mysql使用varchar值将行转换为列

flseospp 于 2021-07-24 发布在 Java

关注(0)|答案(1)|浏览(247)

我有这样的table：

+-------+------------+---------+-------------------------+
| Id    | Mission    | Status  | Time                    |
+-------+------------+---------+-------------------------+
| 1     | Mission 1  | Start   | 2020-06-01 09:50:00     |
| 2     | Mission 1  | Running | 2020-06-01 10:50:00     |
| 3     | Mission 1  | Stop    | 2020-06-01 11:50:00     |
+-------+------------+---------+-------------------------+

我的期望输出是

+------------+-------------------------+---------------------+---------------------+
| Mission    | Start                   | Running             | Stop                |
+------------+-------------------------+---------------------+---------------------+
| Mission 1  | 2020-06-01 09:50:00     | 2020-06-01 10:50:00 | 2020-06-01 11:50:00 |
+------------+-------------------------+-------------------------------------------+

我发现了一些与我的问题有关的问题，但这些问题与我的不完全一致。

sql mysql mariadb

来源：https://stackoverflow.com/questions/62589440/mysql-convert-row-to-column-with-varchar-value

1条答案

按热度按时间

cs7cruho1#

select mission, 
       max(case when status = 'Start' then time end) as `Start`,
       max(case when status = 'Running' then time end) as Running,
       max(case when status = 'Stop' then time end) as Stop
from your_table
group by mission

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mysql使用varchar值将行转换为列

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