将 HH:MM:SS 字符串转换为分钟数

Question

我有以下查询。

select cast(dateadd(minute, datediff(minute, TimeIn, TimeOut), 0) as time(0) )

我从两列中得到了格式为小时-分钟-秒的结果。我只想要 min 的格式。所以02:47:00会读167。

Answer 1

SQL服务器查询：

SELECT cast(substring('02:47:00',1,2) AS int)*60+
       cast(substring('02:47:00',4,2) AS int)+ 
       cast(substring('02:47:00',7,2) AS int)/60.0 AS minutes

MYSQL查询：

SELECT TIME_TO_SEC('02:47:00') / 60

结果：

| MINUTES |
-----------
|     167 |