标签:png .com mys 删除 cas delete alt font 技术
约束
外键约束的要求
父表
字表
书写 FOREIGN KEY (pid) REFERENCES provinces (id) ON DELETE CA CASCADE
删除列 DELETE FROM provinces WHERE ID =1;
mysql 约束
原文地址:https://www.cnblogs.com/sineik/p/9136487.html