ALTER TABLE `student_drop_out`   
  ADD COLUMN `textbook_fees` VARCHAR(20) NULL   COMMENT '教材费缴费情况' AFTER `status`,
  ADD COLUMN `homestay` VARCHAR(20) NULL   COMMENT '住宿费缴费情况' AFTER `textbook_fees`;


ALTER TABLE `base_personnel_labour_capital`   
  ADD COLUMN `category` INT NULL   COMMENT '类别(1:工资 2:社保)' AFTER `data_file`;

ALTER TABLE `base_personnel_labour_capital`   
  ADD COLUMN `year` INT NULL   COMMENT '社保年份' AFTER `category`;