Mysql foreign key by non unique key -- how is that possible?(非唯一键的Mysql外键——这怎么可能?)

How to correctly add Foreign Key constraints to SQLite DB using SQLAlchemy(如何使用 SQLAlchemy 正确地将外键约束添加到 SQLite DB)

on cascade delete on a table with two FK to the same table(在具有两个 FK 到同一个表的表上级联删除)

The INSERT statement conflicted with the FOREIGN KEY constraint. The conflict occurred in database(INSERT 语句与 FOREIGN KEY 约束冲突.数据库发生冲突)

SQL Server 2008 - Multiple Cascading FK#39;s - Do i need a trigger?(SQL Server 2008 - 多个级联 FK - 我需要触发器吗?)

MySQL - Foreign key on delete set null in not null field(MySQL - 在非空字段中删除设置空的外键)

Does SQLite coupled with NHibernate support referential integrity / foreign keys?(SQLite 与 NHibernate 结合是否支持参照完整性/外键?)

How to extract cross databases references using scriptdom API(如何使用 scriptdom API 提取跨数据库引用)

Adding foreign key to existing table gives error 1050 table already exists(将外键添加到现有表会导致错误 1050 表已存在)

Django models.py Circular Foreign Key(Django models.py 循环外键)

MySQL - Cannot add or update a child row: a foreign key constraint fails(MySQL - 无法添加或更新子行:外键约束失败)

MySQL Syntax in creating Foreign Key(MySQL 创建外键的语法)

How to use quot;central columnsquot; in phpmyadmin?(如何使用“中心柱在 phpmyadmin 中?)

MySQL - Unique foreign key(MySQL - 唯一外键)

SQL Server 2000 - Query a Table’s Foreign Key relationships(SQL Server 2000 - 查询表的外键关系)

Laravel - add foreign key on existing table with data(Laravel - 在现有表上添加外键和数据)

Query to find foreign keys(查询以查找外键)

Why aren#39;t my sqlite3 foreign keys working?(为什么我的 sqlite3 外键不起作用?)

Partitioning mySQL tables that has foreign keys?(对具有外键的 mySQL 表进行分区?)

Understanding / mySQL aka tricking ForeignKey relationships in Django(理解/mySQL 又名欺骗 Django 中的 ForeignKey 关系)