In this post, you’ll learn more about the MariaDB Error 1557 ER_FOREIGN_DUPLICATE_KEY with the details of the error message and why you receive this error
Maria DB Error Description
MariaDB Error 1557 – ER_FOREIGN_DUPLICATE_KEY with the sqlState 23000
Error Description for the MariaDB Error ER_FOREIGN_DUPLICATE_KEY
Upholding foreign key constraints for table ‘%s’, entry ‘%s’, key %d would lead to a duplicate entry