CHECK constraint in MySQL is not working

Question

First I created a table like

CREATE TABLE Customer (
  SD integer CHECK (SD > 0),
  Last_Name varchar (30),
  First_Name varchar(30)
);

Answer 1

As mentioned by joanq MariaDB now seems to support CHECK constraints among other goodies:

"Support for CHECK CONSTRAINT (MDEV-7563)."

https://mariadb.com/kb/en/mariadb/mariadb-1021-release-notes/