如何获取上次时间戳值：mysql

Question

price             create date
==========        ===================
1201.39978        2014-12-16 06:58:38
1201.39978        2014-12-16 07:00:14
1201.39978        2014-12-16 07:00:38
1266.99982        2015-01-29 07:45:13
1265.9            2015-01-29 07:47:13
1264.99986        2015-02-29 07:49:13
1264.19988        2015-02-29 07:51:13
1262.69976        2015-03-29 07:53:13
1263.99989        2015-04-29 07:55:13
1263.69974        2015-04-29 07:57:13

如何根据时间戳获取日期的最后定价..？ 请帮帮我

Answer 1

http://sqlfiddle.com/#!9/44b64/1

SELECT p.*
FROM prices p
LEFT JOIN prices p1
ON p.create_date < p1.create_date
  AND DATE(p.create_date) = DATE(p1.create_date)
WHERE p1.create_date IS NULL

Answer 2

SELECT price, 
       created 
FROM   (SELECT Max(created) AS maxts 
        FROM   table_name 
        GROUP  BY Date(created)) AS m 
       INNER JOIN table_name t 
         ON m.maxts = t.created;     

结果在此处：http://sqlfiddle.com/#!9/d3104/3

Answer 3

select price from yourtablename orderby create_at asc limit 1;