要索引？1.1 索引的本质 简单来说，索引就是数据的目录。

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