Question

我有一张这样的表

CREATE TABLE `TPS_INFO` (
    `TPS` INT(10) NULL DEFAULT NULL,
    `AT_TIME` TIMESTAMP NOT NULL 
              DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
)

我想选择TPS值和时间戳，以便在1分钟内选择时间戳。

我如何在mysql中执行此操作..

Answer 1

select *,TIMESTAMPDIFF(SECOND,t1.AT_TIME,t2.AT_TIME) AS diff from tps_info t1 , tps_info  t2 having diff='60'

Answer 2

最后我做到了，在这里 -

Select m.tps,m.at_time from TPS_info m, tps_info c 
where (date_add(m.at_time, INTERVAL 1 MINUTE) = c.at_time) OR
  (date_add(m.at_time, INTERVAL -1 MINUTE) = c.at_time)
group by m.at_time
order by m.at_time

最初我尝试，

Select m.tps,m.at_time from TPS_info m, tps_info c 
where date_add(m.at_time, INTERVAL 1 MINUTE) = c.at_time

请参阅DEMO

注意：它的工作正常，但最后一条记录没有被检索。

与

相同的结果

Select m.tps,m.at_time from TPS_info m, tps_info c 
where 60 = TIME_TO_SEC( TIMEDIFF( m.at_time, c.at_time ) )

Answer 3

select * from TPS_INFO where TIMESTAMPDIFF(SECOND, AT_TIME,NOW()) < 60

Mysql按间隔选择时间戳

3 个答案: