mysql - 获取最新的行

Question

我正在尝试获取具有指定“拉”值的最新记录，然后按 imei 号码分组。但是我得到了错误的输出，时间与我数据库中的时间不匹配

这是我的标签。

    IMEI              TIME                      STATUS
    354851057191551   2013-06-25 10:11:30       pull getrestbyimei
    354851057191551   2013-06-25 10:10:36       Push getrestbyimei
    354851057234971   2013-06-25 10:10:34       Push getbookings
    351895053436612   2013-06-25 10:10:32       pull getrestbyimei
    351895053436612   2013-06-25 10:10:31       pull getrestbyimei

期望的输出:

        IMEI              TIME                      STATUS
        354851057191551   2013-06-25 10:11:30       pull getrestbyimei
        351895053436612   2013-06-25 10:10:32       pull getrestbyimei

我是这样尝试的:

SELECT imei as IMEI, MAX(FROM_UNIXTIME(timestamp)) as TIME, action as STATUS
    FROM testlog
    where action like  'pull%'
    GROUP BY imei
order by TIME asc

Answer 1

我认为您不需要 FROM_UNIXTIME 函数。

SELECT imei as IMEI, MAX(timestamp) as TIME, action as STATUS
    FROM testlog
    where action like  'pull%'
    GROUP BY imei
order by TIME asc

这是 SQL Fiddle Demo .