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mysql-急急急，求sql大神帮忙解决

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Release： 2016-06-06 09:34:52
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mysqlgps数据sql

各位大神们，现在有两张表realtime（send_time,range,oil）和gps（send_time,speed），我要把这两张表的数据汇总到sum表中，sum表的字段有year,month,day,hour,max(range)-min(range),avg(oil),max(speed),avg(speed)，sum表记录的是每小时的数据，年月日小时就是send_time里面的，前两张表是每10秒的数据，他们每条数据都是一一对应的，sum表用的是是组合主键，有年月日小时这4个主键，我用的mysql，达到这一操作的sql语句要怎么写啊，我之前想写成一条，总写不好，后来分2条写，第二个update语句又不知道怎么写了，谢谢帮助我的各位大神

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mysql gps 数据 sql
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