ALTER TABLE /*_*/filearchive
  MODIFY COLUMN fa_minor_mime varbinary(100) default "unknown";

ALTER TABLE /*_*/image
  MODIFY COLUMN img_minor_mime varbinary(100) NOT NULL default "unknown";
  
ALTER TABLE /*_*/oldimage
  MODIFY COLUMN oi_minor_mime varbinary(100) NOT NULL default "unknown";
  
INSERT INTO /*_*/updatelog VALUES ('mime_minor_length');