全表扫描（Full Table Scan）是数据库查询中常见的性能杀手，尤其在数据量巨大的生产环境中，一条效率低下的 SQL 就足以引发连锁性的系统故障。为从根本上防范此类风险， 百度 智能云数据库在 MySQL 内核层面设计并实现了一套全表扫描动态管控机制，实现对低效 SQL 的实时检测、灵活拦截与预警记录，将运维控制权真正交到开发者以及 DBA 手中。

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Will Kenton is an expert on the economy and investing laws and regulations. He previously held senior editorial roles at Investopedia and Kapitall Wire and holds a MA in Economics from The New School ...

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Sarah Burris is a long-time veteran of political campaigns, having worked as a fundraiser and media director across the United States. She transitioned into reporting while working for Rock the Vote, ...