引入FOREIGN KEY约束可能会导致循环或多个级联路径。在DELETE NO ACTION或UPDATE NO ACTION上指定，或修改其他FOREIGN KEY约束。 [英] Introducing FOREIGN KEY constraint may cause cycles or multiple cascade paths. Specify on DELETE NO ACTION or on UPDATE NO ACTION, or modify other FOREIGN KEY constraints.

问题描述

error occurred while creating database by code first

我尝试了什么：



首先按代码创建数据库时发生错误

What I have tried:

error occurred while creating database by code first

推荐答案

你必须做它说的。您正在尝试创建可能级联到循环或多个路径的外键，而SQL不喜欢它。

You have to do what it says. You are trying to create a foreign key that will possibly cascade into a loop or into multiple paths and SQL does not like it.

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