Question

全部，我有一个名为duration的MySQL表，其中包含一天内访问过的不同位置的名称和总持续时间。我需要总计时间并为每个人显示它们（以小时，分钟，秒格式）。我相信我需要先转换为秒，然后求和并转换回hh：mm：ss）但我正在努力使用正确的SQL代码（不想使用存储过程）。任何帮助表示赞赏。

FROM jenkins/jenkins:lts
RUN apt-get update && apt-get install -y maven

即。 Jack的总持续时间04：28：37，Stacy的总持续时间22:56:34

Answer 1

select name, SEC_TO_TIME( SUM( time_to_sec( duration ) ) ) 
from yourtable 
group by name;

例如 - 获得总和：

MariaDB [(none)]> select SEC_TO_TIME(sum(time_to_sec( duration ))) from ( select '01:00:00' as duration union all select '00:35:03' as duration ) as test;
+-------------------------------------------+
| SEC_TO_TIME(sum(time_to_sec( duration ))) |
+-------------------------------------------+
| 01:35:03.000000                           |
+-------------------------------------------+
1 row in set (0.00 sec)

MariaDB [(none)]> select TIME_FORMAT(SEC_TO_TIME(sum(time_to_sec( duration ))),'%H:%i:%S') from ( select '01:00:00' as duration union all select '00:35:03' as duration ) as test;
+-------------------------------------------------------------------+
| TIME_FORMAT(SEC_TO_TIME(sum(time_to_sec( duration ))),'%H:%i:%S') |
+-------------------------------------------------------------------+
| 01:35:03                                                          |
+-------------------------------------------------------------------+
1 row in set (0.00 sec)

测试组总和

MariaDB [(none)]> select name,TIME_FORMAT(SEC_TO_TIME(sum(time_to_sec( duration ))),'%H:%i:%S') from ( select 'a' as name, '01:00:00' as duration union all select 'a' as name, '00:35:03' as duration union all select 'b' as name, '05:26:00' as duration ) as test group  by name;
+------+-------------------------------------------------------------------+
| name | TIME_FORMAT(SEC_TO_TIME(sum(time_to_sec( duration ))),'%H:%i:%S') |
+------+-------------------------------------------------------------------+
| a    | 01:35:03                                                          |
| b    | 05:26:00                                                          |
+------+-------------------------------------------------------------------+
2 rows in set (0.00 sec)

求和持续时间值（MySQL）

1 个答案: