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Update 数据库索引.md#1127

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Snailclimb merged 1 commit intoSnailclimb:masterfrom
hallozhm:patch-1
Mar 15, 2021
Merged

Update 数据库索引.md#1127
Snailclimb merged 1 commit intoSnailclimb:masterfrom
hallozhm:patch-1

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此处有误,并非三个索引,图1中查到的是同一个索引所包含的列,执行计划中的type为index是按照索引进行全表扫描,并非使用了索引

@Snailclimb Snailclimb merged commit bedbc75 into Snailclimb:master Mar 15, 2021
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