sql列转行查询

Posted 2020-10-04 java_pro

test表：

执行列转行sql：

select
    student,
    sum(case Course when \'语文\' then Score else null end) 语文,
    sum(case Course when \'数学\' then Score else null end) 数学,
    sum(case Course when \'英语\' then Score else null end) 英语
from 
    test 
group by 
    student

得到结果：