DELIMITER $$
USE `health`$$
DROP PROCEDURE IF EXISTS `repairDiseaseData`$$
CREATE DEFINER=`root`@`%` PROCEDURE `repairDiseaseData`()
BEGIN
      DECLARE Done INT DEFAULT 0;
      DECLARE isSeeDoctor INT;
	  DECLARE dId INT;
      DECLARE seeDoctorMsg LONGTEXT;
      DECLARE rs CURSOR FOR 
	  SELECT	id,	is_see_doctor,	see_doctor_msg
	  FROM	t_disease
	  WHERE
		(
		 (is_see_doctor = 0	OR is_see_doctor IS NULL)
			 AND see_doctor_msg IS NOT NULL AND see_doctor_msg != ''
		)
	  OR (is_see_doctor = 1	AND (see_doctor_msg IS NULL OR see_doctor_msg = ''));
      DECLARE CONTINUE HANDLER FOR SQLSTATE '02000' SET Done = 1;
      OPEN rs;  
	  FETCH NEXT FROM rs INTO dId, isSeeDoctor, seeDoctorMsg;     
      REPEAT
        IF NOT Done THEN
            IF seeDoctorMsg is null or seeDoctorMsg = ''
			THEN
                UPDATE t_disease SET is_see_doctor = 0 WHERE id = dId;
            ELSE               
                UPDATE t_disease SET is_see_doctor = 1 WHERE id = dId;
            END IF;
        END IF;
        FETCH NEXT FROM rs INTO dId, isSeeDoctor, seeDoctorMsg;   
      UNTIL Done END REPEAT;
	  CLOSE rs;
END$$
DELIMITER ;
CALL repairDiseaseData();