sql--SQL Server--行转列、列转行、多行转成一列、多列转成一行

https://blog.csdn.net/wyqwilliam/article/details/82559023
https://blog.csdn.net/qq_39774060/article/details/80618094

https://www.cnblogs.com/LiZhongZhongY/p/10930440.html