How can I avoid getting this MySQL error Incorrect column specifier for column topic_id ?
MySQL Error...
#1063 - Incorrect column spec
To use AUTO_INCREMENT
you need to deifne column as INT
or floating-point types, not CHAR
.
AUTO_INCREMENT
use only unsigned value, so it's good to use UNSIGNED
as well;
CREATE TABLE discussion_topics (
topic_id INT NOT NULL unsigned AUTO_INCREMENT,
project_id char(36) NOT NULL,
topic_subject VARCHAR(255) NOT NULL,
topic_content TEXT default NULL,
date_created DATETIME NOT NULL,
date_last_post DATETIME NOT NULL,
created_by_user_id char(36) NOT NULL,
last_post_user_id char(36) NOT NULL,
posts_count char(36) default NULL,
PRIMARY KEY (topic_id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 AUTO_INCREMENT=1;