MVC5 HTML将列作为表头？

Posted 2023-03-27

【中文标题】MVC5 HTML将列作为表头？

【英文标题】：MVC5 HTML make column as table header?

【发布时间】：2021-01-23 21:17:45

【问题描述】：

查看我数据库中的这张表：

==============================
|^student |^Subject |^Result |
==============================
| name1   | math    | pass   |
==============================
| name1   | physics | pass   |
==============================
| name1   | Biology | faille |
==============================
| name2   | math    | pass   |
==============================
| name2   | physics | faille |
==============================
| name2   | Biology | pass   |
==============================

通过使用 MVC 5、html 和 SQL Server 2017，我可以在索引页面中这样：

======================================
|^student | Math | Physics | Biology |
======================================
| name1   | pass | pass    | faille  |
======================================
| name2   | pass | faille  | pass    |
======================================

提前谢谢你。

【问题讨论】：

当然。枢轴，或分组，或挑选你的毒药。请更加具体和详细，因为您如何做到这一点取决于您的消费者 - 存储过程、实体框架或其他一些 ORM 或普通查询。

【参考方案1】：

你可以做条件聚合：

select student,
    max(case when subject = 'math'    then result end) math,
    max(case when subject = 'physics' then result end) physics,
    max(case when subject = 'biology' then result end) biology
from mytable
group by student