我无法编辑另一个表在mysql中有外键的表

Question

这是我在MySQL中的SQL代码：

create table Table1
(
  id varchar(2),
  name varchar(2),
  PRIMARY KEY (id)
);


Create table Table1_Addr
(
  addid varchar(2),
  Address varchar(2),
  PRIMARY KEY (addid)
);

Create table Table1_sal
(
  salid varchar(2),
  addid varchar(2),
  id varchar(2),
  PRIMARY KEY (salid),
  index(addid),
  index(id),
  FOREIGN KEY (addid) REFERENCES Table1_Addr(addid),
  FOREIGN KEY (id) REFERENCES Table1(id)
)

Table1和Table1_Addr是Table1_sal对这两个表有两个外键的两个表。

我的问题是我不能改变Table1的id字段和Table1_Addr的and字段

错误是：

#1451 - Cannot delete or update a parent row: a foreign key constraint
fails (`avl`.`table1_sal`, CONSTRAINT `table1_sal_ibfk_2` FOREIGN KEY (`id`)
REFERENCES `table1` (`id`))

编辑-答案是：

create table Table1
(
  id varchar(2),
  name varchar(2),
  PRIMARY KEY (id)
);


Create table Table1_Addr
(
  addid varchar(2),
  Address varchar(2),
  PRIMARY KEY (addid)
);

Create table Table1_sal
(
  salid varchar(2),
  addid varchar(2),
  id varchar(2),
  PRIMARY KEY (salid),
  index(addid),
  index(id),
  FOREIGN KEY (addid) REFERENCES Table1_Addr(addid)ON UPDATE CASCADE ON DELETE CASCADE,
  FOREIGN KEY (id) REFERENCES Table1(id)ON UPDATE CASCADE ON DELETE CASCADE
)

Answer 1

在外键定义之后添加ON UPATE CASCADE

    FOREIGN KEY (addid) REFERENCES Table1_Addr(addid) ON UPDATE CASCADE ON DELETE CASCADE,
  FOREIGN KEY (id) REFERENCES Table1(id) ON UPDATE CASCADE ON DELETE CASCADE

Answer 2

必须将外键设置为“更新cascade.Then”所有子行也将被更新

     Create table Table1_sal
(
  salid varchar(2),
  addid varchar(2),
  id varchar(2),
  PRIMARY KEY (salid),
  index(addid),
  index(id),
  FOREIGN KEY (addid) REFERENCES Table1_Addr(addid) 
   On delete cascade On Update cascade ,
  FOREIGN KEY (id) REFERENCES Table1(id) 
   On delete cascade On Update cascade
)

Answer 3

您无法更改Table1和Table1_Addr的主键(作为Table1_Addr的外键)的问题是关系数据库的正常行为，如MySQL，