在間隔Mysql的選擇時間戳

Question

我有這樣

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

表我要選擇的TPS值和時間戳，使得時間戳在1分鐘內的差異選擇。

我如何在mysql中做..

Answer 1

最後我做到了，這goes-

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 

最初我試着像，

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 

看到DEMO

注意：它的工作翅膀除了最後一條記錄沒有被檢索。

同樣的結果與

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 2

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

Answer 3

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