[mysqld]
wait_timeout=31536000
interactive_timeout=31536000
重启生效，需要同时修改这两个参数。
openxtiger
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zhouweideshijie：
为什么在join的时候需要(select distinct t ...
mysql的exists与inner join 和 not exists与 left join 性能差别惊人 -
openxtiger：
太强了，一点都看不懂
看看谁聪明，类游戏寻找算法 -
metaphy：
无解. 定义n(A)为从A点发出的射线数, 若有解,则n(0, ...
看看谁聪明，类游戏寻找算法 -
ddccjjwwjj：
都不可以用 extjs5 具体用法怎么写
extjs 实现图片HTML5图片上传 -
openxtiger：
可以呀，但你做成连接池的时候，连接关闭时，只是还回给连接池，实 ...
mysql 必要的配置
The last packet successfully received from the server was 596,688 milliseconds a
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