如何在几天内选择一个独特的ip（每天1个独特的ip）？

Question

结构表：

date  (datetime)
ip    (varchat,50)

我有疑问

SELECT * FROM Table GROUP BY ip Order by date Desc

请告诉我如何在几天内选择一个独特的ip（每天1个独特的ip）？

我需要获得下一个结果：

2013-02-14 17:14:25    31.132.154.142.
2013-02-14 17:15:01    31.132.154.142.
2013-02-13 16:40:47    31.132.154.142.

我需要每天获得独特的IP

Answer 1

SELECT DISTINCT(ip) FROM Table GROUP BY date Order by date Desc

Answer 2

SELECT MAX(`date`),`ip` FROM Table GROUP BY `ip`,DATE(`date`)

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