I'm having some trouble understanding why I'm getting MySQL code error 150 for the following snippet:
-- Exercise Categories
CREATE TABLE Exercise_cat
(
ec_id INT NOT NULL AUTO_INCREMENT,
name VARCHAR(25),
PRIMARY KEY (ec_id)
);
-- This inserts fine
-- Exercise Descriptions
CREATE TABLE Exercise_desc
(
e_id INT NOT NULL AUTO_INCREMENT,
name VARCHAR(25),
ec_id INT NOT NULL,
cal_per_hour INT NOT NULL,
PRIMARY KEY (e_id),
FOREIGN KEY (ec_id) REFERENCES Excercise_cat(ec_id)
);
-- ERROR (foreign key constraint not formed)
I didn't leave off the column name, as in [1] [2] .
I have semicolons, as MySQL wants me to.
How would I fix my foreign key so that I can create the table?
you mean Exercise_cat
not Excercise_cat
CREATE TABLE Exercise_desc
(
e_id INT NOT NULL AUTO_INCREMENT,
name VARCHAR(25),
ec_id INT NOT NULL,
cal_per_hour INT NOT NULL,
PRIMARY KEY (e_id),
FOREIGN KEY (ec_id) REFERENCES Exercise_cat(ec_id)
);
The table you are referencing Excercise_cat
does not exists . But Exercise_cat exists.
So the following line should be corrected.
FOREIGN KEY (ec_id) REFERENCES Excercise_cat(ec_id)
^
|
+-- Remove this extra 'c'
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.