使用 MyISAM 存储引擎的高级 trafic 服务器, 哪个查询在查询优化方面是好的?
原文:Which Query is good in query optimization as per high trafic server with MyISAM storage engine?
原文:Which Query is good in query optimization as per high trafic server with MyISAM storage engine?
下面是两个查询。 两种查询按查询优化角度排列,其中一种是好的。 //查询 1 UPDATE `Cable_name'SET'clun'= 455 `row_id'= 433200;/查询 2 UPDATE `Cable_name'SET '.