+CREATE TABLE core_domain (
+ id int(11) NOT NULL auto_increment,
+ PRIMARY KEY (id)
+) ENGINE=innodb DEFAULT CHARSET=utf8 ;
+-- need to specify engine set, otherwise the unique index get's borked.
+
+ALTER TABLE core_domain ADD COLUMN domain VARCHAR(255) NOT NULL DEFAULT '';
+
+CREATE UNIQUE INDEX ui_domain ON core_domain (domain);
\ No newline at end of file