CREATE TABLE `movies`.`movie` ( `movie_id` INT(3) NULL AUTO_INCREMENT, `movie_name` VARCHAR(25) NULL, `movie_embedded_id` VARCHAR(50) NULL, `rating_no` INT(3) NULL, `movie_description` VARCHAR(50) NULL, PRIMARY KEY (`movie_id`(3))) ENGINE = InnoDB;
I keep getting this error:
#1089 – Incorrect prefix key; the used key part isn’t a string, the used length is longer than the key part, or the storage engine doesn’t
support unique prefix keys.
but I’ve got no idea what it means, anyone have a clue?
With the part
PRIMARY KEY (`movie_id`(3))
you are telling mysql to create a sub part key* on the first 3 letters of movie id. This only works for string types.
You need to use
PRIMARY KEY (`movie_id`)
without providing a length.
*Is this sure the query resulting in the error? Never saw that on a primary key, its used for indexes.