MySQL解决sending data的方法
今天在用MySQL的show processlist;语句查看的时候，发现有好几个sending data出现，都是查询语句引起的。网上查了一下，说是有可
今天在用MySQL的show processlist;语句查看的时候，发现有好几个sending data出现，都是查询语句引起的。
网上查了一下，说是有可能由于key_buffer设置引起的，结果就修改了这个设置，，重启MySQL服务之后发现无效。
之后发现sending data的语句都是select语句，于是怀疑和select有关，检查了一下发现是查询的字段没有建立索引，于是就建立了个索引，解决了这个问题。
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