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over-mysql 相同ID 的 相邻时间拼接

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Release: 2016-06-06 09:42:33
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我现在有个问题困扰很久了: mysql数据库,在一张表内,时间经过了一次处理,即同一agent_id下,一个小时内“切割”分开了几段来显示了,具体如下图,图中毫秒处切了.999的数据,现在想要拼接起来,即:同一agent_id,连续的时间拼接起来,作为一段时间,时间长(laststatus_tilelen相加),用存储过程要怎么实现? 或者用sql语句怎么实现? 这里有位高手写了一个:http://blog.csdn.net/danielinbiti/article/details/43031193,我把这个移植进去后发现,在秒数位59的时候,和下一时间段没有拼接成功,orader by 需要换成id才不会有null值,可能我哪里错了,没有实现,
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