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OrderID, OrderTime, OrderItem
1, 1 am, Orange
1, 2 am, Apple
2, 3 am, Grape
3, 2 am, Apple
3, 3 am, Coconut
1, 5 am, Banana
1, 6 am, Apple
以上是原表。下面是我想要的表格。如果订单ID连续不变,我想将订单时间更改为最短时间。替换sql表中的值
OrderID, OrderTime, OrderItem
1, 1 am, Orange
1, 1 am, Apple
2, 3 am, Grape
3, 2 am, Apple
3, 2 am, Coconut
1, 5 am, Banana
1, 5 am, Apple
@william,列OrderTime的类型是什么? – 2011-02-09 09:04:49