id int(11) NOT NULL AUTO_INCREMENT,
PRIMARY KEY (id)
);
-ALTER TABLE core_group_member ADD COLUMN group_id int(11) default NULL;
+
+ALTER TABLE core_group_member ALTER COLUMN group_id group_id int(11) NOT NULL default 0;
+ALTER TABLE core_group_member ADD COLUMN group_id int(11) NOT NULL default 0;
ALTER TABLE core_group_member ADD COLUMN user_id int(11) NOT NULL default 0;
-ALTER TABLE ADD UNIQUE KEY `unique_group_user` (`group_id`,`user_id`);
+ALTER TABLE core_group_member ADD UNIQUE KEY `unique_group_user` (`group_id`,`user_id`);