MySQL Error 1215: Cannot add foreign key constraint

Question

I am trying to forward engineer my new schema onto my db server, but I can\'t figure out why I am getting this error. I\'ve tried to search for the answer here, but everyth

Answer 1

Be aware of the use of backquotes too. I had in a script the following statement

ALTER TABLE service ADD FOREIGN KEY (create_by) REFERENCES `system_user(id)`;

but the backquotes at the end were false. It should have been:

ALTER TABLE service ADD FOREIGN KEY (create_by) REFERENCES `system_user`(`id`);

MySQL give unfortunalty no details on this error...