Question

在mysql中我有很多次，我用PHP表示。

现在我需要，如果时间，我表示，在一分钟内（差异）我想在（html）表中显示红色的时间。

    Row    |    Time
     1     |  10:10:11
     2     |  10:12:01   <--- THIS RED
     3     |  10:12:50   <--- THIS RED
     4     |  10:14:12

有什么方法可以用PHP做到这一点？现在我使用一个简单的mysql查询。选择....从....

我很感激所有事情

Answer 1

SELECT t1.Row,
       t1.Time,
       CASE WHEN t2.minute IS NOT NULL THEN 'Red' ELSE 'Black' END AS Color
FROM yourTable t1
LEFT JOIN
(
    SELECT CONCAT(SUBSTRING(Time, 1, 2), SUBSTRING(Time, 4, 2)) AS minute
    FROM yourTable
    GROUP BY CONCAT(SUBSTRING(Time, 1, 2), SUBSTRING(Time, 4, 2))
    HAVING COUNT(*) > 1
) t2
    ON CONCAT(SUBSTRING(t1.Time, 1, 2), SUBSTRING(Time, 4, 2)) = t2.minute

Answer 2

试试这个：

SELECT t1.`Row`,
       t1.`Time`,
       TIME_TO_SEC(TIMEDIFF(t2.`Time`, t1.`Time`)) AS Diff,
       CASE WHEN (TIME_TO_SEC(TIMEDIFF(t2.`Time`, t1.`Time`)) < 61 || TIME_TO_SEC(TIMEDIFF(t1.`Time`, t3.`Time`)) < 61) THEN 'Red' ELSE 'Blue' END AS Color
FROM myTable t1
LEFT JOIN myTable t2
    ON t2.`Row` = t1.`Row`+1
LEFT JOIN myTable t3
    ON t3.`Row` = t1.`Row`-1
    ORDER BY t1.`Row` ASC

FIDDLE DEMO

请在我的演示中考虑，我使用VARCHAR for Time。但是，如果您使用任何其他类型，这并不重要。查询有效。

Mysql和php如果时间差异小于1分钟

2 个答案: