ALTER TABLE dwsurvey.t_question
CHANGE COLUMN qu_note qu_note TEXT NULL DEFAULT NULL ,
CHANGE COLUMN qu_title qu_title TEXT NULL DEFAULT NULL ;

ALTER TABLE dwsurvey.t_survey_detail
CHANGE COLUMN survey_note survey_note TEXT NULL DEFAULT NULL ;

ALTER TABLE dwsurvey.t_qu_radio
CHANGE COLUMN option_name option_name TEXT NULL DEFAULT NULL ;

ALTER TABLE dwsurvey.t_qu_checkbox
CHANGE COLUMN option_name option_name TEXT NULL DEFAULT NULL ;

ALTER TABLE dwsurvey.t_qu_score
CHANGE COLUMN option_name option_name TEXT NULL DEFAULT NULL ;

ALTER TABLE dwsurvey.t_qu_orderby
CHANGE COLUMN option_name option_name TEXT NULL DEFAULT NULL ;

ALTER TABLE dwsurvey.t_qu_chen_row
CHANGE COLUMN option_name option_name TEXT NULL DEFAULT NULL ;

ALTER TABLE dwsurvey.t_qu_chen_column
CHANGE COLUMN option_name option_name TEXT NULL DEFAULT NULL ;