mysql - 使用时间格式选择 +- 2 分钟()

Question

我试图从我的到达时间表中选择的不是准确的到达时间，而是 -+ 2 分钟的查询:

SELECT route from arrivaltimes INNER JOIN stops
 ON arrivaltimes.stop_id=stops.stop_id 
WHERE weekday =  ?
and time_format(arrivaltime,'%H:%i')= time_format(curtime() ,'%H:%i')
and name LIKE ? 

如何选择 +- 2 分钟？

Answer 1

如果字段 arrivaltime 是一个 TIME 字段，这应该有效:

SELECT route
FROM arrivaltimes
INNER JOIN stops ON (arrivaltimes.stop_id = stops.stop_id)
WHERE
    weekday =  ?
    AND arrivaltime >= curtime() - INTERVAL 2 MINUTE
    AND arrivaltime <= curtime() + INTERVAL 2 MINUTE
    AND name LIKE ? 

或者您可以使用 BETWEEN运算符(operator):

SELECT route
FROM arrivaltimes
INNER JOIN stops ON (arrivaltimes.stop_id = stops.stop_id) 
WHERE
    weekday =  ?
    AND arrivaltime BETWEEN curtime() - INTERVAL 2 MINUTE AND curtime() + INTERVAL 2 MINUTE
    AND name LIKE ?