alter table `user_info` MODIFY COLUMN `personal_profile` VARCHAR(1000) NULL COMMENT '个人简介' ; alter table `user_career` MODIFY COLUMN `experiences` VARCHAR(1000) NULL COMMENT '从业经历', MODIFY COLUMN `achievement` VARCHAR(1000) NULL COMMENT '主要成就'; alter table `organization_info` drop column `legal_person`; alter table `organization_info` MODIFY COLUMN `publicity_picture_url` VARCHAR(1000) NULL COMMENT '宣传图片'; alter table `organization_properties` MODIFY COLUMN `education_lab` int(5) NULL COMMENT '教育部重点实验室';