create table exchange_links (

  id     int(11) NOT NULL auto_increment,

  code      text, 
  email     varchar(255), 
  back_link varchar(255), 

  website_url varchar(255), 
  name        varchar(255), 

  category        INT,
  quand           BIGINT, 

  state           CHAR(1), 
  last_checked    BIGINT, 
  check_result    CHAR(1), 
  attempts        INT, 

  dont_check      CHAR(1), 
  edit_key        CHAR(10), 

  PRIMARY KEY (id), 
  INDEX(category)

);

