mysql - 在datetime和group中选择小时

Question

我有一个ShoppingDates的日期时间列。

假设我有1000行

7/18/2012 5:33:39 PM

2012年7月16日下午6:64:39

7/14/2012 7:34:39 PM

7/13/2012 8:30:39 PM

7/13/2012 8:37:39 PM

ECT ....

我想计算每次在一小时时间内出现的次数

so 5:00 p.m - 5:59:59 pm
so 6:00 p.m - 6:59:59 pm
so 7:00 p.m - 7:59:59 pm
so 8:00 p.m - 8:59:59 pm

所以在上面的结果中我会得到

1|5pm-6pm
1|6pm-7pm
1|7pm-8pm
2|8pm-9pm

感谢任何帮助。

谢谢！

Answer 1

我怀疑你只想要这样的东西：

SELECT HOUR(ShoppingDate), COUNT(*) FROM YourTable
GROUP BY HOUR(ShoppingDate)

Answer 2

试试这个

SELECT 
  CONCAT( HOUR(ShoppingDate), ' to ', CONCAT( HOUR(ShoppingDate), ':59:59' ) ) as time_frame,
  COUNT(*) 
FROM 
  temp
GROUP BY 
  DATE(ShoppingDate), 
  HOUR(ShoppingDate)

这是SQLfiddle

注意：我认为ShoppingDate是一个日期时间字段