代码 sql 行命令错误中的 Mysql 错误语法

Question

mysql> CREATE TABLE Poster (
->   id smallint(6) unsigned NOT NULL AUTO_INCREMENT,
->   titre VARCHAR(200) NOT NULL,
->   description text NOT NULL,
->   image_link text NOT NULL,
->   nb_commentaires int unsigned,
->   nb_likes int unsigned,
->   user_id smallint(6) DEFAULT NOT NULL,
->   date_cree timestamp,
->   PRIMARY KEY (id) NOT NULL,
-> ) ENGINE=InnoDB;

ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'NOT NULL, date_cree timestamp, PRIMARY KEY (id) NOT NULL, ) ENGINE=InnoDB' at line 8 mysql>

Answer 1

If you define a default value then do it after allowing NULL or not

user_id smallint(6) NOT NULL DEFAULT 0

Also change this

PRIMARY KEY (id) NOT NULL,

to that

PRIMARY KEY (id)

complete statement:

 CREATE TABLE Poster 
 (
    id smallint(6) unsigned NOT NULL AUTO_INCREMENT,
    titre VARCHAR(200) NOT NULL,
    description text NOT NULL,
    image_link text NOT NULL,
    nb_commentaires int unsigned,
    nb_likes int unsigned,
    user_id smallint(6) NOT NULL DEFAULT 0,
    date_cree timestamp,
    PRIMARY KEY (id) 
 ) ENGINE=InnoDB;