mysql集群，可以实现纵向与横向集群，还短啊，已经很长了 -mysql cluster, you can achieve vertical and horizontal clusters, but also short-ah, has a very long

一篇关于数据库纵表转横表，横表转纵表的学习文档，本人总结，非常适合于初学者。-A turn about the the database longitudinal table cross table cross table turn vertical table learning document, I have summarized, very suitable for beginners.