Question

I’m trying to create a the following table using MySQL:

CREATE TABLE registrations (
    eventNumber CHAR(3) UNIQUE NOT NULL
        CHECK (EXISTS (SELECT eventNumber FROM events)),
    employeeNumber CHAR(5) UNIQUE NOT NULL 
        CHECK (EXISTS (SELECT employeeNumber FROM employees)),

    PRIMARY KEY(eventNumber , employeeNumber ),

    FOREIGN KEY (eventNumber) REFERENCES eventNumber (employees)
        ON UPDATE RESTRICT 
        ON DELETE RESTRICT,
    FOREIGN KEY (employeeNumber ) REFERENCES employeeNumber(employees)
        ON UPDATE RESTRICT 
        ON DELETE RESTRICT  
) ENGINE=InnoDB;

However, I get a can’t create table error (1005) when I run the command. What might be going wrong here?

Answer 1

For reference, I got the REFERENCES statement wrong.

It should in fact read:

REFERENCES <table name>(<attribute name>)