time_add
2011-05-15 12:20:15
2011-05-15 13:20:15
2011-05-16 12:20:15
2011-05-17 12:20:15
2011-05-17 2:20:15
2011-05-17 12:20:15怎么得到
2011-05-15
2011-05-16
2011-05-17
group by Format(time_add,"YYYY-MM-DD")
这样无效
2011-05-15 12:20:15
2011-05-15 13:20:15
2011-05-16 12:20:15
2011-05-17 12:20:15
2011-05-17 2:20:15
2011-05-17 12:20:15怎么得到
2011-05-15
2011-05-16
2011-05-17
group by Format(time_add,"YYYY-MM-DD")
这样无效
解决方案 »
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