mysql 设置主键自增语句alter table tableName modify id int auto_increment primary key版权声明：本文为zhanghuifangllove原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接和本声明。原文链接：https://blog.csdn.net/zhanghuifangllove/article/details/92578106