關於「Cannot add foreign key constraint」標籤，搜尋引擎有相關的訊息討論：

MySQL Error Code 1215: "Cannot add foreign key constraint"www.percona.com › blog › dealing-mysql-error-code-121...MySQL Cannot Add Foreign Key Constraint - Stack Overflowstackoverflow.com › questions › mysql-cannot-add-foreig...How to fix MySQL error 1215 Cannot add foreign key