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8 年
从一条巨慢SQL看基于Oracle的SQL优化(含PPT)
本次分享的内容是基于Oracle的SQL优化,以一条巨慢的SQL为例,从快速解读SQL执行计划、如何从执行计划中找到SQL执行慢的Root Cause、统计信息与cardinality问题、探索性能杀手Filter操作、如何进行逻辑重写让SQL起飞等多个维度进行解析,最终优化巨慢SQL语句,希望能够抛砖引玉,和大家一起探讨SQL优化方法。
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