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wqlm

wqlm

V2EX member #569641, joined on 2022-01-20 14:26:02 +08:00
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Mar 23, 2022
Replied to a topic by ilumer › MySQL › mysql 联合索引的 column 数量 会影响到 B+树的阶吗？
是的，因为一个 innodb page 默认大小 16K ，索引字段越多，一个 page 中能存储的数量就越小，导致树变高(树的阶变大)
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