Question

我希望从昨天开始获得最大时间戳。将数据存储为日期时间。

Db布局是表格名称：收入

Coloumns：id，收入，时间戳

目前正在执行命令：

SELECT earnings, timestamp FROM earnings WHERE timestamp = (SELECT MAX(timestamp) FROM earnings)

现在我希望获得昨天最高的时间戳....请通过mySQL或PHP和mySQL告诉我这样做的最佳方法。

Answer 1

SELECT earnings, timestamp 
FROM earnings 
WHERE timestamp = (SELECT MAX(timestamp) 
                   FROM earnings
                   WHERE DATE(timestamp) = DATE_ADD(CURDATE(),INTERVAL -1 DAY))

或

SELECT  a.*
FROM    earnings a
        INNER JOIN
        (
            SELECT MAX(timestamp) max_Date
            FROM earnings
            WHERE DATE(timestamp) = DATE_ADD(CURDATE(),INTERVAL -1 DAY)
        ) b ON a.timestamp = b.max_Date

Answer 2

为什么每个人都喜欢亚选择这么多？

SELECT * FROM earnings ORDER BY timestamp DESC limit 1

第一次查询，

SELECT * FROM earnings WHERE timestamp < CURDATE() ORDER BY timestamp DESC limit 1

代表第二个

mySQL查询昨天的最大时间戳

2 个答案: