Oracle Query帮助

Question

我有这张桌子

  ID          Date
  1   08/10/2009 11:20:00
  2   08/10/2009 12:06:06
  3   08/11/2009 13:03:10
  4   08/11/2009 01:20:00
  5   08/11/2009 15:41:23
  6   08/12/2009 14:22:20

我想回来：

Date          Count
08/10/2009     2
08/11/2009     3
08/12/2009     1

PL / SQL中的

。有什么想法吗？

Answer 1

SELECT  TRUNC(date) AS CreatedDate, COUNT(*) AS DateCount
FROM    mytable
GROUP BY
        TRUNC(date)
ORDER BY
        CreatedDate