java - MySQL通过navicat给表中的某个字段加索引,这个地方应该怎么选择呀?
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PHP中文网 2017-04-18 10:15:25
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为什么只有这几个 没有index?

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洪涛

Index type
Index type

Peter_Zhu

This is the index type: normal is a normal index, unique is a unique index (columns with a unique index will have unique constraints and cannot have duplicate values, otherwise the insertion or update will fail), full text is a full-text index, only for English Strings are valid, but are invalid for Chinese (this kind of index is generally not used). Under normal circumstances, select normal.

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