请教个 mysql 单表查询走索引但是很慢的问题。 - V2EX

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remove

2 replies • 2021-03-06 14:18:56 +08:00

1

qiayue

PRO

Mar 2, 2021

1

看看两张表的 business_number 字段格式是否一致

2

sinmu

Mar 6, 2021

可以看看是不是真的走了索引，explain select * from table where a='a'

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