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对于流水线工作方式， 10 个人肯定会比 5 个人快吗？奔腾流水线 14 步，基准处理器 4 步。 May 22, 2015
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Apr 6, 2016 Replied to a topic by ivito MySQL Mysql 有索引的情况下依然几乎扫描全表 |
@rqrq 第一种无效，第二种方法快了一倍，但依然接近全表扫描，快出的部分应该是临时表只 select 了 id
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