Can't create table (errno: 150) on FOREIGN KEY

Question

I saw a lot of same question but I couldn\'t solve my case.

If I run this code:

Answer 1

Tags.id_articls is a signed integer while Articl.id is an unsigned integer. MySQL requires referencing field to be exactly the same type. Make Tags.id_articls unsigned to have it work.

Additionally, the table names in the column lists are not allowed in MySQL. It is always clear which table is meant: first the referencing table and then the referenced table. So change

FOREIGN KEY(Tags.id_articls) REFERENCES Articls(Articls.id)

into

FOREIGN KEY(id_articls) REFERENCES Articls(id)

and it will work.

Answer 2

You need to declare both Articls.id and Tags.id_articls signed or unsigned