按小时统计的语句 转

表:issue 字段:
id:1
time:2012-04-01 08:15:00
count:12

。。。。。

按小时统计count总数,结果如下
1 2012-04-01 8:00~9:00 134
2 2012-04-01 9:00~10:00 134

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select DATE_FORMAT(time,'%Y-%m-%d %H:00'),sum(count)
from issue
group by DATE_FORMAT(time,'%Y-%m-%d %H:00')