Cannot add or update a child row: a foreign key constraint fails (zqbp.zqbp_custom, CONSTRAINT zqbp_custom_ibfk_1 FOREIGN KEY (custom_trade) REFERENCES zqbp_industry (industry_id))
《《《《《《《《《《《《《《《《《《《《《《《《《
zqbp_custom_ibfk_1这是什么？我明白这是外键约束的异常，但是不明白为什么给zqbp_custom加上_ibfk_1？
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
Foreign key constraints, usually the foreign key is wrong